Manual For The 62913 30 Gal. 420cc Truck Bed Air Compressor EPA III

User Manual: Manual for the 62913 30 gal. 420cc Truck Bed Air Compressor EPA III 30 gal. 420cc Truck Bed Air Compressor EPA III

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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,

operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.

REV 15k

30 GAL gas powered two-stage
air compressor

Using a generator indoors CAN
KILL YOU IN MINUTES.
Generator exhaust contains
carbon monoxide. This is a poison
you cannot see or smell.

NEVER use inside
a home or garage,
EVEN IF doors and
windows are open.

Only use OUTSIDE
and far away from
windows, doors,
and vents.
Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com

ITEM 62913

When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2015 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.

Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Table of Contents
Safety ......................................................... 2

Maintenance .............................................. 14

Installation .................................................. 2

Parts List and Diagram .............................. 18

Specifications ............................................. 6

Warranty .................................................... 20

SAFETY

Operation ................................................... 10

INSTALLATION

WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

OpERATION

Addresses practices not related to personal injury.

MAINTENANCE
Page 2

For technical questions, please call 1-888-866-5797.

Item 62913

IMpORTANT SAFETY INFORMATION
WARNING Read all safety warnings and instructions.
Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The warnings, precautions, and instructions discussed in this instruction manual cannot cover all possible
conditions and situations that may occur. It must be understood by the operator that common sense
and caution are factors which cannot be built into this product, but must be supplied by the operator.

SAFETY

General Safety Warnings

1. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.

7. Set up and use only on a flat, level,
well-ventilated surface.

2. Do not operate the Compressor in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Gasolinepowered engines may ignite the dust or fumes.

8. Use only lubricants and fuel recommended
in the engine manual or in the
Specifications chart of this manual.

4. Gasoline fuel and fumes are flammable, and
potentially explosive. Use proper fuel storage
and handling procedures. Do not store fuel
or other flammable materials nearby.
5. Have multiple ABC class fire extinguishers nearby.
6. Operation of this equipment may create sparks
that can start fires around dry vegetation. A spark
arrestor may be required. The operator should
contact local fire agencies for laws or regulations
relating to fire prevention requirements.

10. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the equipment in unexpected situations.
11. Dress properly. Do not wear loose clothing or
jewelry. Keep hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.

OpERATION

3. Keep children and bystanders away
from an operating compressor.

9. Wear ANSI-approved safety glasses, hearing
protection, and NIOSH-approved dust mask/
respirator under a full face shield along
with steel-toed work boots during use.

INSTALLATION

Set Up precautions

Engine precautions
Follow engine precautions and instructions in the included engine instruction manual.

personal Safety

Item 62913

2. Use personal protective equipment.
Always wear ANSI-approved eye
protection during setup and use.
3. prevent unintentional starting.
Ensure the switch is in the off-position
before moving the compressor.

For technical questions, please call 1-888-866-5797.

MAINTENANCE

1. Stay alert, watch what you are doing and
use common sense when operating this
compressor. Do not use this compressor
while you are tired or under the influence
of drugs, alcohol or medication. A moment
of inattention while operating a compressor
may result in serious personal injury.

Page 3

Operating precautions
1.

SAFETY

CARBON MONOXIDE HAZARD
Using an engine indoors CAN KILL
YOU IN MINUTES.
Engine exhaust contains carbon
monoxide. This is a poison you cannot see or smell.

7. Secure the Compressor on transport vehicles to
prevent the tool from rolling, slipping, and tilting.
8. Use only accessories that are recommended
by Harbor Freight Tools for your model.
Accessories that may be suitable for one
piece of equipment may become hazardous
when used on another piece of equipment.
9. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
10. Do not cover the engine or
equipment during operation.

NEVER use inside a home or garage, EVEN IF
doors and windows are open.

INSTALLATION

Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.
3. Fire Hazard! Do not fill gas tank while Compressor
engine is running. Do not operate if gasoline has
been spilled. Clean spilled gasoline before starting
engine. Do not operate near pilot light or open flame.

OpERATION

4. Do not touch Compressor engine during
use. Let engine cool down after use.
a. Do not use the compressor if the switch
does not turn it on and off. Any compressor
that cannot be controlled with the switch
is dangerous and must be repaired.
b. Store an idle compressor out of the reach
of children and do not allow persons
unfamiliar with the compressor or these
instructions to operate it. A compressor is
dangerous in the hands of untrained users.
5. Never store fuel or other flammable
materials near the Compressor engine.

MAINTENANCE

6. Only use a suitable means of transport and
lifting devices with sufficient weight bearing
capacity when transporting the Compressor.

Page 4

11. Maintain the compressor. Keep the compressor
clean for better and safer performance. Follow
instructions for lubricating and changing
accessories. Keep dry, clean and free from
oil and grease. Check for misalignment or
binding of moving parts, breakage of parts
and any other condition that may affect the
compressor’s operation. If damaged, have the
compressor repaired before use. Many accidents
are caused by a poorly maintained compressor.
12. Use the compressor in accordance with these
instructions, taking into account the working
conditions and the work to be performed. Use of
the compressor for operations different from those
intended could result in a hazardous situation.
13. Do not operate the equipment with known
leaks in the engine’s fuel system.
14. When spills of fuel or oil occur, they must be
cleaned up immediately. Dispose of fluids and
cleaning materials as per any local, state, or
federal codes and regulations. Store oil rags in
a bottom-ventilated, covered, metal container.
15. Keep hands and feet away from moving parts. Do
not reach over or across equipment while operating.
16. Before use, check for misalignment or binding
of moving parts, breakage of parts, and any
other condition that may affect the equipment’s
operation. If damaged, have the equipment
serviced before using. Many accidents are
caused by poorly maintained equipment.
17. Use the correct equipment for the application.
Do not modify the equipment and do not use the
equipment for a purpose for which it is not intended.

For technical questions, please call 1-888-866-5797.

Item 62913

Service precautions

b. Allow the engine to completely cool.
c. Then, remove the spark plug
cap from the spark plug.
2. Keep all safety guards in place and in
proper working order. Safety guards include
muffler, air cleaner, mechanical guards,
and heat shields, among other guards.

5. Maintain labels and nameplates on
the equipment. These carry important
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. Store equipment out of the reach of children.
7. Follow scheduled engine and
equipment maintenance.

INSTALLATION

3. Do not alter or adjust any part of the
equipment or its engine that is sealed by the
manufacturer or distributor. Only a qualified
service technician may adjust parts that may
increase or decrease governed engine speed.

Air Compressor Safety Warnings
1. Risk of fire or explosion - do not spray
flammable liquid in a confined area or towards a
hot surface. Spray area must be well-ventilated.
Do not smoke while spraying or spray where
spark or flame is present. Arcing parts - keep
compressor at least 20 feet away from explosive
vapors, such as when spraying with a spray gun.

12. The use of accessories or attachments not
recommended by the manufacturer may
result in a risk of injury to persons.

2. Risk of bursting - do not adjust regulator higher
than marked maximum pressure of attachment.

14. Industrial applications must follow OSHA guidelines.

13. All air line components, including hoses, pipe,
connectors, filters, etc., must be rated for a minimum
working pressure of 150 PSI, or 150% of the
maximum system pressure, whichever is greater.

4. Do not use to supply breathing air.

15. Maintain labels and nameplates on the
compressor. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.

5. Keep compressor well-ventilated.
Do not cover compressor during use.

16. This product is not a toy.
Keep it out of reach of children.

6. Add correct amount of compressor oil before
first use and every use. Operating with the
incorrect amount of oil causes permanent
damage and voids warranty. To prevent
damage, do not use with overfilled or low oil.

17. People with pacemakers should consult their
physician(s) before use. Electromagnetic
fields in close proximity to heart pacemaker
could cause pacemaker interference or
pacemaker failure. Caution is necessary when
near the engine’s magneto or recoil starter.

3. Risk of injury - do not direct air
stream at people or animals.

7. Drain Tank daily and after use. Internal rust causes
tank failure and explosion.
8. Do not remove the valve cover or
adjust internal components.
9. Compressor head gets hot during operation.
Do not touch it or allow children nearby
during or immediately following operation.
10. Do not use the air hose to move the compressor.
11. Release the pressure in the
storage tank before moving.

18. WARNING: The brass components of this product
contain lead, a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
19. WARNING: The cord of this product contains
lead and/or di (2-ethylhexyl) phthalate (DEHP),
chemicals known to the State of California
to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
(California Health & Safety Code § 25249.5, et seq.)

SAVE THESE INSTRUCTIONS.
Item 62913

For technical questions, please call 1-888-866-5797.

Page 5

OpERATION

a. Turn the engine switch to its “OFF” position.

4. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and dust
mask/respirator during service.

MAINTENANCE

1. Before service, maintenance, or cleaning:

SAFETY

Have your compressor serviced by a qualified repair person using only identical
replacement parts. This will ensure that the safety of the compressor is maintained.

Grounding

SAFETY

TO pREVENT ELECTRIC SHOCK AND DEATH
FROM INCORRECT GROUNDING WIRE CONNECTION:
Check with a qualified electrician if you are in doubt as to whether the is properly grounded. Do
not use the compressor if the power cord is damaged. If damaged, have it repaired by a service
facility before use.

Symbology
pSI

Pounds per square inch of pressure

INSTALLATION

CFM

Cubic Feet per Minute flow

SCFM

Cubic Feet per Minute flow
at standard conditions

NpT

National pipe thread, tapered

NpS

National pipe thread, straight

RpM
Hp

Revolutions Per Minute
Horsepower
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
WARNING marking concerning
Risk of Respiratory Injury.
Operate engine OUTSIDE and far
away from windows, doors, and vents.
WARNING marking concerning
Risk of Explosion.

Specifications

OpERATION

Pump

Two stage

Air Outlet Size

1/2″ -18 NPT

Air Pressure

Shut-off 180 PSI
Restart 140 PSI

Air Tank Capacity

30 Gallons

Air Flow Capacity

18 SCFM @ 90 PSI
19.5 SCFM @ 40 PSI

Oil Capacity

57 oz. (1.7L)

Oil Type

SAE 30 non-detergent
Air Compressor Oil

Required Rotation
viewed from PTO

Clockwise

(power takeoff - the output shaft)

Required Engine
Idle Speed

2000 RPM ± 100 RPM

Note: Engine specifications are found in the engine manual supplied with this equipment.

MAINTENANCE
Page 6

For technical questions, please call 1-888-866-5797.

Item 62913

Installation
Read the ENTIRE IMpORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.

SAFETY

The emission control system for this Compressor’s Engine is warranted for standards set
by the U.S. Environmental Protection Agency and by the California Air Resources Board
(also known as CARB). For warranty information, refer to the engine manual.
Note: For additional information regarding the parts listed in the following pages,
refer to the Assembly Diagram near the end of this manual.

Functions
Belt Guard Frame (93) &
Belt Guard Cover (97)

pilot Valve

pump Safety Valve (6)

INSTALLATION

Muffler
Assembly (8)

ON/OFF
Switch

Oil Sight
Glass (41)

Tank
pressure
Gauge (76)

Air Outlet (65)

Drain Valve (67)
Tank Safety Valve (75)

2. Oil Sight Glass - The oil sight glass shows proper level of
the oil. Oil level should be at center of Sight Glass.
3. Tank Drain Valve - The Air Tank Drain Valve allows moisture
to be removed from the tank to prevent corrosion.
4. Safety Valve - The Safety Valve automatically releases air if the Air
Tank pressure exceeds the preset maximum. In an emergency, the
ring can be pulled to relieve tank air pressure. There is one
safety valve on the pump and one on the tank.

OIL LEVEL

Oil Sight Glass (41)

OpERATION

Crankcase (44)

1. Belt Guard - The Belt Guard encloses the pulleys and drive belts.
It protects the user from the moving parts and allows the
large pulley to direct cooling air to the Air Pump.

OVERFILL
FULL

LOW

6. Air Storage Tank - The Air Tank is where air
pressurized by the Air Pump is stored for use.
7. Tank pressure Gauge - The Air Tank Pressure
Gauge displays the air pressure in the tank.

Opened
Pilot Valve

8. pilot Valve - Open the Pilot Valve before starting the engine.
It relieves resistance on the engine to make starting possible.
Rotate the pin so it is vertical to open it. Once the engine is running, Closed
Pilot Valve
close the Pilot Valve so the Compressor can build up pressure.

Item 62913

For technical questions, please call 1-888-866-5797.

Page 7

MAINTENANCE

5. Air Outlet - An air hose attaches to this valve. Air pressure required by
tools is set by an air pressure regulator.

Mounting to a Truck Bed
1. Before mounting, if needed, reinforce the area with plywood or steel plating.

SAFETY

2. With assistance, move the compressor to the truck bed location and mark the floor of the truck
bed through the holes in the compressor’s feet. Check for any hidden wiring or cables and
adjust the location for the holes as needed. Then, temporarily set the compressor aside.
3. Drill the four 1/2″ diameter holes through the truck bed and any reinforcing materials.
4. Set the compressor back in place, and align the foot holes with the pre-drilled holes. Use four 1/2″
diameter, bolts, washers and lock washers (all not included) to secure the compressor in place.
First Stage
Cylinder Head (5)

Connector

Wing Nut

Assembly
INSTALLATION

To install the Muffler Assembly (8), fit the Connector into
the Muffler Assembly and slide the assembly into the
hole on the side of the First Stage Cylinder Head (5).
Secure in place with the Wing Nut.

Muffler
Assembly (8)

Breaking in the Compressor
1. Turn the Engine off.
Insert a male coupler (sold separately) into the female Quick Coupler and fully open all regulators and valves.
2. Check all fluid levels in the engine and pump.

OpERATION

3. Start the engine following the General Operating Instructions.
4. Let the unit run for 30 minutes. Air will expel freely through the Coupler.
5. Turn the Engine OFF.
6. Remove the male coupler.

Air Connection Setup
1. Connect a regulator valve, an inline shut off valve and a 1/4″ NPT air hose to the
Quick Coupler (all sold separately). The air hose must be long enough to reach the
work area with enough extra length to allow free movement while working.
Note: An in-line shutoff ball valve is an important safety device because it controls the air supply even
if the air hose is ruptured. The shutoff valve should be a ball valve because it can be closed quickly.

MAINTENANCE

2. Depending on the tool that will be used with this compressor, incorporate additional components, such as
an in-line oiler, a filter, or a dryer (all sold separately), as shown on Figure A on page 9. Consult air
tool’s manual for needed accessories. See Typical Air Line Setup charts on the following pages.
This is a truckbed compressor, so use the portable setup as a model.

Page 8

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Item 62913

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Page 9

OpERATION

Description

Air Hose
Filter
Regulator
Lubricator (optional)
Coupler and Plug
Leader Hose (optional)
Air Cleaner / Dryer (optional)
Air Adjusting Valve (optional)

MAINTENANCE

A
B
C
D
E
F
G
H

Non-lubricated
Tools

Lubricated
Tools

Function

INSTALLATION

SAFETY

Connects air to tool
Prevents dirt and condensation from damaging tool or workpiece
Adjusts air pressure to tool
For air tool lubrication
Provides quick connection and release
Increases coupler life
Prevents water vapor from damaging workpiece
For fine tuning airflow at tool

Figure A: portable Air Supply Setup

Operating Instructions
Read the ENTIRE IMpORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.

SAFETY

Using the Compressor
Inspect Compressor, engine, pump and equipment looking for damaged, loose, and missing parts
before set up and starting. If any problems are found, do not use equipment until fixed properly.
Note: At the beginning of the day’s first use of the Air Compressor, check for air leaks by applying soapy water to
connections while the Air Compressor is pumping and after pressure cut-out. Look for air bubbles. If air bubbles
are present at connections, tighten connections. Do not use the air compressor unless all connections are air tight.
The extra air leaking out will cause the compressor to operate too often, increasing wear on the compressor.

Before starting the Compressor:

INSTALLATION

a.
b.
c.
d.
e.

Follow the Set Up Instructions in the equipment manual to prepare the equipment.
Follow the Set Up Instructions in the Engine manual to prepare the engine.
Inspect all components of the setup. Make sure all nuts and bolts are tight.
Fill the Engine with the proper amount and type of both fuel and oil.
Fill the Compressor pump with compressor oil following
the Maintenance Instructions in this manual.

To Start and Use the Compressor

1. Close the Drain Valve (67) by turning the lever
up so that it is perpendicular to the valve.

OpERATION

2. Close the in-line Shutoff Valve between
the compressor and the air hose.

3. Open the Pilot Valve by rotating it to a vertical position.

MAINTENANCE

4. Open the Fuel Valve.

Page 10

For technical questions, please call 1-888-866-5797.

Item 62913

5. To start a cold engine, move the Choke to the START
(start/closed) position.
To restart a warm engine, leave the
Choke in the RUN position.

START

6. For MANUAL START

SAFETY

RUN

For ELECTRIC START

a. Turn the Engine Switch to ON.

Turn the Engine Switch to START.
Note: To prolong starter life, use short starting
cycles (5 seconds maximum). Then wait one
minute before attempting to start again.

OFF

START

ON
OFF

START

OpERATION

b. Grip the Starter Handle of the Engine loosely and
pull it slowly several times to allow the gasoline
to flow into the Engine’s carburetor. Then pull
the Starter Handle gently until resistance is felt.
Allow Cable to retract fully and then pull it quickly.
Repeat until the engine starts. Note: Do not let
the Starter Handle snap back against the engine.
Hold it as it recoils so it doesn’t hit the engine.

INSTALLATION

Note: If engine does not start, check engine oil. Engine
will not start with low or no engine oil.
7. Allow the Engine to run for several seconds.
Then, if the Choke lever is in the START position,
move the Choke Lever very slowly to its RUN position.

START

MAINTENANCE

Note: Moving the Choke Lever too fast could kill the engine.
RUN

8. Close the Pilot Valve by rotating it
to a horizontal position.

Item 62913

For technical questions, please call 1-888-866-5797.

Page 11

SAFETY

9. When the Gas Engine is started and running, the
compressor Pump starts compressing air into the Air
Tank. Open the in-line Shutoff Valve and adjust the
Pressure Regulator (sold separately) so that the air
output is enough to properly power the tool, but the
output will not exceed the tool’s maximum air pressure
at any time. Turn the knob clockwise to increase the
pressure and counterclockwise to decrease pressure.
Adjust the pressure gradually, while checking
the air output gauge to set the pressure.

IMpORTANT: Allow the engine to run for five minutes with no load
after each start-up so that the engine can stabilize.
Maintenance Break-in period:
Breaking-in the engine will help to ensure proper equipment and engine operation.
The maintenance break-in period will last about 20 hours of use. After this period, change the engine oil.

INSTALLATION

Under normal operating conditions, subsequent maintenance follows the schedule
explained in the MAINTENANCE AND SERVICING section.
Note: When maximum tank pressure is reached, the compressor automatically disengages, and the engine
RPM drops down to idle speed. The engine remains at idle until Air Tank pressure falls to a preset level.
The Gas Engine will then accelerate and air pressure once again begins to build up in the Air Tank.
Note: As long as the engine is running, the operation of the Air Compressor
is automatic, controlled by an internal pressure switch.
IMpORTANT: The internal pressure switch is not user adjustable; do not make changes to the
air pressure settings of the internal pressure switch. Any change to the automatic pressure
levels may cause excess pressure to accumulate, causing a hazardous situation.
Note: Depressurization - If it is necessary to quickly depressurize the Compressor, turn OFF the engine.
Then, pull on the ring on the tank Safety Valve to release stored air pressure.

OpERATION

10. Use the air tool as needed.

MAINTENANCE

11. After the job is complete, turn OFF the engine.
To stop the engine in an emergency, turn the Engine Switch off.

OFF

OFF
START

Under normal conditions, use the following procedure:
a. Turn the Engine Switch off.
b. Close the Fuel Valve.

Page 12

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Item 62913

12. Close the in-line Shutoff Valve.

SAFETY

13. Bleed air from the tool then disconnect the tool.

14. Open the Drain Valve at the bottom of the Tank,
to release any built-up moisture
and the internal tank pressure.

INSTALLATION

15. Clean, then store the Air Compressor inside a garage or another
area that provides protection from the elements..

OpERATION

Emergency Depressurization

MAINTENANCE

If it is necessary to quickly depressurize the Compressor, turn the Power Switch OFF.
Then, pull on the ring on the Safety Valve to quickly release stored air pressure.

Item 62913

For technical questions, please call 1-888-866-5797.

Page 13

Maintenance and Servicing
procedures not specifically explained in this manual must
be performed only by a qualified technician.

SAFETY

TO pREVENT SERIOUS INJURY FROM ACCIDENTAL OpERATION:
Turn the power Switch of the equipment to its “OFF” position, release tank air
pressure, wait for the engine to cool, and disconnect the spark plug cap before
performing any inspection, maintenance, or cleaning procedures.
TO pREVENT SERIOUS INJURY FROM COMpRESSOR FAILURE:
Do not use damaged equipment. If abnormal noise or vibration occurs,
have the problem corrected before further use.

Cleaning, Maintenance, and Lubrication
INSTALLATION

1. BEFORE EACH USE, inspect the general
condition of the air compressor. Check for:
• loose hardware,
• misalignment or binding of moving parts,

2. AFTER USE, wipe external surfaces of
the compressor with a clean cloth.
3.

• cracked or broken parts,

WARNING! If the supply cord of this
compressor is damaged, it must be replaced
only by a qualified service technician.

• damaged electrical wiring, and
• any other condition that may
affect its safe operation.

Compressor pump Oil Maintenance

OpERATION

Check oil periodically for clarity. Replace oil if it appears
milky or if debris is present, or every 6 months, or
100 hours of runtime, whichever comes first. In harsh
environments such as high heat or high humidity,
you will need to replace the oil more frequently.

Change the compressor oil after the first
hour of use to remove any debris.

MAINTENANCE
Page 14

For technical questions, please call 1-888-866-5797.

Item 62913

Adding Oil

OIL LEVEL

Oil Sight Glass (41)
OVERFILL
FULL

LOW

2. To add oil:
a. Remove the Oil Plug (46).

c. Replace the Oil Plug.
Cold Weather Operation
Premium quality 30-weight, non-detergent air
compressor oil (sold separately) is recommended
for use with this compressor. Start compressor in
heated area if outdoor temperatures drop below
32° F. If this is not practical, drain out the old
pump oil and use L-PAB100-150 Non-detergent
Air Compressor Oil in the pump crankcase instead
whenever the compressor’s temperature will fall
below 40°. Do not use multi-viscosity oil (such
as 10W-30), they leave carbon deposits on pump
components and lead to accelerated failure. Heavy
operation may require heavier viscosity oil.
3. If uncertain which oil to use for this compressor,
please call Harbor Freight Tools customer
service at 1-888-866-5797 for assistance.
WARNING! To prevent serious injury from burns:
Do not add or change the oil while
the compressor is in operation.
Allow the compressor to cool before replacing oil.

SAFETY

Crankcase (44)

b. Using a funnel to avoid spills, pour enough
oil into the pump Crankcase to reach
the “full” level in the Oil Sight Glass.

INSTALLATION

1. The oil level should be at the center of the “full” level
on the Oil Sight Glass, as shown above. Add oil as
needed to maintain this level. Do not let the oil level
go below the center dot (LOW as shown below) and
do not overfill the oil so that it is above the center dot
(OVERFILL as shown below) on the Oil Sight Glass.

Changing Oil
2. Remove the Oil Plug to allow air flow into the Pump.
3. Remove the Drain Plug, allowing the
oil to drain into the container.
4. When the oil is completely drained from
the Pump, replace the Drain Plug.

5. Fill the Pump with new compressor oil to
the FULL level on the Oil Sight Glass.

OpERATION

1. Place a container under the Drain Plug.

6. Replace and tighten the Oil Plug.
7. Discard the old oil according to local,
state and federal regulations.

Draining Moisture from the Tank

1. Turn the Power Switch of the compressor off.

2. Place a collection pan under the Moisture Drain.
3. Open the Moisture Drain two or three turns ONLY.
4. When all the pressure and moisture is released,
close the Moisture Drain.

MAINTENANCE

The Moisture Drain is located under the Tank.
It must be used daily to release all trapped air and
moisture from the Tank. Doing this will eliminate
condensation and prevent tank corrosion.

Air Filter Maintenance
Check the Air Filter weekly to see if it needs
replacement. If working in dirty environments,
you may need to replace the filter more
often. To replace the Air Filter:

2. Remove the Muffler Assembly.
3. Replace with a new Air Filter.
4. Secure in place with the Wing Nut.

1. Unthread the Wing Nut holding the
Muffler Assembly in place.

Item 62913

For technical questions, please call 1-888-866-5797.

Page 15

Adjusting Belt Tension
1. Remove the Belt Guard Cover (97) and set it aside.
Deflection
Distance

SAFETY
2. Press on the center of the longest span on each belt
with moderate finger pressure (4-4.5 lb.).
Then measure the deflection distance,
the distance that the belt moved.
The belt should deflect anywhere from 1/2″ to 1″.

3. If either belt deflects too much, tighten belts
by loosening the four Bolts (79) on the Bottom
Plate (85) and moving the engine away from the
other pulley slightly by turning the Nut (84) holding
the Threaded Rod (80). Secure engine mounting
bolts and retest tension. If either belt is too long to
be properly tensioned, both belts must be replaced.
4. If either belt deflects too little, loosen belts
by loosening the Bolts on the Bottom Plate and
moving the engine towards the other pulley slightly
by turning the Nut (84) on the Threaded Rod (80).
Secure engine mounting bolts and retest tension.
5. Before use, replace belt cover.

Engine Base

INSTALLATION

Threaded Rod
(80)

Engine
Mounting
Bolts
Bolts (79)

Bottom Plate (85)
Nut (84)

Maintenance Schedule
Following are general guidelines for
maintenance checks of the Air Compressor.

OpERATION

Note: The environment in which the compressor
is used, and the frequency of use will affect how
often you will need to check the Air Compressor
components and perform maintenance procedures.
Daily:
a. Make sure all nuts and bolts are tight.

Weekly:
a. Inspect Air Filter.
Monthly:
a. Inspect Safety Valve.
* To check for air leaks, apply soapy water to joints while
the Air Compressor is pressurized. Look for air bubbles.
** To clean the compressor surface, wipe with
a damp cloth, using a mild detergent or mild solvent.

b. Drain moisture from air tank.
c. Check for abnormal noise or vibration.
d. Check for air leaks.*
e. Wipe off any oil or dirt from the compressor.**

MAINTENANCE
Page 16

For technical questions, please call 1-888-866-5797.

Item 62913

Troubleshooting

Incorrect lubrication or
not enough lubrication.
Worn parts.

1. Poor air outlet seal.
2. Loose cylinder/cylinder head.
Severe air
leakage
3. Damaged valve or housing.
4. Dirty, worn or damaged valve.
1. Low engine idle.
Unit stalls

Excessive noise

Oil in the
discharge air

Low discharge
pressure

2.
3.
4.
1.

Severely clogged air filter.
Improper lubrication.
Defective pilot/unloader valve.
Loose drive pulley or flywheel.

2.
3.
4.
5.
6.
7.
1.

Misaligned pulleys.
Lack of oil in crankcase.
Worn connecting rod.
Worn wrist pin bushing.
Worn bearings.
Loose belts.
Wrong type of oil or lowquality oil.

2.
3.
4.
5.

Overheating.
Restricted intake air.
Worn piston rings.
Excessive moisture
in the tank.
1. Air leaks.

2. Leaking valves.

3. Restricted air intake.
4. Blown gaskets.
5. Slipping belts.

1. Lubricate using recommended oil or
grease according to directions.
2. Have qualified technician inspect internal
mechanism and replace parts as needed.
1. Tighten or re-attach using thread seal tape.
2. Tighten cylinder/cylinder head assembly.
If cylinder/cylinder head cannot tighten properly,
internal parts may be misaligned.
3. Replace damaged components.
4. Clean or replace valve assembly.
1. Qualified technician should increase idle to
2,000±100 RPM by adjusting pressure switch.
2. Replace air filter.
3. Check for proper oil level.
4. Replace pilot valve.
1. Loose pulleys are a common cause of
“knocking”. Tighten appropriate bolts.
2. Align pulleys with straightedge and secure in place.
3. Check for proper oil level.
4. Replace connecting rod.
5. Remove piston assembly and replace necessary parts.
6. Replace bearings and oil.
7. Check for proper belt tension.
1. Change oil. Check oil recommendations
under EQUIPMENT SET UP, Equipment
Oil Fill section of this manual.
2. See above Excessive Noise section.
3. Clean or replace air filter.
4. Replace piston rings.
5. Drain moisture from the tank daily.
1. Listen for escaping air. Apply soap solution
to all fittings and connections. Bubbles will
appear at points of leakage. Tighten or
replace leaking fittings or connections.
2. Remove head and inspect for valve breakage,
weak valves, scored valve plate, etc. Replace
defective parts and reassemble. Replace head
gasket each time the head is removed.
3. Clean or replace air filter element.
4. Replace and gaskets proven faulty on inspection.
5. Tighten Belts (See monthly maintenance.)

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Item 62913

For technical questions, please call 1-888-866-5797.

SAFETY

Tank already pressurized.

INSTALLATION

(Note: See engine
2.
manual for engine
specific issues.)
1.
Compressor
overheats
2.

Likely Solutions
COMPRESSOR SPECIFIC:
1. Open pilot valve before start procedure,
close after unit is running.
2. Turn engine on. Compressor will turn on as
needed when pressure reaches preset level.

OpERATION

possible Causes
COMPRESSOR SPECIFIC:
1. Pilot Valve closed.

MAINTENANCE

problem
Engine will
not start

Page 17

parts List and Diagram

parts List
SAFETY

part
1
2
3
4
5
6
7
8
8-1

INSTALLATION

8-2
8-3
8-4
8-5
8-6
8-7
9

OpERATION

10
10-1
10-2
10-3
10-4
10-5
10-6
10-7
10-8
11
12
13
14
15
16
17
18
19
20
21
22

Description
Exhaust Elbow
Spring Washer
Bolts M10×50
Tube
First Stage Cylinder
Head (Iron)
Safety Valve
T-Type Exhaust Tee
Muffler
Muffler Aluminium
Joint
Muffler Gasket
Muffler Seat
Air Filter
Muffler Cover
Flat Washer
Wing Nut M6
Cylinder Head
Sealing Gasket
Valve Plate Assembly
Bolt M5×12
Spring Washer
Lift Limiter
Exhaust Valve Piece
Valve Plate
Intake Valve Slice
Cylindrical Pin Ø3×8
Spring Sheet
Valve Plate Seal
Bolts M10×25
Spring Washer
Cylinder
Cylinder Seal
Piston Ring Ø90
Hole Circlip Ø20
Piston Pin Ø20×80
Piston (Aluminum)
Connecting Rod
(Oblique)
Connecting Rod
(Straight)
Tube

Qty

part

Description

Qty

part

Description

Qty

3
8
8
1

23
24

Bolts M8×50
Spring Washer
Second Stage
Cylinder Head
Cylinder Head Gasket
Valve Plate
Valve Plate
Aluminum Seal
Valves
Valve Plate Seal
Cylinder
Piston Ring
Hole Circlip
Piston (Iron)
Piston Pin
Connecting Rod
Bolts M6×20
Spring Washer
Small Square
Back Cover
Back Cover Gasket
Oil Sight Glass
Oil Sight Gasket
Drain Plug
Crankcase
Oil Plug Seal
Oil Plug
Bearing
Shaft Circlips Ø30
Shoulder Ring
Crankshaft
Woodruff Key
Bearing
Oil Seal
Front Cover Gasket
Front Cover
Breathing Gasket
Connecting Rod (Iron)
Breathing
Spring Washer
Bolt M8×25
Belt Pulley
Pulley Retaining Ring

4
4

63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87

Bolt M10×35
Exhaust Tube
Air Outlet
Tank
Drain Valve
Nut M10
Flat Washer
Bolt M10×35
Combination Valve
Elbow
Unloading Tube
Throttle Push Rod
Safety Valve
Tank Pressure Gauge
Copper Tee
Wiring Stake
Bolt M10×35
Threaded Rod
Tense Card
Flat Washer
Spring Washer
Nut M12
Bottom Plate
Socket Cap Screw
Gasoline Engine
Gasoline Engine
Pulley
Pulley Retainer Ring
Spring Washer
Bolt 3/8″×1-1/2
V-Belt
Belt Guard Frame
Flat Washer
Spring Washer
Bolt M8×20
Belt Guard Cover
Belt Guard Bracket
Bolt M6×16
Standard Spring
Washer
Flat Washer
Nut
Belt Guard Bracket

1
1
1
1
1
12
12
4
1
1
1
1
1
1
1
2
4
1
1
1
1
1
1
4
1

2
1
1
2
1
1
1
1
1
1
1
2
2
2
2
1
1
1
1
2
1
2
12
25
2
3
2
4
2
2
1
1
1

25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62

1
1
2
1
2
1
1
1
2
1
1
1
4
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6
6
1
1

88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103

1
1
1
1
2
1
13
13
13
1
1
1
1
1
1
1

MAINTENANCE

Record product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.
Page 18

For technical questions, please call 1-888-866-5797.

Item 62913

MAINTENANCE

OpERATION

INSTALLATION

SAFETY

Assembly Diagram

Item 62913

For technical questions, please call 1-888-866-5797.

Page 19

pLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

Limited 90 Day Warranty
Harbor Freight ToolsHarbor Freight ToolsHarbor Freight ToolsHarbor Freight ToolsHarbor Freight Tools Co.
makes every effort to assure that its products meet high quality and durability standards, and warrants to the
original purchaser that this product is free from defects in materials and workmanship for the period of 90 days
from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse,
negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper installation, normal
wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries to persons or property,
or for incidental, contingent, special or consequential damages arising from the use of our product. Some
states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation of
exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

3491 Mission Oaks Blvd. • pO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797

Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,

REV 17a

Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains carbon monoxide.
This is a poison you cannot see or smell.

NEVER use inside
a home or garage,
EVEN IF doors and
windows are open.

Only use OUTSIDE
and far away from
windows, doors,
and vents.

Visit our website at: http://www.harborfreight.com
Email our technical support at: predator@harborfreight.com
Email our engine support at: predator@harborfreight.com

Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Table of Contents
Specifications ............................................. 2
Safety ......................................................... 3
Setup .......................................................... 6
Operation .................................................... 9

Maintenance .............................................. 14
Troubleshooting ......................................... 18
Warranties ................................................. 20
Parts Lists and Diagrams .......................... 22

Specifications
Displacement
Engine Type
Cooling System
Type

Fuel

Capacity
Engine Oil

Type SAE

Capacity
Run Time @ 50% Load
with full tank
Sound Level at 3 feet
Bore x Stroke
Compression Ratio
Rotation viewed from PTO
(power takeoff - the output shaft)

Spark Plug
Valve Clearance
Speed
Shaft

420cc
Horizontal Single Cylinder
4-stroke
Forced air cooled
87+ octane stabilizer-treated
unleaded gasoline
1.25 Gallon
10W-30 above 32° F
5W30 at 32° F or below
1 Quart
3 hr.
92 dB
90 mm x 66 mm
8.1:1
Counterclockwise

Type

BOSCH® F7TC
Torch® F7TC

Gap
Intake
Exhaust
Idle

0.0275″ - 0.0314″
0.0039″ - 0.0059″
0.0039″ - 0.0059″
2000± 100 RPM

Shaft

Ø1″ x 3.48″

Keyway

1/4″x 3.48″

End Tapped

3/8″- 24UNF

The emissions control system for this Engine is warranted for standards set by the
U.S. Environmental Protection Agency and by the California Air Resources Board (also known as CARB).
For warranty information, refer to the last pages of this manual.

Page 2

For technical questions, please call 1-888-866-5797.

ITEM 62913

SAFETY

Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

Addresses practices not related to personal injury.

RpM
Hp

property or Statement
Revolutions Per Minute
Horsepower
WARNING marking concerning
Risk of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking concerning
Risk of Hearing Loss.
Wear hearing protection.

Symbol

property or Statement
WARNING marking concerning
Risk of Respiratory Injury.
Operate engine OUTSIDE and far away
from windows, doors, and vents.
WARNING marking concerning
Risk of Fire while handling fuel.
Do not smoke while handling fuel.
WARNING marking concerning
Risk of Fire.
Do not refuel while operating.
Keep flammable objects
away from engine.

OpERATION

Symbol

SETUp

Symbol Definitions

IMpORTANT SAFETY INSTRUCTIONS
WARNING! Read all instructions.
Failure to follow all instructions listed below may result in fire, serious injury and/or DEATH.
The warnings and precautions discussed in this manual cannot cover all possible conditions and
situations that may occur. It must be understood by the operator that common sense and caution
are factors which cannot be built into this product, but must be supplied by the operator.

MAINTENANCE

SAVE THESE INSTRUCTIONS

ITEM 62913

For technical questions, please call 1-888-866-5797.

Page 3

Set up precautions

SAFETY

1. Gasoline fuel and fumes are flammable, and
potentially explosive. Use proper fuel storage
and handling procedures. Do not store fuel
or other flammable materials nearby.

4. Set up and use only on a flat, level,
well-ventilated surface.

2. Have multiple ABC class fire extinguishers nearby.

6. Use only lubricants and fuel recommended
in the Specifications chart of this manual.

3. Operation of this equipment may create sparks that
can start fires around dry vegetation.
A spark arrestor may be required. The operator
should contact local fire agencies for laws or
regulations relating to fire prevention requirements.

5. Wear ANSI-approved safety goggles, heavy-duty
work gloves, and dust mask/respirator during set up.

Operating precautions
1.

CARBON MONOXIDE HAZARD
Using an engine indoors
CAN KILL YOU IN MINUTES.
Engine exhaust contains
carbon monoxide. This is a poison
you cannot see or smell.

10. Do not leave the engine unattended when it is
running. Turn off the engine (and remove safety
keys, if available) before leaving the work area.

SETUp

11. The engine can produce high noise levels.
Prolonged exposure to noise levels
above 85 dBA is hazardous to hearing.
Wear ear protection when operating the engine
or when working nearby while it is operating.
12. Wear ANSI-approved safety glasses
and hearing protection during use.

NEVER use inside a home or garage,
EVEN IF doors and windows are open.

13. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to a heart pacemaker could cause
pacemaker interference or pacemaker failure.
Caution is necessary when near the
engine’s magneto or recoil starter.

OpERATION

14. Use only accessories that are recommended
by Harbor Freight Tools for your model.
Accessories that may be suitable for one
piece of equipment may become hazardous
when used on another piece of equipment.
Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.
3. Keep all spectators at least six feet
from the Engine during operation.
4. Fire Hazard! Do not fill fuel tank while engine is
running. Do not operate if gasoline has been spilled.
Clean spilled gasoline before starting engine.
Do not operate near pilot light or open flame.

MAINTENANCE

5. Do not touch engine during use.
Let engine cool down after use.
6. Never store fuel or other flammable
materials near the engine.
7. Only use a suitable means of transport and
lifting devices with sufficient weight bearing
capacity when transporting the engine.
8. Secure the engine on transport vehicles to
prevent it from rolling, slipping, and tilting.
9. Industrial applications must follow
OSHA requirements.
Page 4

15. Do not operate in explosive atmospheres,
such as in the presence of flammable
liquids, gases, or dust. Gasoline-powered
engines may ignite the dust or fumes.
16. Stay alert, watch what you are doing and use
common sense when operating this engine.
Do not use while tired or under the influence
of drugs, alcohol or medication.
17. Dress properly. Do not wear loose clothing or
jewelry. Keep hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.
18. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
19. Do not cover the engine during operation.
20. Keep the engine and surrounding
area clean at all times.
21. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.

For technical questions, please call 1-888-866-5797.

ITEM 62913

22. Use the equipment, accessories, etc., in
accordance with these instructions and in the
manner intended for the particular type of
equipment, taking into account the working
conditions and the work to be performed.
Use of the equipment for operations different from
those intended could result in a hazardous situation.
23. Do not operate the equipment with known
leaks in the engine’s fuel system.
24. WARNING: This product contains or, when
used, produces a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)

25. When spills of fuel or oil occur, they must be
cleaned up immediately. Dispose of fluids and
cleaning materials as per any local, state, or
federal codes and regulations. Store oil rags in
a bottom-ventilated, covered, metal container.
26. Keep hands and feet away from moving parts.
Do not reach over or across
equipment while operating.

SAFETY

Operating precautions (cont.)

27. Before use, check for misalignment or binding of
moving parts, breakage of parts, and any other
condition that may affect the equipment’s operation.
If damaged, have the equipment serviced
before using. Many accidents are caused
by poorly maintained equipment.
28. Use the correct equipment for the application.
Do not modify the equipment and do not use the
equipment for a purpose for which it is not intended.

b. Allow the engine to completely cool.
c. Then, remove the spark plug cap
from the spark plug.
2. Keep all safety guards in place and in
proper working order. Safety guards include
muffler, air cleaner, mechanical guards,
and heat shields, among other guards.

1. Do not refill the fuel tank while the
engine is running or hot.
2. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
3. Do not fill fuel tank to the top.
Leave a little room for the fuel to expand as needed.
4. Refuel in a well-ventilated area only.

5. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.

4. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and
dust mask/respirator during service.

1. Servicing of batteries are to be performed or
supervised by personnel knowledgeable of
batteries and the required precautions. Keep
unauthorized personnel away from batteries.

5. Maintain labels and nameplates on the equipment.
These carry important information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
6. Have the equipment serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the equipment
is maintained. Do not attempt any service or
maintenance procedures not explained in this
manual or any procedures that you are uncertain
about your ability to perform safely or correctly.
7. Store equipment out of the reach of children.
8. Follow scheduled engine and
equipment maintenance.

OpERATION

a. Turn the engine switch to its “OFF” position.

Refueling:

Battery Service:

2. When replacing batteries, use the following
type batteries: 12 volt, 300 CCA, 36
Ah battery, sealed, lead-acid type
3. CAUTION – Do not dispose of battery or batteries
in a fire. The battery is capable of exploding.
4. CAUTION – Do not open or mutilate the battery.
Released electrolyte has been know to be
harmful to the skin and eyes and to be toxic.
5. CAUTION – A battery presents a risk of high
short circuit current. The following precautions
are to be observed when working on batteries:
a. Remove watches, rings, or other metal objects,
b. Use tools with insulated handles, and
c. Do not lay tools or metal parts on top of batteries.

SAVE THESE INSTRUCTIONS.
ITEM 62913

For technical questions, please call 1-888-866-5797.

Page 5

MAINTENANCE

1. Before service, maintenance, or cleaning:

SETUp

Service precautions

Set Up
Read the ENTIRE IMpORTANT SAFETY INFORMATION section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.

SAFETY

TO pREVENT SERIOUS INJURY:
Operate only with proper spark arrestor installed.
Operation of this equipment may create sparks that can start fires around dry vegetation.
A spark arrestor may be required.
The operator should contact local fire agencies for laws or regulations
relating to fire prevention requirements.
WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE.
WARNING! INSTALL THIS ENGINE ACCORDING TO EQUIpMENT INSTRUCTIONS BEFORE USE.
WARNING! If you do not connect a battery to the positive battery cable,
wrap its terminal securely with electrical tape (sold separately).

Battery Setup Instructions
SETUp

1. Place a fully charged, lead-acid 12 volt,
300 CCA, 36 Ah battery (not included) in
a stable, flat location near the engine.

4. Attach the negative cable to the
negative battery terminal.

2. Only use cables sized to match their length
according to the following chart:

Cable Gauge
(lower gauge numbers
mean thicker cables)

Maximum
Cable Length

(6)
(4)
(2)

5′
7′
12′

OpERATION

Motor Starter Assembly
Starting Relay

Connect Negative
Battery Cable to a
Mounting Bolt
5. Connect the negative cable securely to one
of the engine mounting bolts, as shown in
the diagram above. Connect cable securely
to prevent disconnection and short circuits.
6. Coat the terminals and cable ends with
a corrosion-preventive coating.

MAINTENANCE

3. Attach the positive cable from the positive
battery terminal to the Positive Terminal on
the starter solenoid (uncovered terminal),
shown above. Connect cable securely to
prevent disconnection and short circuits.

Page 6

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ITEM 62913

Components and Controls
Fuel Cap

SAFETY

Air Filter

Engine
Switch

Starter
Handle

SETUp

Muffler

Oil Drain plug

Dipstick

Choke
Starter

MAINTENANCE

Fuel Valve

OpERATION

Throttle

ITEM 62913

For technical questions, please call 1-888-866-5797.

Page 7

High Altitude Operation Above 3000 feet
WARNING! TO pREVENT SERIOUS INJURY FROM FIRE:
Follow instructions in a well-ventilated area away from ignition sources.
If the engine is hot from use, shut the engine off and wait for it to cool before proceeding. Do not smoke.

SAFETY

NOTICE: Warranty void if necessary adjustments are not made for high altitude use.
At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that control the fuel-air
ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude use and to prevent damage
to the engine and any other devices used with this product. The fuel system on this engine may be influenced by
operation at higher altitudes. Proper operation can be ensured by installing an altitude kit at altitudes higher than
3000 ft. above sea level. At elevations above 8000 ft, the engine may experience decreased performance, even
with the proper main jet. Operating this engine without the proper altitude kit installed may increase the engine’s
emissions and decrease fuel economy and performance. The kit should be installed by a qualified mechanic.
1. Turn off the engine.
2. Close the fuel valve.
3. Place a bowl under the fuel cup to catch any spilled fuel.
CAUTION! Carburetor bowl may have gas in it which will leak upon removing the bolt.
4. Unthread the bolt holding the fuel cup.

SETUp

5. Remove the bolt, Bolt Seal, fuel cup, Fuel Cup Seal and Main Jet from the body of the carburetor assembly.
A carburetor screwdriver (not included) is needed to remove and install the Main Jet.
Note: The mixing tube is held in place by the Main Jet and might fall out when it is removed.
If it falls out, replace it in the same orientation before replacing the Main Jet.
6. Replace the Main Jet with the replacement Main Jet needed for your altitude range (part 1a or 2a).
Note: The Fuel Cup Seal and Bolt Seal may be damaged during removal
and should be replaced with the new ones from the kit.
7. Replace the Fuel Cup Seal (4a), fuel cup, Bolt Seal (3a), and bolt. Tighten in place.
NOTICE: Do not cross thread bolt when tightening.
Finger tighten first and then use a wrench to make sure the bolt is properly threaded.
8. Wipe up any spilled fuel and allow excess to evaporate
before starting engine. To prevent FIRE, do not start the
engine while the smell of fuel hangs in the air.

OpERATION

Carburetor
Assembly

High Altitude Kit parts List - A
part
1a
2a
3a
4a

Description
Main Jet 3000-6000 ft.
Main Jet 6000-8000 ft.
Bolt Seal
Fuel Cup Seal

Qty
1
1
1
1

Fuel Cup Seal
Mixing Tube
(might remain
inside carburetor)

Main Jet

Fuel Cup

Bolt Seal

MAINTENANCE

Bolt

Page 8

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ITEM 62913

Operation
Read the ENTIRE IMpORTANT SAFETY INFORMATION section at the beginning of this manual
including all text under subheadings therein before set up or use of this product.

SAFETY

pre-Start Checks
Inspect engine and equipment looking for damaged, loose, and missing parts before set up and starting.
If any problems are found, do not use equipment until fixed properly.
Checking and Filling Engine Oil
NOTICE: Your Warranty is VOID if the engine’s
crankcase is not properly filled with oil before
each use. Before each use, check the oil level.
Engine will not start with low or no engine oil.
1. Make sure the engine is stopped and is level.

Full level

2. Close the Fuel Valve.
4. Reinsert the Dipstick without threading it in and
remove it to check the oil level. The oil level
should be up to the full level as shown above.
5. If the oil level is at or below the low mark add the
appropriate type of oil until the oil level is at the
proper level. SAE 10W-30 oil is recommended for
general use. (The SAE Viscosity Grade chart on
page 15 in the Maintenance section shows other
viscosities to use in different average temperatures.)

SETUp

3. Clean the top of the Dipstick and the area around it.
Remove the Dipstick by turning it counterclockwise,
and wipe it off with a clean, lint free rag.

6. Thread the dipstick back in clockwise.
NOTICE: Do not run the engine with too little oil.
Engine will shut off if engine oil level is too low.
WARNING! TO pREVENT SERIOUS
INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area
away from ignition sources. If the engine
is hot from use, shut the engine off and
wait for it to cool before adding fuel. Do not smoke.
1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. Remove the Strainer and remove any dirt
and debris. Then replace the Strainer.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol. Add fuel
stabilizer to the gasoline or the Warranty is VOID.

Note: Do not use gasoline that has been stored in a
metal fuel container or a dirty fuel container. It can
cause particles to enter the carburetor, affecting
engine performance and/or causing damage.
4. If needed, fill the Fuel Tank to about 1 inch under
the fill neck of the Fuel Tank with 87 octane or
higher unleaded gasoline that has been treated
with a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use.

OpERATION

Checking and Filling Fuel

5. Then replace the Fuel Cap.
6. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.

MAINTENANCE

Starting the Engine
Before Starting the Engine
Before starting the engine:
a. Follow the Set Up Instructions in the equipment manual to prepare the equipment.
b. Inspect the equipment and engine.
c. Fill the engine with the proper amount and type of
both stabilizer-treated unleaded gasoline and oil.
d. Read the Equipment Operation section in the equipment manual.

ITEM 62913

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Page 9

Manual Start

SAFETY

1. To start a cold engine, move the Choke to the
START position.
To restart a warm engine, leave the
Choke in the RUN position.

2. Open the Fuel Valve.

SETUp
3. Slide the Throttle or Speed Control Lever to 1/3
away from the SLOW position (the “turtle”).
Note: Some tools have a Speed Control Lever located
elsewhere on the tool which functions the same as
the Throttle. Use the Speed Control Lever in place
of the Throttle when the tool is so equipped.

OpERATION

ON
OFF

START

4. Turn the Engine Switch to START.

START

Note: If engine does not start, check engine oil level.
Engine will not start with low or no engine oil.

MAINTENANCE

5. Grip the Starter Handle of the Engine loosely and pull
it slowly several times to allow the gasoline to flow into
the Engine’s carburetor. Then pull the Starter Handle
gently until resistance is felt. Allow Cable to retract fully
and then pull it quickly. Repeat until the engine starts.

Note: Do not let the Starter Handle snap back against the engine.
Hold it as it recoils so it doesn't hit the engine.

Page 10

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ITEM 62913

6. Allow the Engine to run for several seconds.
Then, if the Choke lever is in the START position,
move the Choke Lever very slowly to its RUN position.

SAFETY

Note: Moving the Choke Lever too
fast could stall the engine.

IMpORTANT: Allow the engine to run at no load for five minutes
after each start-up so that the engine can stabilize.

MAINTENANCE

OpERATION

SETUp

7. Adjust the Throttle as needed.

ITEM 62913

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Page 11

Electric Start (if equipped)

SAFETY

1. To start a cold engine, move the Choke to the
START position.
To restart a warm engine, leave the
Choke in the RUN position.

2. Open the Fuel Valve.

OpERATION

ON
4. Turn the Engine Switch to START.

OFF

START

Note: If engine does not start, check engine oil level.
Engine will not start with low or no engine oil.

MAINTENANCE

5. Allow the Engine to run for several seconds.
Then, if the Choke lever is in the START position,
move the Choke Lever very slowly to its RUN position.

Note: Moving the Choke Lever too
fast could stall the engine.
IMpORTANT: Allow the engine to run at no load for five minutes with no
load after each start-up so that the engine can stabilize.
6. Adjust the Throttle as needed.
Page 12

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ITEM 62913

Break-in period:
a. Breaking-in the engine will help to ensure proper equipment and engine operation.
b. The operational break-in period will last about 3 hours of use. During this period:

SAFETY

• Do not apply a heavy load to the equipment.
• Do not operate the engine at its maximum speed.
c. The maintenance break-in period will last about 20 hours of use.
• Change the engine oil after this period.
Under normal operating conditions subsequent maintenance follows
the schedule explained in the MAINTENANCE section.

Stopping the Engine

OFF

SETUp

1. To stop the engine in an emergency,
turn the Engine Switch off.

2. Under normal conditions, use the following procedure:
a. Slide the Throttle or Speed Control
Lever to SLOW (the ″turtle”).
b. Turn the Engine Switch off.
c. Close the Fuel Valve.

NOTICE

MAINTENANCE

OpERATION

See Long-Term Storage on page 17
for complete storage instructions.

ITEM 62913

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Page 13

Maintenance

WARNING
SAFETY

TO pREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING:
Turn the power Switch of the equipment to its “OFF” position, wait for the engine to cool, and disconnect
the spark plug cap before performing any inspection, maintenance, or cleaning procedures.
TO pREVENT SERIOUS INJURY FROM EQUIpMENT FAILURE:
Do not use damaged equipment. If abnormal noise, vibration, or excess
smoking occurs, have the problem corrected before further use.
Follow all service instructions in this manual. The engine may fail critically if not serviced properly.
Many maintenance procedures, including any not detailed in this manual, will need to be performed
by a qualified technician for safety. If you have any doubts about your ability to safely service the
equipment or engine, have a qualified technician service the equipment instead.

Cleaning, Maintenance, and Lubrication Schedule
SETUp

Note: This maintenance schedule is intended solely as a general guide. If performance decreases or if
equipment operates unusually, check systems immediately. The maintenance needs of each piece of equipment
will differ depending on factors such as duty cycle, temperature, air quality, fuel quality, and other factors.
Note: The following procedures are in addition to the regular checks and maintenance
explained as part of the regular operation of the engine and equipment.
Before
Each Use

procedure

Monthly or
Every 3 mo. or Every 6 mo. or
every 20
50 hr. of use 100 hr. of use
hr. of use

Yearly or
every 300
hr. of use

Every
2 Years

Brush off outside of engine
Check engine oil level
Check air cleaner
Check sediment cup
Change engine oil

Clean air filter

OpERATION

Check and clean spark plug
1. Check/adjust idle speed
2. Check/adjust valve clearance
3. Clean fuel tank, strainer
and carburetor

4. Clean carbon build-up from
combustion chamber
Replace fuel line if necessary

**
**

*Service more frequently when used in dusty areas.
**These items should be serviced by a qualified technician.

MAINTENANCE
Page 14

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ITEM 62913

Checking and Filling Fuel

Engine Oil Change

WARNING! TO pREVENT SERIOUS
INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area
away from ignition sources. If the engine is
hot from use, shut the engine off and wait
for it to cool before adding fuel. Do not smoke.

CAUTION! Oil is very hot during operation and can
cause burns. Wait for engine to cool before changing oil.

3. Remove the Strainer and remove any dirt
and debris. Then replace the Strainer.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol. Add fuel
stabilizer to the gasoline or the Warranty is VOID.
Note: Do not use gasoline that has been stored in a
metal fuel container or a dirty fuel container. It can
cause particles to enter the carburetor, affecting
engine performance and/or causing damage.
4. If needed, fill the Fuel Tank to about 1 inch under
the fill neck of the Fuel Tank with 87 octane or
higher unleaded gasoline that has been treated
with a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use.
5. Then replace the Fuel Cap.
6. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
To prevent FIRE, do not start the engine
while the smell of fuel hangs in the air.

SAFETY

2. Unscrew and remove the Fuel Cap.

2. Close the Fuel Valve.
3. Place a drain pan (not included) underneath
the crankcase’s drain plug.
4. Remove the drain plug and, if possible,
tilt the crankcase slightly to help drain
the oil out. Recycle used oil.
5. Replace the drain plug and tighten it.
6. Clean the top of the Dipstick and the area around it.
Remove the Dipstick by turning it counterclockwise,
and wipe it off with a clean, lint free rag.

Full level

7. Add the appropriate type of oil until the oil level is at
the full level. SAE 10W-30 oil is recommended for
general use.
The SAE Viscosity Grade chart shows other
viscosities to use in different average temperatures.

SETUp

1. Clean the Fuel Cap and the area around it.

1. Make sure the engine is stopped and is level.

SAE Viscosity Grades

10W-30
5W-30
-20

100°F

Average outdoor temperature

OpERATION

8. Thread the dipstick back in clockwise.

MAINTENANCE

NOTICE: Do not run the engine with too little oil.
Engine will not start with low or no engine oil.

ITEM 62913

For technical questions, please call 1-888-866-5797.

Page 15

Air Filter Maintenance

Spark plug Maintenance

1. Remove the Air Cleaner Cover and the air filter(s)
and check for dirt. Clean as described below.
2. Cleaning:

SAFETY

• For paper filters:
To prevent injury from dust and debris,
wear ANSI-approved safety goggles,
NIOSH-approved dust mask/respirator, and
heavy-duty work gloves. In a well-ventilated
area away from bystanders, use pressurized
air to blow dust out of the filter.
• For foam filters:
Wash the filter in warm water and mild
detergent several times. Rinse. Squeeze out
excess water and allow it to dry completely.
Soak the filter in lightweight oil briefly,
then squeeze out the excess oil.
3. Install the cleaned filter(s). Secure the
Air Cleaner Cover before use.

Spark
plug
Cap

1. Disconnect spark plug cap from end of plug.
Clean out debris from around spark plug.
2. Using a spark plug wrench, remove the spark plug.
3. Inspect the spark plug:
If the electrode is oily, clean it using a clean, dry rag.
If the electrode has deposits on it, polish it using
emery paper. If the white insulator is cracked or
chipped, the spark plug needs to be replaced.

SETUp

Recommended Spark plugs
BOSCH®

F7TC

TORCH®

F7TC

NOTICE: Using an incorrect spark plug
may damage the engine.
4. When installing a new spark plug,
adjust the plug’s gap to the specification on the
Specifications chart. Do not pry against the
electrode, the spark plug can be damaged.
5. Install the new spark plug or
the cleaned spark plug into the engine.

OpERATION

• Gasket-style:
Finger-tighten until the gasket
contacts the cylinder head,
then tighten about 1/2-2/3 turn more.
• Non-gasket-style:
Finger-tighten until the plug
contacts the cylinder head,
then tighten about 1/16 turn more.
NOTICE: Tighten the spark plug properly.
If loose, the spark plug will cause the
engine to overheat.
If overtightened, the threads in the
engine block will be damaged.

MAINTENANCE

6. Apply dielectric spark plug boot protector
(not included) to the end of the spark plug
and reattach the cap securely.

Page 16

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ITEM 62913

When the equipment is to remain idle for longer than
20 days, prepare the Engine for storage as follows:

c. Replace spark plug, but leave
spark plug cap disconnected.

1. CLEANING:
Wait for Engine to cool, then clean Engine with
dry cloth. NOTICE: Do not clean using water.
The water will gradually enter the Engine
and cause rust damage. Apply a thin coat
of rust preventive oil to all metal parts.

d. Pull Starter Handle to distribute oil in cylinder.
Stop after one or two revolutions when you
feel the piston start the compression stroke
(when you start to feel resistance).

To protect the fuel tank during storage, fill the
tank with gasoline that has been treated with
a fuel stabilizer additive. Follow fuel stabilizer
manufacturer’s recommendations for use. Refer
to Checking and Filling Fuel on page 15.
WARNING! TO pREVENT SERIOUS
INJURY FROM FIRE:
Fill tank in a well-ventilated area away from
ignition sources. If the engine is hot from
use, shut the engine off and wait for it to
cool before adding fuel. Do not smoke.
3. LUBRICATION:
a. Change engine oil.

NOTICE: During extended storage periods the
Engine must be started every 3 months and allowed
to run for 15 – 20 minutes or the Warranty is VOID.
6. AFTER STORAGE:
Before starting the Engine during or after
storage, keep in mind that untreated gasoline
will deteriorate quickly. Drain the fuel
tank and change to fresh fuel if untreated
gasoline has been sitting for a month, if
treated gasoline has been sitting beyond the
fuel stabilizer’s recommended time period,
or if the Engine does not start.

MAINTENANCE

OpERATION

b. Clean out area around spark plug.
Remove spark plug and pour one tablespoon of
engine oil into cylinder through spark plug hole.

5. STORAGE AREA:
Cover and store in a dry, level, well-ventilated
area out of reach of children. Storage area should
also be away from ignition sources, such as
water heaters, clothes dryers, and furnaces.

SETUp

2. FUEL:

4. BATTERY:
Disconnect battery cables (if equipped).
Recharge batteries monthly while in storage.

SAFETY

Long-Term Storage

ITEM 62913

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Page 17

Troubleshooting
problem

possible Causes

Engine will not start FUEL RELATED:

probable Solutions
FUEL RELATED:

SAFETY
SETUp
OpERATION
MAINTENANCE

1. No fuel in tank or fuel valve closed.

1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline and open fuel
valve.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

2. Choke not in START position, cold engine.

2. Move Choke to START position.

3. Gasoline with more than 10% ethanol used.
(E15, E20, E85, etc.)

3. Clean out ethanol rich gasoline from fuel
system. Replace components damaged by
ethanol. Use fresh 87+ octane stabilizertreated unleaded gasoline only.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

4. Low quality or deteriorated, old gasoline.

4. Use fresh 87+ octane stabilizer-treated
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

5. Carburetor not primed.

5. Pull on Starter Handle to prime.

6. Dirty fuel passageways.

6. Clean out passageways using fuel additive.
Heavy deposits may require further cleaning.

7. Carburetor needle stuck.
Fuel can be smelled in the air.

7. Gently tap side of carburetor float
chamber with screwdriver handle.

8. Too much fuel in chamber. This can be caused
by the carburetor needle sticking.

8. Turn Choke to RUN position. Remove
spark plug and pull the start handle several
times to air out the chamber. Reinstall
spark plug and set Choke to START position.

9. Clogged Fuel Filter.

9. Replace Fuel Filter.

IGNITION (SPARK) RELATED:

1. Spark plug cap not connected securely.

1. Connect spark plug cap properly.

2. Spark plug electrode wet or dirty.

2. Clean spark plug.

3. Incorrect spark plug gap.

3. Correct spark plug gap.

4. Spark plug cap broken.

4. Replace spark plug cap.

5. Circuit breaker tripped.

5. Reset circuit breaker. Check wiring and
starter motor if breaker continues to trip.

6. Incorrect spark timing or faulty ignition system.

6. Have qualified technician diagnose/
repair ignition system.

COMPRESSION RELATED:

1. Cylinder not lubricated.
Problem after long storage periods.

1. Pour tablespoon of oil into spark plug
hole. Crank engine a few times
and try to start again.

2. Loose or broken spark plug.
(Hissing noise will occur
when trying to start.)

2. Tighten spark plug.
If that does not work, replace spark plug.
If problem persists, may have head
gasket problem, see #3.

3. Loose cylinder head or damaged head gasket.
(Hissing noise will occur when trying to start.)

3. Tighten head.
If that does not remedy problem,
replace head gasket.

4. Engine valves or tappets mis-adjusted or stuck.

4. Have qualified technician adjust/
repair valves and tappets.

ENGINE OIL RELATED:

1. Low engine oil.

1. Fill engine oil to proper level.
Check engine oil before EVERY use.

2. Engine mounted on slope,
triggering low oil shutdown.

2. Operate engine on level surface.
Check engine oil level.

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

Page 18

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ITEM 62913

probable Solutions
1. Check cap and wire connections.

2. Incorrect spark plug gap or
damaged spark plug.

2. Re-gap or replace spark plug.

3. Defective spark plug cap.

3. Replace spark plug cap.

4. Old or low quality gasoline.

4. Use only fresh 87+ octane stabilizer-treated
unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

5. Incorrect compression.

5. Diagnose and repair compression.
(Use Engine will not start:
COMpRESSION RELATED section.)

1. Fuel tank empty or full of impure or low quality
gasoline.

1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

2. Low oil shutdown.

2. Fill engine oil to proper level.
Check engine oil before EVERY use.

3. Defective fuel tank cap creating vacuum,
preventing proper fuel flow.

3. Test/replace fuel tank cap.

4. Faulty magneto.

4. Have qualified technician service magneto.

5. Disconnected or improperly
connected spark plug cap.

5. Secure spark plug cap.

Engine stops when
under heavy load

1. Dirty air filter

1. Clean element.

2. Engine running cold.

2. Allow engine to warm up prior
to operating equipment.

Engine knocks

1. Old or low quality gasoline.

1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

2. Engine overloaded.

2. Do not exceed equipment’s load rating.

3. Incorrect spark timing, deposit buildup,
worn engine, or other mechanical problems.

3. Have qualified technician diagnose
and service engine.

1. Impure or low quality gasoline.

1. Fill fuel tank with fresh 87+ octane stabilizertreated unleaded gasoline.
Do not use gasoline with more than
10% ethanol (E15, E20, E85, etc.).

2. Engine too cold.

2. Use cold weather fuel and oil additives
to prevent backfiring.

3. Intake valve stuck or overheated engine.

3. Have qualified technician diagnose
and service engine.

4. Incorrect timing.

4. Check engine timing.

Engine stops
suddenly

Engine backfires

SETUp

1. Spark plug cap loose.

Shaft key or other shear pin
broken by impact to disconnect
engine and limit damage.

Have qualified technician check and replace
broken shaft key or other shear pins.

After sudden
impact, engine will
run, but equipment
will not operate

Shaft key or other shear pin
broken by impact to disconnect
engine and limit damage.

Have qualified technician check and replace
broken shaft key or other shear pins.

MAINTENANCE

After sudden
impact, engine will
run, but equipment
will not operate

Follow all safety precautions whenever diagnosing or servicing the equipment or engine.

ITEM 62913

For technical questions, please call 1-888-866-5797.

SAFETY

Engine misfires

possible Causes

OpERATION

problem

Page 19

Warranties

Limited 90 Day Warranty (Retail)
SAFETY

Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries
to persons or property, or for incidental, contingent, special or consequential damages arising from the use of
our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY
AND FITNESS, EXCEPT FOR THE EMISSIONS CONTROL SYSTEM WARRANTY BELOW.

SETUp

To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid.
Proof of purchase date and an explanation of the complaint must accompany the merchandise. If our
inspection verifies the defect, we will either repair or replace the product at our election or we may elect to
refund the purchase price if we cannot readily and quickly provide you with a replacement. We will return
repaired products at our expense, but if we determine there is no defect, or that the defect resulted from
causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

Emissions Control System Warranty
The California Air Resources Board and Harbor Freight Tools (HFT) are pleased to explain the emissions
control system warranty on your 2017 Small Off-Road Engine. In California, new equipment that uses small offroad engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards. HFT must
warrant that the emissions control system on your engine will be free from defects in material and workmanship
for two (2) years, provided there has been no abuse, neglect, or improper maintenance of your engine. HFT also
warrants that the emissions control system on your engine is designed, built, and equipped so that it conforms to the
United States Environmental Protection Agency’s (EPA) emissions requirements in effect at the time of manufacture.

OpERATION

Your emissions control system may include parts such as the carburetor or fuel-injection system, the ignition
system, catalytic converter, fuel lines, fuel caps, valves, canisters, vapor hoses, clamps, connectors, and other
emissions-related assemblies.
Where a warrantable condition exists, HFT will repair or replace, at our option, your engine if at no cost to you,
including diagnosis, parts and labor.

MANUFACTURER’S WARRANTY COVERAGE
This emissions control system is warranted for two years. If any emission-related part on your engine is
defective, the part will be repaired or replaced by HFT.

OWNER’S WARRANTY RESpONSIBILITIES
As the engine owner, you are responsible for the performance of the required maintenance listed in your
Owner’s Manual.

MAINTENANCE

As the engine owner, you should however be aware that HFT may deny you warranty coverage if your engine or
a part has failed due to abuse (including failure to follow the fuel use instructions contained in this manual), neglect,
improper maintenance, or unapproved modifications.
You are responsible for contacting HFT as soon as the problem exists in order to obtain warranty repair
or replacement, by doing either of the following: (a) contact HFT product support at 1-888-866-5797 or
predator@harborfreight.com; or (b) bring the to your nearest Harbor Freight Tools retail store. The nearest
Harbor Freight Tools retail store can be found on the internet at http://www.harborfreight.com. The warranty
repairs or replacement should be completed in a reasonable amount of time, not to exceed 30 days. If you have
a question regarding your warranty coverage, you should contact HFT product support at 1-888-866-5797 or
predator@harborfreight.com.

Page 20

For technical questions, please call 1-888-866-5797.

ITEM 62913

GENERAL EMISSIONS WARRANTY COVERAGE

d) Emission Warranty Parts List.
1. Fuel Metering System
a. Carburetor and its internal parts (and/or pressure
regulator or fuel injection system).
b. Fuel tank.
c. Cold start enrichment system.
d. Air/fuel ratio feedback and control system.
2. Air Induction System
a. Controlled hot air intake system.
b. Intake manifold.
c. Air filter.
3. Ignition System
a. Spark plugs.
b. Magneto ignition system.
c. Spark advance/retard system.

4. Catalyst System (if so equipped)
a. Exhaust pipe stud/exhaust manifold.
b. Thermal reactor.
c. Catalytic converter (if so equipped).
5. Particulate Controls
a. Traps, filters, precipitators, and any other device
used to capture particulate emissions.
6. Miscellaneous Items Used in Above Systems
a. Vacuum, temperature and time sensitive valves
and switches.
b. Hoses, belts, connectors, and assemblies.
7. Evaporative Emission Control System
a. Fuel tank.
b. Fuel caps, valves, canisters, filters, vapor hoses,
clamps, connectors, belts, and assemblies.

HFT provides with each product written instructions for the maintenance and use of the product by the owner

ITEM 62913

For technical questions, please call 1-888-866-5797.

Page 21

SETUp
OpERATION

c) The warranty on emissions-related parts is as follows:
1. Any warranted part that is not scheduled for replacement as required maintenance in the written instructions
provided, is warranted for the warranty period stated above. If any such part fails during the period of
warranty coverage, it will be repaired or replaced HFT. Any such part repaired or replaced under the
warranty will be warranted for the remaining warranty period.
2. Any warranted part that is scheduled only for regular inspection in the written instructions is warranted for
the warranty period stated above. A statement in the written instructions to the effect of “repair or replace
as necessary” does not reduce the period of warranty coverage. Any such part repaired or replaced under
warranty will be warranted for the remaining warranty period.
3. Any warranted part that is scheduled for replacement as required maintenance in the written instructions will
be warranted for the period of time prior to the first scheduled replacement point for that part. If the part fails
prior to the first scheduled replacement, the part will be repaired or replaced by HFT. Any such part repaired
or replaced under warranty will be warranted for the remainder of the period prior to the first scheduled
replacement point for the part.
4. Repair or replacement of any warranted part under the warranty will be performed at no charge to the owner
at a retail store or by HFT paying for shipping the product for repair.
5. Notwithstanding the provisions herein, warranty services or repairs will be provided at all retail stores or by
contacting HFT product support at 1-888-866-5797 or predator@harborfreight.com.
6. The owner will not be charged for diagnostic labor that leads to the determination that a warranted part is in
fact defective, provided that such diagnostic work is performed at a retail store.
7. HFT is liable for damages to other engine components proximately caused by a failure under warranty of any
warranted part.
8. Throughout the emissions warranty period stated above, HFT will maintain a supply of warranted parts
sufficient to meet the expected demand for such parts.
9. Any replacement part may be used in the performance of any warranty maintenance or repairs and will be
provided without charge to the owner. Such use will not reduce the warranty obligations of HFT.
10. Add-on or modified parts that are not approved by HFT may not be used. The use of any non-exempted addon or modified parts will be grounds for disallowing a warranty claim. HFT is not liable to warrant failures of
warranted parts caused by the use of a non-exempted add-on or modified part.

MAINTENANCE

b) HFT warrants to the initial owner and each subsequent owner that the engine is:
1. Designed, built, and equipped so as to conform with all applicable regulations adopted by the Air Resources
Board; and
2. Free from defects in materials and workmanship that causes the failure of a warranted part for a period of
two years.

SAFETY

a) The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser. The
warranty period is two years.

parts Lists and Diagrams

parts List
SAFETY

part

SETUp
OpERATION
MAINTENANCE

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

Page 22

Description
Flange Bolt
Cover Comp. Head
Head Cover Packing
Breather Tube
Flange Bolt, 10×80
Rotator Valve
Retainer Valve Spring
Locker Valve
Spring Valve
Seat Valve Spring
Seal Valve Stem
Exhaust Rocker Arm Ass’y.
Intake Rocker Arm Ass’y.
Locker
Valve Rocker Shaft
Stud Bolt
Spark Plug
Cylinder Head Comp
Gasket Cylinder
Dowel Pin
Valve Assy.
Push Rod
Lifter Valve
Drain Plug Bolt
Drain Plug Washer, 12Mm
Oil Seal Ø35×Ø52×7
Crankcase
Cable Cleat
Flange Bolt
Oil Level Switch
Flange Bolt, M6x12
Alert Unit Oil
Flange Bolt, M6x12
Piston Ring Set
Piston
Connecting Rod Ass’y
Piston Pin
Piston Pin Clip
Crankshaft Ass’y
Balancer Weight
Camshaft Ass’y
Ball Bearing 6202
Ball Bearing 6207
Dowel Pin Ø8×12
Governor Kit
Crankcase Cover Gasket
Crankcase Cover
Cap Ass’y
Flange Bolt 8X40
Shroud
Flange Bolt M6×12
Stud Bolt
Carburetor Packing
Carburetor Insulator
Insulator Packing
Carburetor Ass’y.

Qty.

part

6
1
1
1
4
2
2
4
2
1
1
1
1
4
2
2
1
1
1
2
1
2
2
2
2
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
2
1
2
1
1
1
2
7
1
1
2
1
1
1
1

57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
115
116
117
118

Description
Air Cleaner Packing
Flange Nut
Air Cleaner Ass’y
Air Cleaner Element Ass’y.
Cord Grommet
Stop Switch Holder
Ignition Coil Ass’y.
Flange Bolt
Flywheel Comp. (Sel-Lamp)
Fan Cooling
Starter Pulley
Nut Special, M16
Recoil Starter Comp.
Starter Ass’y.
Flange Bolt, M6x12
Oil Seal Ø8×Ø14×4
Governor Arm Shaft
Washer, 8×16×1.2
Lock Pin, 10mm
Control Ass’y.
Flange Bolt, M6×12
Cable Return Spring
Throttle Return Spring
Governor Rod
Governor Arm
Governor Arm Bolt
Flange Nut M6
Starter Motor
Bolt, Flange
Contactor Ass’y.
Bolt Washer
Charge Coil Ass’y.
Flange Bolt
Cord Clamper
Flange Bolt
Ex. Pipe Gasket
Nut 8mm
Ex. Pipe Comp.
Ex. Pipe Gasket
Muffler Ass’y.
Fuel Tank
Fuel Filler Cap Comp.
Fuel Tank Filter
Fuel Tank Gas Valve
Fuel Tank Joint Ass’y.
Rubber Washer
Flange Nut
Flange Bolt
Fuel Tube
Pipe Clip
Pipe
Pipe Clip
Key
Cable Tie
Cable Tie
Electric Starting Control Box

For technical questions, please call 1-888-866-5797.

Qty.
1
2
1
1
1
1
1
2
1
1
1
1
1
1
5
1
1
1
1
1
2
1
1
1
1
1
1
1
2
1
2
1
2
1
1
1
5
1
1
1
1
1
1
1
1
2
2
2
1
2
1
1
1
1
1
1

ITEM 62913

Record product’s Serial Number Here:
Note: If product has no serial number,
record month and year of purchase instead.
ITEM 62913

MAINTENANCE

OpERATION

SETUp

SAFETY

Assembly Diagram

Note: Some parts are listed and shown for
illustration purposes only, and are not available
individually as replacement parts.

For technical questions, please call 1-888-866-5797.

Page 23

3491 Mission Oaks Blvd. • pO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797

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Manual For The 62913 30 Gal. 420cc Truck Bed Air Compressor EPA III

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