Manual For The 69731 173 Cc OHV Vertical Shaft Gas Engine Certified California

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User Manual: Manual for the 69731 173 cc OHV Vertical Shaft Gas Engine - Certified for California 5.5 HP (173cc) OHV Vertical Shaft Gas Engine CARB

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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 16l

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

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© 2012 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
Specifications ............................................. 2

Maintenance .............................................. 13

Safety ......................................................... 3

Warranties ................................................. 20

Set Up......................................................... 7

Parts Lists and Diagrams .......................... 22

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

Specifications
Engine Type
Cooling System
Type

Fuel

Capacity
Type SAE

Engine Oil

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

Mounting Base Pattern
Shaft dia.
Keyway

Shaft

End Tapped

Type

Spark Plug

Valve Clearance
Speed

Page 2

Gap
Intake
Exhaust
Idle

Vertical Single Cylinder 4 stroke OHV
EPA phase III and CARB compliant
Forced air cooled
87+ octane stabilizer treated
unleaded gasoline
0.3 gallon (1.1 liter)
10W-30 above 32° F
5W30 at 32° F or below
0.6 Quart
40 minutes
104 dB
70 mm x 45 mm
173cc
8.5:1
Counterclockwise
8" (203mm); 3/8"-24 UNF tapped hole;
2 x 8.7mm through-hole
7/8″ x 3.16″
3/16″ (4.76 mm)
3/8″ - 24
NGK® BP-6ES/BPR6ES
DENSO®: W16EPR-U/W16EP-U
CHAMPION®: RN9YC4
NHSP®: F7TC/F7RTC
TORCH®: F7TC/F7RTC
0.027" - 0.031"
0.004" - 0.006"
0.006" - 0.008"
1,800 ± 50 RPM

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Item 69731

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.

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.

Symbol Definitions
Symbol

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.

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.

OpERATION

SETUp

Safety Warnings

Set up precautions
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.
Item 69731

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

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

Page 3

MAINTENANCE

SAVE THESE INSTRUCTIONS

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.

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

12. 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.
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.
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.

SETUp

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.
Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.

16. Stay alert, watch what you are doing and
use common sense when operating this
piece of equipment. Do not use this piece
of equipment while tired or under the
influence of drugs, alcohol or medication.

OpERATION

3. Keep all spectators at least six feet
from the Engine during operation.

17. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the equipment in unexpected situations.

4. Fire Hazard! Do not fill gas 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.

18. Use this equipment with both hands
only. Using equipment with only one hand
can easily result in loss of control.

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.

19. 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.
20. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
21. Do not cover the engine or
equipment during operation.

8. Secure the Engine on transport vehicles to
prevent the tool from rolling, slipping, and tilting.

22. Keep the equipment, engine, and
surrounding area clean at all times.

9. Industrial applications must follow
OSHA requirements.

23. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.

MAINTENANCE

10. Do not leave the equipment unattended when it is
running. Turn off the equipment (and remove safety
keys, if available) before leaving the work area.
11. Engine can produce high noise levels.
Prolonged exposure to noise levels above 85
dBA is hazardous to hearing. Always wear
ear protection when operating or working
around the gas engine while it is operating.

24. 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.
25. Do not operate the equipment with known
leaks in the engine’s fuel system.

Page 4

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Item 69731

27. 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.
28. Keep hands and feet away from moving
parts. Do not reach over or across
equipment while operating.

29. 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.
30. 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.
31. Follow equipment manufacturer’s
operation precautions.

SAFETY

26. 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.)

a. Release the brake handle,
stopping the engine.
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.
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.
4. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and dust
mask/respirator during service.
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.
THE ENGINE BRAKE IS FOR EMERGENCY
SHUTOFF; DO NOT REpLACE THE BRAKE
SpRING WITH A WEAKER SpRING.
7. Store equipment out of the reach of children.
8. Follow scheduled engine and
equipment maintenance.
Refueling:
1. Do not refill the fuel tank while the
engine is running or hot.

OpERATION

1. Before service, maintenance, or cleaning:

SETUp

Service precautions

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.

MAINTENANCE

SAVE THESE INSTRUCTIONS.

Item 69731

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Page 5

Engine Components
Fuel Cap

SAFETY
priming
Bulb

SETUp

Starter
Handle

Dipstick

Muffler

OpERATION

Air
Filter

Brake
Arm
Throttle

MAINTENANCE

XXXXXXXXXX

Serial
Number
Location
(Write on front
cover of manual.)

Page 6

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

Item 69731

Set Up

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.
The emission control system for this Generator’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 last pages of this manual.

SAFETY

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.

MAINTENANCE

OpERATION

SETUp

WARNING! DO NOT INSTALL THIS ENGINE ON A VEHICLE.
NOT FOR HIGHWAY USE. FOLLOW ALL AppLICABLE LAWS FOR INSTALLATION AND USE.

Item 69731

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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.

Carburetor
Assembly

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.

Fuel Cup Seal
Mixing Tube
(might remain
inside carburetor)

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.

Main Jet

6. Replace the Main Jet with the replacement Main Jet
needed for your altitude range (part 1a or 2a).

Fuel Cup

Note: The Fuel Cup Seal and Bolt Seal may be damaged during
removal and should be replaced with the new ones from the kit.

Bolt Seal

7. Replace the Fuel Cup Seal (4a), fuel cup,
Bolt Seal (3a), and bolt. Tighten in place.

OpERATION

NOTICE: Do not cross thread bolt when tightening.
Finger tighten first and then use a wrench to make sure the bolt is properly threaded.

Bolt

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.

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
2

MAINTENANCE
Page 8

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Item 69731

1. IMpORTANT: If you have any doubts about your
ability to perform the following procedures, have a
qualified service technician perform the installation.
2. Install this engine on a lawn mower only.
Do not use to power a vehicle.
3. Mounting hole locations:

a

6. Insert the mower’s brake cable sheath through the
hole in the Brake bracket. Secure the mower brake
cable to the brake arm. Adjust the brake cable
sheath to remove all slack and secure it in place
using the adjusting nuts on the cable sheath, as
shown in the illustration below.
THE ENGINE BRAKE IS FOR EMERGENCY
SHUTOFF; DO NOT REpLACE THE BRAKE
SpRING WITH A WEAKER SpRING.
If operating the engine brake is too
difficult, a qualified technician must install
a different brake handle on the mower.

SAFETY

Installation

Note: The brake cable on some mowers may
need to be adjusted in a different manner. Install
according to mower manufacturer’s instructions.

b
a. one 3/8 in. x 24 threaded; 1 in. deep
b. two Ø0.34 in. / 8.7mm unthreaded
(use 5/16 in. / 8mm diameter hardware)

Throttle
Control

4. Set the Engine upright on the mower,
and align at least three engine mounting
holes with mower mounting holes.

Throttle
Cable

NOTE: Depending on the mower, it may be necessary
to drill mounting holes or make a mounting plate
to align with the engine mounting holes. Only a
qualified technician should attempt these solutions.

Bracket
and
Bolt
7. Attach the end of the mower’s Throttle Cable to
the Throttle Control. Use the Bracket and Bolt
to secure its sheath in place as shown above.
8. Refer to the mower’s service manual for instructions
on how to properly attach a belt drive pulley, chain
drive gear, etc. onto the output shaft of the Engine.

MAINTENANCE

5. Use hardened, stainless steel Bolts, Lock Washers,
and Washers (not included) of appropriate length
and diameter to secure the Engine to the mower.
Make sure the hardware will not contact
moving parts during operation.

Brake
Cable
Bracket

OpERATION

Brake
Cable

SETUp

Brake
Arm

b

Item 69731

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Page 9

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

Checking and Filling Fuel

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.

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. Make sure the engine is stopped and is level.
2. Close the Fuel Valve.

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.

Full level

Full level

1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. 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.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol.

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.

OpERATION

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 6 in the Maintenance section shows other
viscosities to use in different average temperatures.)

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, effecting
engine performance and/or causing damage.
4. Then replace the Fuel Cap.
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.

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.

MAINTENANCE
Page 10

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Item 69731

Starting the Engine
Before Starting the Engine:

2. Adjust the Mower’s Throttle control to full throttle.

SETUp

1

2

OpERATION

1. Press the Priming Bulb 2-3 times to prime the engine.

SAFETY

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.
e. Move the mower to a location that is flat, level, and
free from loose objects (such as rocks or sticks).
The mower may be difficult to start on grass.

Note: Location, operation, and design of the Throttle
control will vary from manufacturer to manufacturer.

3

Item 69731

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MAINTENANCE

3. Hold the mower’s brake handle closed.

Page 11

4. Grip the Starter Handle of the Engine loosely and pull it
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.

4

SAFETY

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

5. Allow the Engine to run for several seconds.
Then, the Mower’s Throttle control can be
adjusted as desired for operation.

5

IMpORTANT: Allow the engine to run at
no load for a minute or two after each start-up
so that the engine can stabilize.

SETUp

6. 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:
• Do not apply a heavy load to the equipment.
c. The maintenance break-in period will last about 20 hours of use. After this period:
• Change the engine oil.
Under normal operating conditions subsequent maintenance follows the
schedule explained in the MAINTENANCE AND SERVICING section.

OpERATION

Stopping the Engine
To stop the engine, release the brake handle.

NOTICE
See Long-Term Storage chart
on page 16 for complete
storage instructions.

MAINTENANCE
Page 12

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Item 69731

Maintenance

WARNING
SAFETY

TO pREVENT SERIOUS INJURY FROM ACCIDENTAL STARTING:
Release the brake handle, 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.

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.
procedure

Before
Each Use

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

SETUp

Cleaning, Maintenance, and Lubrication Schedule

Every
2 Years

Brush off outside of engine
Check engine oil level
Check air cleaner
Check deposit cup

*

Clean/replace air cleaner
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

**

OpERATION

Change engine oil

**

MAINTENANCE

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

Item 69731

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Page 13

SAFETY

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.

1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. 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.
Note: Do not use gasoline containing more than
10% ethanol (E10). Do not use E85 ethanol.

SETUp

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, effecting
engine performance and/or causing damage.

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

Full level

4. Then replace the Fuel Cap.
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.

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.

SAE Viscosity Grades
30

OpERATION

10W-30
5W-30
-20

0

20

40

60

80

100°F

Average outdoor temperature
8. Thread the dipstick back in clockwise.
NOTICE: Do not run the engine with too little oil.
Engine will not start with low or no engine oil.

MAINTENANCE
Page 14

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Item 69731

Air Filter Element Maintenance

Spark plug Maintenance

1. Remove the air filter cover and the air filter elements
and check for dirt. Clean as described below.
2. Cleaning:
• For “paper” filter elements:
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 air filter.

3. Install the cleaned filter. Secure the
Air Cleaner Cover before use.

SAFETY

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.

Recommended Spark plugs
Brand

NGK®
NHSP® / TORCH®
DENSO®
CHAMPION®

plug
BP-6ES/BPR6ES
F7TC/F7RTC
W16EPR-U/W16EP-U
RN9YC4

SETUp

• For foam filter elements:
Wash the element 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.

Spark
plug
Cap

NOTICE: Using an incorrect spark
plug may damage the engine.

5. Install the new spark plug or the cleaned spark plug
into the engine.
Gasket-style: Finger-tighten until the gasket
contacts the cylinder head, then about 1/2-2/3 turn
more.
Non-gasket-style: Finger-tighten until the plug
contacts the head, then about 1/16 turn more.

OpERATION

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.

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 wire securely.

Item 69731

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

Page 15

Long-Term Storage

SAFETY

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

b. Remove the drain bolt from the bottom of the
carburetor bowl and allow the fuel to drain.

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.

c. After all fuel has drained, reinstall the
drain bolt. Tighten securely.

2. FUEL:
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 10.

SETUp

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.
a. Place a funnel leading to a proper gasoline
container below the carburetor.

3. LUBRICATION:
a. Change engine oil.
b. Clean out area around spark plug.
Remove spark plug and pour one tablespoon of
engine oil into cylinder through spark plug hole.
c. Replace spark plug, but leave
spark plug cap disconnected.
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).
4. 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.
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.

OpERATION

5. 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.
Drain plug

MAINTENANCE
Page 16

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

Item 69731

Troubleshooting
FUEL RELATED:
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:

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. Incorrect spark timing or faulty ignition system.

5. Have qualified technician diagnose/
repair ignition system.

COMPRESSION RELATED:

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:

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.

OpERATION

1. No fuel in tank or fuel valve closed.

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

Item 69731

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

SAFETY

Engine will not start FUEL RELATED:

probable Solutions

SETUp

possible Causes

MAINTENANCE

problem

Page 17

problem
Engine misfires

possible Causes

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.

SAFETY

1. Spark plug cap loose.

Engine stops
suddenly

SETUp
OpERATION

Engine backfires

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.

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

MAINTENANCE
Page 18

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

Item 69731

SAFETY
SETUp
OpERATION
MAINTENANCE
Item 69731

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

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 addition to the Retail Warranty above. In California, new
equipment that uses small off-road 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.
Your emissions control system may include parts such as the carburetor or fuel-injection system, the ignition
system, catalytic converter, fuel tanks, fuel lines, fuel caps, valves, canisters, vapor hoses, clamps, connectors, and
other emissions-related assemblies.

OpERATION

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.
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.

MAINTENANCE

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 69731

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 69731

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

pLEASE READ THE FOLLOWING CAREFULLY
SAFETY

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.

parts List

SETUp
OpERATION
MAINTENANCE

part

Description

Qty

part

Description

Qty

part

Description

Qty

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

Cover, Cylinder Head
Gasket, Cylinder Head
Head Sub., Cylinder
Gasket, Cylinder Head
Bolt
Plug, Spark
Bolt, Cylinder Head
Bracket, Muffler Shield
Bolt
Stud
Pin
Crankcase Sub.
Shield, Crankcase Side
Dipstick Sub., Oil
Bolt
Bolt
Bracket, Fuel Tank Right
Seal, Oil
Bolt
Bolt
Plate, Breather Cover
Gasket, Breather
Breather
Screen, Breather
Shield, Crankcase Rear
Bearing
Bracket, Fuel Tank Left
Bolt
Arm, Governor
Washer
Seal, Oil
Pin
Gasket, Crankcase
Pin
Washer
Block, Returning Oil

1
1
1
1
4
1
4
1
1
2
2
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1

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
63
64
65
66
67
68
69
70
71
72

Bolt
Plate, Governor Spindle
Seal, Oil
Bolt
Gear Asm, Governor
Cover, Crankcase
Ring, Primary
Ring, Secondary
Ring Set, Oil
Piston
Clip, Piston Pin
Pin, Piston
Rod, Connecting
Crankshaft Asm.
Nut, Valve Lock
Nut, Valve Adjusting
Seat, Valve Spring
Rocker, Valve
Spring, Valve
Guide, Seal
Bolt, Valve Adjusting
Valve, Intake
Plate Sub., Lifter Stopper
Lifter, Valve
Tappet, Valve
Camshaft Asm.
Valve, Exhaust
Starter Asm, Recoil
Housing, Engine
Shroud
Nut
Stud
Stud
Gasket, Insulator Plate
Plate, Carb. Insulator
Gasket, Carburetor

1
1
1
6
1
1
1
1
1
1
2
1
1
1
2
2
2
2
2
1
2
1
1
2
2
1
1
1
1
1
3
2
1
1
1
2

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

Gasket, Carb. Insulator
Carburetor Asm.
Gasket, Air Cleaner
Valve, Enrichment
Gasket, Air Cleaner
Tube, Breather
Nut
Case, Air Cleaner
Element, Air Cleaner
Cover, Air Cleaner Case
Cover, Muffler Outer
Muffler Asm.
Gasket, Exhaust Outlet
Nut
Strainer, Fuel
Clamp
Tube, Fuel
Clamp
Bolt
Tank Asm, Fuel
Nut, Flywheel
Flywheel Subassembly
Bolt
Coil, Ignition
Brake Asm.
Bolt
Bolt
Rod, Governor
Spring, Throttle Returning
Control Asm, Throttle
Bolt
Support Sub., Governor
Bolt, Governor Support
Nut
Spring, Governor
Clip

1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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 22

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

Item 69731

Assembly Diagram
67
67

SAFETY

67

65
66

68

68

93

99

69
64

94
98
97

20
20
21
19

15
16

91

22
23
24
25

17

15
13

92

SETUp

95

96

91

18

87

88 89

86

90

27
14
45

28
29 30 32
31

12

44
43

86

100

26

83

104

47
50

48

11

4

49
46
58

9

8
7

11

47
53

10

55

1

7

5

10

3

2
5

52

54

103

56

70 71

51
72

61

63
60

55

61

41

60
57

52

73 74
72

34

54
76

35

37
38
34

78

80

36

81

82

77
42

75

39
40

40
40

Item 69731

107

33

51

7

5
5

7

53

106

102

57 59

6

105

108

62

40

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

MAINTENANCE

85

OpERATION

101

84

79 79
40
40

Page 23

Mounting Hole Diagram
Note: Not to scale.

A
Ø8 in. / 203mm

6*Ø0.35 in. / 9mm
Ø0.24 in. / 6mm

3.27 in. / 83mm

A

Ø0.34 in. / 8.7mm

A-A
2:1

Ø1 in. / 25.4mm
Ø0.24 in.
/ 6mm

0.98 in. / 25mm

Ø0.34 in.
/ 8.7mm
3.94 in. / 100mm

3.85 in. / 97.7mm

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

3/8 in. x 24

1.1 in. / 28mm



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