Harbor Freight 10 Ton Hydraulic Log Splitter Product Manual

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Manual for the 67090 10 Ton Hydraulic Log Splitter 67090 Manual Hydraulic Log Splitter - 10 Ton

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SAVE THIS MANUAL

NOTICE is used to
address practices
not related to personal injury.

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 (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.

CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
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.

IMPORTANT SAFETY
INFORMATION
In this manual, on the labeling,
and all other information
provided with this product:
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.
DANGER indicates
a hazardous
situation which, if not
avoided, will result in death or
serious injury.
WARNING
indicates a
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
with the safety
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
SKU 67090

SAVE THESE INSTRUCTIONS

IMPORTANT SAFETY
PRECAUTIONS
1.

Set up and use only on a flat, level,
outdoor, well-ventilated area.

2.

Wear ANSI-approved safety glasses
under a full face shield, NIOSHapproved dust mask/respirator,
heavy-duty work gloves, hard hat,
and steel-toe work boots during set
up and use.

3.

Keep children away from the
equipment, especially while it is
operating.

4.

Do not leave the equipment
unattended when it is running. Turn
off the equipment before leaving the
work area.

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

Page 2

5.

6.

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.
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.

7.

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

8.

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.

9.

Keep the equipment and surrounding
area clean at all times.

10. 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.
11.

Moving parts can crush
and cut hands and fingers.
Keep hands clear of the
Ram Plate, Wedge, and
logs while splitting.

12. Be thoroughly familiar with all controls
and with the proper use of the Log
SKU 67090

Splitter. Know how to stop the Log
Splitter and relieve system pressure
quickly if needed.
13. Make sure all fittings are tight before
applying pressure.
14. Be aware of the added length of the
Log Splitter when transporting.
15. If a log becomes jammed in the
Wedge, back off pressure and
remove log with a pry bar.
FIGURE A

CORRECT
LOG
ORIENTATION

INCORRECT
LOG
ORIENTATION

16. This Log Splitter is designed to split
logs up to 18” long and 6-1/2” in
diameter, lengthwise with the grain
only. (See Figure A.)
17. Always operate the Log Splitter with
all safety equipment in place and in
proper working order, and all controls
properly adjusted for safe operation.
18. Always relieve the system pressure
before inspecting, cleaning, adjusting,
or repairing the Log Splitter.
19. 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.)
20. When spills of fuel or oil occur, they
must be cleaned up immediately.
Dispose of fluids and cleaning

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

Page 3

materials as per any local, state,
or federal codes and regulations.
Store oil rags in a bottom-ventilated,
covered, metal container.
21. Keep hands and feet away from
moving parts. Do not reach over or
across equipment while operating.
22. 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.
23. 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.

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.
30. Do not allow anyone to operate the
Log Splitter who has not read this
manual or has not been instructed
on the safe use of the Splitter. The
Log Splitter owner should instruct
all operators in safe Log Splitter
operation.
31. Store equipment out of the reach
of children and other unauthorized
persons.

SAVE THESE
INSTRUCTIONS.

24. Keep all safety guards in place and in
proper working order.
25. Never add attachments to the
Log Splitter, except for authorized
accessories supplied by the
manufacturer with instructions for
safe installation and use.
26. Use the Log Splitter only in daylight
so you can see what you are doing.
27. Never attempt to change the height
or speed of the splitting Wedge.
28. Maintain labels and nameplates
on the Log Splitter. These carry
important information. If unreadable
or missing, contact Harbor Freight
Tools for a replacement.
29. Have the Log Splitter serviced by a
qualified repair person using only
identical replacement parts. This
SKU 67090

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

Page 4

FUNCTIONAL DESCRIPTION
Jack
Handles (3)

Specifications
Log Cutting Capacity
(Maximum)

18” L / 6-1/2” Dia.

Minimum Log Length

13-1/2” L

Ram Stroke

8-1/16”

Ram (9)

INITIAL TOOL SET UP/
ASSEMBLY

Socket

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.
Note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagrams near
the end of this manual.

Figure 1

OPERATING INSTRUCTIONS
Read the ENTIRE IMPORTANT
SAFETY INFORMATION section
at the beginning of this manual
before use of this product.
The Splitting Operation - Additional
Safety Instructions:

Unpacking

1.

When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-888-866-5797 as soon
as possible.

Hold the bark side of logs when
loading or positioning, never the
ends. Never place your hands or any
body parts between a log and any
part of the Log Splitter.

2.

Never load or unload logs while the
Ram (9) is moving.

3.

Do not pile logs to be split in a place
that will make you reach across the
Log Splitter in order to load them.

4.

Log ends that are not cut square can
slide out while splitting and cause
a safety hazard or cause excessive
force to Log Splitter components.
Use a chainsaw (not included) to
cut logs square on each end before
attempting to split them.

Please note: The Log Splitter
is heavy; use care and proper lifting
techniques when move the Log Splitter.

Assembly
1.

To assemble, insert one Jack
Handle (3) into each of the sockets
on the Ram (9). See Figure 1,
above.

SKU 67090

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

Page 5

5.

6.

Never attempt to split more than
one log at a time. A piece of log can
unexpectedly be thrown from the
machine, causing severe personal
injury.
Do not use the Log Splitter to split
logs across the grain. Doing so will
damage the Log Splitter and could
also cause pieces of log to be thrown,
injuring the operator or bystanders.

Note: Many accidents occur when there is
more than one person involved in loading
and operating the Log Splitter. Only one
person should operate at a time. If a
second person is assisting in loading logs,
NEVER allow an assistant to hold the log
in place while the operator pulls on the
Jack Handles.

2.

This action will force the log against
the Wedge Base and split the log.

3.

Remove the split pieces.

4.

Turn Handle Wheel (36A)
counterclockwise no more than one
full turn to retrieve the Ram. See
Figure 2.

5.

Turn Handwheel clockwise until snug.

6.

When finished, store the Log
Splitter with the Hand Wheel turned
counterclockwise one turn to relieve
the hydraulic pressure built up during
use.

To Remove A Stuck Log:
1.

A log can be stuck on the Wedge
Base if the Wedge becomes
embedded in the log and the log
doesn’t completely split and separate.
This can happen if the log is too
stringy or tough to split completely.
If this happens, follow the directions
below.

2.

WARNING! Never attempt to remove
a stuck log by doing the following:

To Operate:
1.

Grip one Handle in each hand and
pump the Handles in a back-and-forth
stroke motion. See Figure 2, below.
Pump Handles in back and forth motion
Handle Wheel (36A)

Jack
Handles (3)

• Using the hydraulic force of the Log
Splitter.
• Modifying the Log Splitter.

Ram Plate (6)

• Adding attachments to the Log
Splitter.

Wedge Base (1)

Figure 2

SKU 67090

3.

WARNING! Personal injury could
result from log or metal pieces flying
out at high speed toward the operator
or bystanders, or the Log Splitter
could become damaged.

4.

Fully retract the Ram.

5.

Remove the stuck log from the
Wedge manually with a pry bar.

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

Page 6

6.

IMPORTANT: Be extremely careful
as log pieces may fly off as they
separate from the Wedge.

7.

Do not attempt to re-split a stuck log
once it has been removed from the
Wedge. Manually split with a maul,
or cut with a chainsaw.

WARNING! Remove Split Logs: Move
each split log away from the Log
Splitter. Split logs left near the Log
Splitter are a tripping hazard.
To Bleed the Log Splitter:
1.

Extend Ram to its maximum length.

2.

Remove the Oil Plug (6A) and top off
oil. See Figure 3, below.

Handle Wheel (36A)
Oil Plug (6A)
Piston Rod (18A)

Figure 3

3.

Turn Handwheel counterclockwise as
fast as possible. Piston Rod (18A) will
retract into Ram and push air out of
Cylinder (23A) via Oil Plug hole. Top
off oil as needed.

4.

Replace the Oil Plug and repeat
steps 1-3 as needed.

5.

To add oil, remove the Oil Plug and
add oil to just below the Fill Plug.
Then Replace Oil Plug.

SKU 67090

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

Page 7

qualified technician service the
equipment instead.

MAINTENANCE
TO PREVENT
SERIOUS INJURY
FROM EQUIPMENT FAILURE:
Do not use damaged
equipment. If abnormal noise
or vibration occurs, have the
problem corrected before
further use.

1.

BEFORE EACH USE: Inspect the
Log Splitter and verify that there are
loose or damaged parts.

2.

AFTER EACH USE: Wipe down
Log Splitter with a clean, soft cloth,
making sure to clean up any excess
or spilled hydraulic oil.

Many maintenance procedures,
including those not detailed
in this manual, will need to
be performed by a qualified
technician for safety.

3.

WHEN STORING: Retract the
Ram to and turn the Handwheel
counterclockwise by one turn to keep
the Hydraulic Cylinder Rod protected
from corrosion.

If you have any doubts about
your ability to safely service
the Log Splitter, have a

4.

Store the Log Splitter in a clean, dry,
safe location away from children and
other unauthorized persons.

SKU 67090

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

Page 8

TROUBLESHOOTING
Problem
Ram will not move.

Possible Cause
1. Handwheel is open.
2. Wedged wood under Ram.
3. Blocked hydraulic lines.
4. Blocked control valve.
5. Damaged control valve.

6. Damaged cylinder piston.

Slow Ram speed when extending or retracting.

1. Slow pumping of Jack
Handles.
2. Air in oil.
3. Damaged control valve.

4. Internal control valve leak.

5. Internally damaged cylinder.

Wood will not split, or splits extremely slowly.

1. Air in oil.
2. Excessive control valve inlet
vacuum.
3. Low control valve setting.

4. Internal control valve leak.

5. Internally damaged cylinder.

Possible Solution
1. Turn Handwheel clockwise
until snug.
2. Remove an foreign objects
from below Ram.
3. Flush and clean the Splitter’s
hydraulic system.
4. Flush and clean the Splitter’s
hydraulic system.
5. Have a qualified service
technician repair/replace
control valve.
6. Have a qualified service
technician repair/replace
cylinder piston.
1. Move Jack Handles at a
faster pace.
2. Purge air from Splitter’s
hydraulic system.
3. Have a qualified service
technician repair/replace
control valve.
4. Have a qualified service
technician repair/replace
control valve.
5. Have a qualified service
technician repair/replace
cylinder.
1. Check for excessive air in
hydraulic reservoir.
2. Check control valve inlet hose
for blockage or kinks.
3. Have a qualified service
technician adjust control valve
with a pressure gauge.
4. Have a qualified service
technician repair/replace
control valve.
5. Have a qualified service
technician repair/replace
cylinder.

Follow all safety precautions whenever diagnosing
or servicing the equipment.

SKU 67090

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

Page 9

Part
1
2
3
4
5
6
7
8
9

PARTS LIST AND ASSEMBLY DIAGRAM

Description

Qty.

Wedge Base
Handle Grip
Jack Handle
Spacer
Lock Spring
Ram Plate
Pin
U-Bolt
Ram

1
2
2
1
3
1
1
1
1

Part
10
11
12
13
14
15
16
17
18

Description

Ram Return Spring
Hex Bolt M8x20
Lock Washer Ø10
Flat Washer Ø8
Wheel Axle
Wheel
Large Flat Washer Ø10
Hex Nut M10
Spacer

2

Qty.
2
2
2
2
2
2
2
2
2

1

3

2

5

4

6

3
8

10

7
9

10
161217
5
14

111813

14

15

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.

SKU 67090

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

Page 10

PUMP PARTS LIST AND ASSEMBLY DIAGRAM
Part
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
11A
12A
13A
14A
15A
16A
17A
18A
19A
20A
2A

Description

Cap
O-Ring
Rectangle Ring
Cylinder Jacket
Rectangle Ring
Oil Plug
Lock Spring
Right Socket
Axis Pin 8x28
Pump Core
Split Washer
O-Ring 6.6x3
J-Dust Ring
Small Pump Cylinder
Small Pump Washer
Steel Ball Ø6
Base
Pistion Rod
Pressure Adjusting Screw
O Ring
1A

3A

6A

Qty.

Part

1
1
1
1
1
1
4
1
4
1
1
1
1
1
1
5
1
1
1
1

21A
22A
23A
24A
25A
26A
27A
28A
29A
30A
31A
32A
33A
34A
35A
36A
37A
38A
39A

4A

Description

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

5A

9A
9A
10A 11A

12A

13A
14A 15A
16A
37A

8A
7A

21A 22A 23A

18A

Qty.

Bowl Washer
O Ring
Cylinder
Cylinder Washer
Safety Valve Screw
Left Socket
Big Pump Core
Retainer Ring
O Ring 12x3.5
J-Dust Ring
Big Pump Cylinder
Big Pump Washer
Rectangle Ring
Release Valve Rod
Spring Pin 4x22
Handle Wheel
Steel Ball Ø4
Spring Base
Adjusting Spring

7A

38A

16A16A

39A
19A
7A

7A

20A
26A

9A

SKU 67090

29A
27A

9A

28A

24A

24A

25A
16A

34A
30A 32A 16A 17A 33A
31A 36A

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

Page 11

LIMITED 90 DAY WARRANTY
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.
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 • (888) 866-5797
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.

SKU 67090

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

Page 12



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