MTD 550 THRU 570, 24BF560D062 Owner’s Manual

Operator's Manual

Log Splitter

Model Series

550 through 570

IMPORTANT: Read safety rules and instructions carefully before operating equipment.

Warning: This unit is equipped with an internal combustion engine and should nat be used an or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code), Other states may have
similar laws. Federal laws apply on federal lands, A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department, P.O, Box 368022 Cleveland, Ohio 44136-9722,

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

PRINTED IN U.S.A.

FORM NO. 770-10529B

(9/2002)

TABLEOFCONTENTS

Content Page

Important Safe Operation Practices ................................................................... 3

Assembling Your Log Splitter ............................................................................ 5

Know Your Log Splitter ...................................................................................... 7

Operating Your Log Splitter ............................................................................... 8

Adjusting Your Log Splitter ................................................................................ 10

Maintaining Your Log Splitter ............................................................................. 10

Storing Your Log Splitter .................................................................................... 12

Troubleshooting ................................................................................................. 12

Parts List ............................................................................................................ 14

FINDINGMODELNUMBER

This Operator's Manual is an important part of your new log splitter. It will help you assemble, prepare and
maintain the unit for best performance. Please read and understand what it says.

Before you start assembling your new equipment, please locate the model plate on the

equipment and copy the information from it in the space provided below. The information on
the model plate is very important if you need help from ourCustomer Support Department or

an authorized dealer.

You can locate the model number by standing behind the unit and looking down at the hydraulic tank.
A sample model plate is explained below. For future reference, please copy the model number and

the serial number of the equipment in the space below.

(Model Number}

(Serial Number)

MTD LLC
P. O. BOX 361131

800-800-7310

Copy the model number here:

Copy the serial number here:

ENGINEINFORMATION

The engine manufacturer is responsible for all engine-related issues with regards to performance, power-

rating, specifications, warranty and service. Please refer to the engine manufacturer's Owner's/Operator's
Manual packed separately with your unit for more information.

CALLINGCUSTOMERSUPPORT

If you have difficulty assembling this product or have any questions regarding the controls,
operation or maintenance of this unit, please call 1- (800)-800-7310 to reach a Customer
Support representative. Please have your unit's model number and serial number ready when

you call. See previous section to locate this information. You will be asked to enter the serial

number in order to process your call.

SECTION1: IMPORTANTSAFEOPERATIONPRACTICES

_b WARNING: This symbol points out important safety instructions which, if not followed, could endanger

the personal safety and/or property of yourself and others. Read and follow all instructions in this manual
before attempting to operate this machine. Failure to comply with these instructions may result in personal

injury. When you see this symbol - heed its warning.

WARNING: Engine exhaust, some of its constituents, and certain vehicle components
contain or emit chemicals known to the State of California to cause cancer, birth defects

or other reproductive harm.

DANGER: This machine was built to be operated according to the rules for safe operation in this manual.

As with any type of power equipment, carelessness or error on the part of the operator can result in serious
injury. This machine is capable of amputating hands and feet and throwing objects. Failure to observe the
following safety instructions could result in serious injury or death.

GeneralPractices

1. Read, understand, and follow all instructions on the
machine and in the manual(s) before attempting to

assemble and operate. Keep this manual in a safe place
for future and regular reference and for ordering
replacement parts.

2. Be familiar with all controls and proper operation. Know
how to stop the machine and disengage them quickly.

3. Never allow children under 16 years to operate this
machine. Children,16 years and over, should read and
understand instructions and safety rules in this manual
and should be trained and supervised by a parent.

4. Never allow adults to operate this machine without
proper instruction.

5. Many accidents occur when more than one person
operates the machine. If a helper is assisting in loading
logs, never activate the control until the helper is a

minimum of 10 feet from the machine.

6. Keep bystanders, helpers, pets, and children at least 20
feet from the machine while it is in operation.

7. Never allow anyone to ride on this machine.

8. Never transporf cargo on this machine.

9. Hydraulic log splitters develop high fluid pressures during
operation. Fluid escaping through a pin hole opening can
penetrate your skin and cause blood poisoning,
gangrene, or death. Give attention to the following

instructions at all times:

a. Do not check for leaks with your hand.
b. Do not operate machine with frayed, kinked,

cracked, or damaged hoses, fitting, or tubing.

c. Stop the engine and relieve hydraulic system

pressure before changing or adjusting fittings,
hoses, tubing, or other system components.

d. Do not adjust the pressure settings of the pump or

valve.

5. Leaks can be detected by passing cardboard or wood,
while wearing protective gloves and safety glasses, over
the suspected area. Look for discoloration of cardboard

or wood.

6. If injured by escaping fluid, see a doctor immediately.
Serious infection or reaction can develop if proper
medical treatment is not administered immediately.

7. Keep the operator zone and adjacent area clear for safe,
secure footing.

8. If your machine is equipped with an internal combustion
engine and it is intended for use near any unimproved
forest, brush, or grass covered land, the engine exhaust
should be equipped with a spark arrester. Make sure you
comply with applicable local, state, and federal codes.

Take appropriate firefighting equipment with you.

9. This machine should be used for splitting wood only, do
not use it for any other purpose.

10. Follow the instructions in the manual(s) provided with any
attachment(s) for this machine.

Preparation

1. Always wear safety shoes or heavy boots.

2. Always wear safety glasses or safety goggles during
operating this machine.

3. Never wear jewelry or loose clothing that might become
entangled in moving or rotating parts of the machine.

4. Make sure machine is on level surface before operating.

5. Always block machine to prevent unintended movement,
and lock in either horizontal or vertical position.

6. Always operate this machine from the operator zone(s)
specified in the manual.

7. Logs should be cut with square ends prior to splitting.

8. Use log splitter in daylight or under good artificial light.

9. To avoid personal injury or properfy damage use extreme
care in handling gasoline. Gasoline is extremely
flammable and the vapors are explosive. Serious
personal injury can occur when gasoline is spilled on
yourself or your clothes which can ignite. Wash your skin
and change immediately.

a. Use only an approved gasolinecontainer.

b. Extinguish all cigarettes, cigars, pipes, and other

sources of ignition.

c. Never fuel machine indoors.
d. Never remove gas cap or add fuel while the

engine is hot or running.

e. Allow engine to cool at least two minutes before

refueling.

f. Never overfill the fuel tank. Fill tank to no more

than 1/2 inch below bottom of filler neck to provide
space for fuel expansion.

g. Replace gasoline cap and tighten securely.

h. If gasoline isspilled, wipe it off the engine and

equipment,movemachinetoanotherarea.Wait5
minutesbeforestartingtheengine.

i. Neverstorethemachineorfuelcontainerinside

wherethereisanopenflame,sparkorpilotlight

asonawaterheater,spaceheater,furnace,

clothesdryerorothergasappliances.

j. Allowmachinetocool5minutesbeforestoring.

Operation

1. Before starting this machine, review the "Safety
Instructions". Failure to follow these rules may result in
serious injury to the operator or bystanders.

2. Never leave this machine unattended with the engine
running.

3. Do not operate machine while under the influence of
alcohol, drugs, or medication.

4. Never allow anyone to operate this machine without
proper instruction.

5. Always operate this machine with all safety equipment in
place and working. Make sure all controls are properly
adjusted for safe operation.

6. Do not change the engine governor settings or
overspeed the engine. The governor controls the
maximum safe operating speed of the engine.

7. When loading a log, always place your hands on the
sides of the log, not on the ends, and never use your foot
to help stabilize a log. Failure to do so, may result in
crushed or amputated fingers, toes, hand, or foot.

8. Use only your hand to operate the controls.

9. Never attempt to split more than one log at a time unless
the ram has fully extended and a second log is needed to
complete the separation of the first log.

10. For logs which are not cut square, the least square end
and the longest portion of the log should be placed
toward the beam and wedge, and the square end placed
toward the end plate.

11. When splitting in the vertical position, stabilize the log
before moving the control. Split as follows:

a. Place log on the end plate and turn until it leans

against the beam and is stable.

b. When splitting extra large or uneven logs, the log

must be stabilized with wooden shims or split

wood between the log and end plate or ground.

12. Always keep fingers away from any cracks that open in
the log while splitting. They can quickly close and pinch
or amputate your fingers.

13. Keep your work area clean. Immediately remove split
wood around the machine so you do not stumble over it.

14. Never move this machine while the engine is running.

15. This machine should not be towed on any street, highway
or public road without checking the existing federal, state,
or local vehicle requirements. Any licensing or
modifications such as taillights, etc., needed to comply, is
the sole responsibility of the purchaser. If a "Statement of
Origin" is required in your state, see your local dealer.

16. Do not tow machine faster than 45mph.

17. See Transporting the Log Splitter section in this manual
for proper towing instructions once all federal, local, or
state requirements are met.

MaintenanceandStorage

1. Stop the engine, disconnect the spark plug and ground it
against the engine before cleaning, or inspecting the

machine.

2. Stop the engine and relieve hydraulic system pressure
before repairing or adjusting fittings, hoses, tubing, or
other system components.

3. To prevent fires, clean debris and chaff from the engine
and muffler areas. If the engine is equipped with a spark
arrester muffler, clean and inspect it regularly according
to manufacturers instructions. Replace if damaged.

4. Periodically check that all nuts and bolts, hose clamps,
and hydraulic fittings are tight to be sure equipment is in
safe working condition.

5. Check all safety guards and shields to be sure they are in
the proper position. Never operate with safety guards,
shields, or other protective features removed.

6. The pressure relief valve is preset at the factory. Do not
adjust the valve.

7. Never attempt to move this machine over hilly or uneven
terrain without a tow vehicle or adequate help.

8. For your safety, replace all damaged or worn parts
immediately with original equipment manufacturer's
(O.E.M.) parts only. "Use of parts which do not meet the
original equipment specifications may lead to improper
performance and compromise safety!"

9. Do not alter this machine in any manner, alterations such
as attaching a rope or extension to the control lever, or
adding to the width or height of the wedge may result in
personal injury.

YourResponsibility

Restrict the use of this power machine to persons who read,
understand and follow the warnings and instructions in this
manual and on the machine. Some of the safety labels are
reproduced here. Always follow directions on safety labels

found on your equipment.

_ii¸ m_ _ ............................._..................._" ¸'¸ _ _

SECTION2: ASSEMBLINGYOURLOGSPLITTER

UnpackingfromCrate

• Pry top, sides, and ends off the crate. Set panels
aside to avoid tire puncture or personal injury.

• Remove and discard plastic bag that covers unit.

• Remove any loose parts ifincluded with unit (i.e.,
operator's manual, etc.)

• Cut and remove straps which secure parts to
bottom of crate. Unbolt any remaining parts which
may be bolted to the bottom of the crate.

WARNING: Use extreme caution unpacking

this machine. Some components are very
heavy and will require additional people or

mechanical handling equipment.

LoosePartsInCarton

• Tongue assembly

• Bottle of engine oil

• Tail light kit (optional)

BeforeAssembly

• Disconnect the spark plug wire and ground against
the engine to prevent unintended starting.

AttachingtheTongue

• With the log splitter still standing upright, remove
two hex bolts, lock washers, and hex nuts from the

end of the tongue. See Figure 1.

• Align the holes in the tongue with the holes in the
tank bracket and secure with hardware just

removed. See Figure 1.

NOTE: High pressure hose must be above the tongue
assembly.

ConnectingCylinderto Beam

• The log splitter is shipped with the beam in the
vertical position. Pull out the vertical lock beam,

rotate it back, and pivot the beam to the horizontal
position until it locks. See Figure 2.

Lock Bearn

NOTE: Reference to right or left hand side of the log
spfitter is observed from the opera ting position.

AssemblingtheTongue

AttachingtheJackStand

• The jack stand is shipped in the transport position.
Remove the spring clip and clevis pin and pivot the

jack stand towards the ground to the operating

position.

• Secure the jack stand in position with the clevis pin
and spring clip. See Figure 1.

_Spring Clip

Bracket

Lock
Washer

Pin

\

Jack
Stand

Hex Nut

.,>

Figure 2

Disconnect the dislodger from the beam weld
bracket by removing the six hex screws and flat

washers. See Figure 3.

Figure 1

Washer

Hex Bolt

Figure 3

Disconnect the log cradle from the beam on the
side of the control valve. See Figure 4.

Lock

Washer

Hex Bolt Disconnect

./ Log Cradle

Figure 4

Lift and slide the cylinder up to the top of beam and
into the weld brackets.

Attach the dislodger over the wedge assembly and
secure with hardware, previously removed, to the
weld brackets. See Figure 5.

NOTE: Once the six hex screws are tightened, there
may be a slight gap between the dislodger and the weld
brackets. This gap is normal.

• Reattach the log cradle to the side of the beam with
the control valve, aligning the ends of the cradle
with the beam flanges. See Figure 5.

• Roll log splitter off the bottom crate.

PreparingtheLogSplitter

• Lubricate the beam area (where the splitting wedge
will slide) with engine oil; do not use grease.

• Remove vented reservoir dipstick, which is located
in front of the engine on top of the reservoir tank.
See Figure 6.

• Fill the reservoir tank with Dexron III automatic

transmission fluid or 10W AW hydraulic fluid.

NOTE: The reservoir tank has a capacity of 3.5 gallons.

Check fluid level using the dipstick. See Figure 6.
Do not overfill. Replace vented dipstick securely,

tightening it until the top of the threads are flush

with top of the pipe.

Dipstick

\,

Reservoir

Tank

Figure 6

• Make sure the spark plug wire isdisconnected.

Then prime the pump by pulling the recoil starter as
far as it will go. Repeat approximately 10 times.

• Reconnect the spark plug wire and start engine

following instructions in the OPERATION section.

• Use control handle to engage the wedge to the

farthest extended position. Then retract the wedge.

• Refill tank as specified on the dipstick.

cradle here

Figure 5

NOTE: Failure to refill the tank will void unit's warranty.

• Extend and retract the wedge 12 complete cycles

to remove trapped air in the system ( the system is

"self-bleeding").

• Refill reservoir within range marked on the dipstick.

A WARNING: Much of the original fluid hasbeen drawn into the cylinder and hoses. Make

certain to refill the reservoir to prevent damage
to the hydraulic pump.

NOTE: Some fluid may overflow from the vent plug as

the system builds heat and the fluid expands and seeks

a balanced level

• If your log splitter is so equipped, attach taillights

following the taillight kit manual.

SECTION3: KNOWYOURLOGSPLITTER

Compare the illustration in Figure 7 below with the controls on your log splitter, and get familiar with its features
before starting to operate. Know how to stop the machine quickly in the event of an emergency.

Cylind_

Jack Stand

Beam Lock

Tail Light

Control Handle

Beam Assembly

Cradle

Hodzontal
Beam Lock

How it works

Reversel_

TO retuln wedtge

Neutra_ To stop

lit wood

Contro_ I _

Handle Forwar_

Vertical

BeamLock

ControlHandle

The control handle has three positions. See Figure 7.

• Move control handle FORWARD or DOWN to
move wedge down to split wood.

NOTE: Control handle will return to neutral position as

soon as handle is released.

• Release the control handle to stop the wedge
movement.

• Move control handle BACK or UP to return the
wedge toward the cylinder. The control handle will

lock in the disengaged position. Itwill return to
neutral automatically when the return stroke is

complete.

BeamLocks

These two locks, as their name suggests, are used to
secure the beam in the horizontal or the vertical

position. The vertical beam lock is located next to the oil
filter. The horizontal beam lock is located on the beam

support latch bracket. See Figure 7.

Figure 7

EngineControls

See the accompanying engine manual for the location
and function of the controls on the engine.

StoppingEngine

• Move throttle control lever to STOP or OFF
position.

• Turn off the engine switch, if so equipped.

• Disconnect spark plug wire and ground against the
engine to prevent unintended starting.

IMPORTANT: This unit is shipped without gasoline or oil
in the engine. Be certain to service engine with gasoline
and oil as instructed in the accompanying engine
manual before operating your machine.

SECTION4: OPERATINGYOURLOGSPLITTER

• Fill up gasoline if necessary.

_b WARNING: Read, understand, and follow all

instructions and warnings on the machine and
in this manual before operating.

WARNING: Wear leather work gloves,
safety shoes, ear protection, and safety

glasses when operating a log splitter. Ensure
safe footing.

GasandOilFill-Up

• Service the engine with gasoline and oil as
instructed in the engine manual packed with your

log splitter. Read instructions carefully.

_ WARNING: Use extreme care when

NOTE: Gasoline can be added to the engine when the
log spfitter is in either the horizontal or vertical position.

However, there are less obstructions when the unit is in
the vertical position.

handling gasoline. Gasoline is extremely
flammable and the vapors are explosive. Never

fuel machine indoors or while the engine is hot
or running.

StartingEngine

• Attach spark plug wire to spark plug. Make certain
the metal cap on the end of the spark plug wire is
fastened securely over metal tip of the spark plug.

• Turn fuel valve, if equipped, to the ON position.

• Move choke lever, if equipped, to CHOKE position.

• If the engine is equipped with a primer, follow
instructions in the engine manual to prime it.

• Turn the throttle control lever to the FAST position.

• Grasp starter handle and pull rope out slowly until
engine reaches start of compression cycle (rope
will pull slightly harder at this point).

• Pull rope with a rapid, full arm stroke. Keep firm grip
on starter handle. Let rope rewind slowly. Repeat
until engine cranks.

• After engine starts, move choke lever to OFF
position. Place throttle lever to the speed desired.

• In cold weather, run wedge up or down beam 6 to 8
times to circulate the hydraulic fluid.

• Lubricate with engine oil the beam area where
splitting wedge will slide. Do not use grease to

lubricate. Make sure to lubricate both the front and

the back of the beam face.

• Attach spark plug wire to the spark plug.

Usingthe LogSplitter

• Place the log splitter on level, dry ground.

• Place the beam in either the horizontal or vertical
position and lock in place with the appropriate

locking rod.

• Block the front and back of both wheels.

• Place the log against the end plate and only split
wood in the direction of the grain.

• To stabilize the log, place your hand only on sides
of tog. Never place hand on the end between the
log and the splitting wedge.

• Only one adult should stabilize the log and operate

the control handle, so the operator has full control

over the log and the splitting wedge.

ControlHandle

1. Move control handle FORWARD or DOWN to split
wood.

2. Release the control handle to stop the wedge
movement.

3. Move control handle BACK or UP to return the
wedge.

VerticalPosition

• Pull the horizontal beam lock out to release the
beam and pivot the beam to the vertical position.

• To lock the beam in the vertical position, pull out on

the vertical beam lock and rotate it to secure the

beam. See Figure 7.

• Stand in front of the unit to operate the control
handle and to stabilize the log. See Figure 8A.

A

/

/

/-

/

_ WARNING: When starting a warm engine,

the muffler and surrounding areas are hot and
can cause a burn. Do not touch.

BeforeEachUse

• Remove the dipstick and check hydraulic fluid level.
Refill if necessary.

• Check engine oil level. Refill if necessary.

/

/

/-

/

Figure 8

B

HorizontalPosition

• Pull the vertical beam lock out and rotate it down.
See Figure 7. Pivot beam to the horizontal position.
The beam will lock automatically in horizontal

position.

• Stand behind the reservoir tank to operate control
handle and to stabilize the log. See Figure 8B.

,_ WARNING: Always use the log splitter inthevertical position when splitting heavy logs.

Pivot beam lock down to release the beam.
Carefully pull back on beam and lower itto the

horizontal position.The horizontal beam lock will
lock automatically. See Figure 7.

OperatingTips

Always:

1. Use clean fluid and check fluid level regularly.

2. Use Dexron III Automatic Transmission Fluid or

10W AW hydraulic fluid.

3. Use a filter (clean or replace regularly)

4. Use a breather cap on fluid reservoir.

5. Make sure pump is mounted and aligned properly.

6. Use a flexible "spider" type coupling between
engine and pump drive shafts.

7. Keep hosesclear and unblocked.

8. Bleed air out of hoses before operating.

9. Flush and clean hydraulic system before restarting
after servicing.

10. Use "pipe dope" on all hydraulic fittings.

11. Allow time for warm-up before splitting wood.

12. Prime the pump before initial start-up by turning
over the engine with spark plug disconnected.

13. Split wood along the grain (lengthwise) only.

Never:

1. Use when fluid is below 20 ° F or above 150° F.

2. Use a solid engine/pump coupling.

3. Operate through relief valve for long.

4. Attempt to adjust unloading or relief valve settings
without pressure gauges.

5. Operate with air in hydraulic system.

6. Use teflon tape on hydraulic fittings.

7. Attempt to cut wood across the grain.

RaisingandLoweringBeam

• Use control handle to run wedge up and down
beam 6 to 8 times to circulate the hydraulic fluid,
which wilt warm and thin the fluid.

• Place log splitter on a firm, level surface.

• To raise the beam for vertical operation: Pull out
the vertical beam lock on the tongue.

• Pivot beam lock down to release the beam.

• Move the beam to the vertical position. Secure it
with the beam lock on the reservoir tank assembly.

• To lower the beam: Pull out the horizontal beam
lock on the reservoir tank.

Transportingthe LogSplitter

IMPORTANT:Always turn fuel valve to OFF position

before transporting the log splitter.

• Lower the beam to its horizontal position. Make
certain the beam is locked securely with the

horizontal beam lock.

• Remove spring clip and clevis pin from jack stand.

• Support the tongue and pivot the jack stand up

against the tongue. See Figure 9.

Tongue

Assembly Spring _ I

Jack Stand

• Secure with the spring clip and clevis pin previously

removed. See Figure 9.

• Attach coupler hitch to a class Ior higher 1-7/8" ball

on a towing vehicle; latch securely.

a. If coupler hitch does not fit on ball: Turn

adjustment nut one turn counter-clockwise.

b. If coupler hitch is too loose on ball: Turn

adjustment nut one turn clockwise.

• Connect the safety chains to the towing vehicle.

• Plug in the tail lights, if so equipped, to the tail light
connector on the tow vehicle.

,_ WARNING: Do not towfaster than 45mph

and check local, state, and federal
requirements before towing on any public road.

NOTE: Use caution when backing up. It is
recommended to use a spotter outside the vehicle.

Clevis Pin _(P

Clip _'1 I

Figure 9

SECTION5: ADJUSTINGYOURLOGSPLITTER

NOTE: The gibs may be rotated and/or tumed over for

any any

,_ WARNING: Do not at time make

adjustments without first stopping engine,
disconnecting spark plug wire, and grounding it

against the engine.

WedgeAssemblyAdjustment

As normal wear occurs and there is excessive "play"
between the wedge and beam, adjust the bolts on the
side of the wedge assembly to eliminate excess space
between the wedge and the beam. See Figure 10.

• Loosen the jam nuts on the two adjustment bolts on
the side of the wedge. Turn the adjustment bolts in

until snug and then back them off slowly until the
wedge assembly will slide on the beam.

• Tighten the jam nuts securely against the side of
the wedge to hold the adjustment bolts in this

position.

GibAdjustment

Periodically remove and replace the "gibs" (spacers)

between the wedge assembly and the back plate.
See Figure 10.

even wear.

• Loosen the lock nuts under the each back plate and
slide the gibs out.

• Turn or replace the gibs.

• Reassemble the back plate and secure with the
lock washers and lock nuts.

• Readjust the bolts on the side of the wedge
assembly.

Adjustment

oo,\

I I

Lock N_

Figure 10

=_ Lock

Washer

SECTION6: MAINTAININGYOURLOGSPLITTER

8. Excessive heating of the hydraulic system

9. Attempting to start unit intemperatures under 20°F

,_ WARNING: Before cleaning, lubricating,

repairing, or inspecting, disengage the control

lever and stop engine. Disconnect the spark
plug wire and ground it against the engine to
prevent unintended starting.

Conditionsthatwill voidWarranty

1. Failure to maintain proper fluid level in reservoir

2. Changing the relief valve setting or pressure
adjustment of control valve without proper
knowledge and instructionfrom the factory

,_ WARNING: Higher pressure could cause

3. Disassembling the pump

4. Use of incorrect hydraulic fluid

5. Allowing the flexible pump coupler to deteriorate

6. Lack of lubrication or improper lubrication of the

7. Improper adjustment of splitting wedge

the hoses to burst, cylinder to rupture, and
intense fluid to be released, which could result

in serious personal injury.

without proper and regular inspection

beam or unit

without pre-heating fluid in reservoir

10. Unattended leaks in hydraulic system

HydraulicFluid

• Check the hydraulic fluid level in the log splitter
reservoir tank before each use.

• Maintain fluid level within the range specified on the
dipstick at all times.

• Change the hydraulic fluid in the reservoir every
100 hours of operation.

• Disconnect the suction hose from the bottom of the
reservoir tank and drain the fluid into a suitable

container. Refill using only Dexron III automatic
transmission fluid or 10W AW hydraulic fluid.

NOTE: Please dispose of used hydraufic fluid and
engine oil at approved recycling centers only.

Since contaminants in fluid may damage the
hydraulic components, you will have to drain the

fluid and flush the reservoir tank and hoses with

kerosene whenever any repair work is performed

10

on the tank, hydraulic pump or valve. For this job,
contact your nearest service dealer.

HydraulicFilter

• Change the hydraulic filter every 50 hours of
operation. Use only a 10 micron hydraulic filter.
Order part number 723-0405.

BeamandSplittingWedge

• Lubricate both sides of the beam (where it comes
into contact with the splitting wedge), before each
use, with engine oil. The wedge plate on the log
splitter is designed so the gibs on the side of the
wedge plate can be removed and rotated and/or

turned over for even wear.

• Make certain to readjust the adjustment bolts so
wedge moves freely, but no excess space exists
between the wedge plate and the beam.

HoseClamps

• Check, before each use, if hose clamps on the
suction hose (attached to the side of the pump) are
tight. Check the hose clamps on the return hose at

least once a season.

Engine

Refer to the engine manual for all maintenance needs.

• Loosen set screw on pump coupling half and
remove coupling half.

• Slide new engine coupling half onto the engine
shaft until the end of the shaft is flush with the inner

portion of the coupling half. (There must be space
between end of the engine support bracket and

coupling half). Tighten set screw.

• Install pump coupling half and key on pump shaft.
Rotate coupling half until set screw faces opening
in shield. Do not tighten set screw.

• Install nylon "spider" onto engine coupling half.

• Align pump coupling half with nylon "spider" by
rotating engine using starter handle. Slide coupling
half into place while guiding three mounting bolts

through holes in pump support bracket.

• Secure with nuts and washers removed earlier.

• Set .010" to .060" clearance between the nylon
"spider" and the engine coupling half by sliding a
matchbook cover between the nylon "spider" and

the engine coupling half and moving pump coupling

half as needed. Secure pump coupling half with set
screw. See Figure 11.

NOTE: Make certain proper clearance is obtained

before tightening set screw.

Gear Pump

Set

FlexiblePumpCoupler

The flexible pump coupler is a nylon "spider" insert,
located between the pump and the engine shaft. Over
time, the coupler will harden and deteriorate.

Replace the coupler if you detect vibration or noise

coming from the area between the engine and the
pump. If the coupler fails completely, you will

experience a loss of power.
IMPORTANT: Never hit the engine shaft in any manner,

as a blow will cause permanent damage to the engine.

• Remove three nuts and lock washers that secure
the pump to the coupling shield. Two nuts are at the

bottom corners and one is in the top center.

• Remove the pump.

• Rotate the engine by slowly pulling starter handle
until engine coupling half set screw is visible.
Loosen set screw using allen wrench and slide
coupling half off engine shaft.

Nylon Steel

"Spider'_

Insert Halves

Figure 11

Tires

See sidewall of tire for recommended pressure.
Maximum tire pressure under any circumstances is 30
p.sJ. Maintain equal pressure on all tires.

_lb WARNING: Excessive pressure (over 30p.s.L) when seating beads may cause tire/rim

assembly to burst with force sufficient to cause
serious injury.

11

SECTION7: STORINGYOURLOGSPLITTER

Prepare your log splitter for storage at the end of the

season or if the log splitter will not be used for 30 days
or more.

4_ WARNING: Never store machine with fuel

• Clean the log splitter thoroughly.

NOTE: We do not recommend the use of pressure

washers or garden hose to clean your unit. They may
cause damage to electric components, spindles,

pulleys, bearings or the engine. The use of water will

result in shortened life and reduce serviceability.

• Wipe unit with an oiled rag to prevent rust,

in the fuel tank inside of building where fumes
may reach an open flame or spark, or where

ignition sources are present such as hot water
and space heaters, furnaces, clothes dryers,

stoves, electric motors, etc.

especially on the wedge and the beam.

SECTION8: TROUBLESHOOTING

• Drain fuel tank. Always drain fuel into approved
container outdoors, away from open flame. Be sure
that engine is cool before draining the fuel. Do not

smoke while handling fuel.

• Start the engine and let it run until the fuel lines and
carburetor are empty.

• Remove spark plug. Holding a rag over the cylinder

hole, pour approximately 1/2 ounce (approximately
one tablespoon) of engine oil into cylinder and

crank slowly to distribute the oil.

• Replace spark plug.

• Do not store gasoline from one season to another.

• Replace your gasoline can if it starts to rust. Rust

and/or dirt in the gasoline will cause problems.

• Store unit in aclean, dry area. Do not store next to
corrosive materials, such as fertilizer.

NOTE: If storing in an unventilated or metal storage

shed, be certain to rustproof the equipment by coating

with a light oil or silicone.

Problem Cause

Engine fails to start

Engine runs erratic

Engine overheats

NOTE: For repairs beyond those listed above, contact your nearest authorized service center.

1. Spark plug wire disconnected.

2. Fuel tank empty or stale fuel.

3. Throttle control lever not in correct
starting position.

4. Choke, if equipped, not in CHOKE
position.

5. Engine (if equipped with a primer)
not primed properly.

6. Blocked fuel line.

7. Faulty spark plug.

1. Spark plug wire loose.

2. Unit running on CHOKE, if so
equipped.

3. Blocked fuel line or stale fuel.

4. Water or dirt in fuel system.

5. Dirty air cleaner.

6. Carburetor out of adjustment.

1. Engine oil level low.

2. Dirty air cleaner.

3. Carburetor not adjusted properly.

1. Connect wire to spark plug.

2. Fill tank with clean, fresh gasoline.

3. Move throttle lever to FAST position.

4. Move choke to CHOKE position.

5. Prime engine.

6. Clean fuel line.

7. Clean, adjust gap, or replace.

1. Connect and tighten spark plug wire.

2. Move choke lever to OFF position.

3. Clean fuel line; fill tank with clean, fresh
gasoline

4. Drain fuel tank. Refill with fresh fuel.

5. Clean or replace air cleaner.

6. See authorized service dealer.

1. Fill crankcase with proper oil.

2. Clean or replace air cleaner.

3. See authorized service dealer.

Remedy

12

HydraulicTroubleshooting

Problem Cause

Cylinder rod will not move

Slow cylinder shaft speed
while extending and

retracting.

Leaking cylinder

Engine runs but wood will
not split or wood splits too
slowly

Engine stalls during
splitting

Engine will not turn or
stalls under low load

conditions

Leaking pump shaft seal

1. Broken drive shaft.

2. Shipping plugs left in hydraulic
hoses.

3. Set screws in coupling not adjusted
properly.

4. Loose shaft coupling.

5. Gear sections damaged.

6. Damaged relief valve.

7. Hydraulic lines blocked.

8. Incorrect oil level.

9. Damaged directional valve.

10. Blocked directional valve.

1. Gear sections damaged.

2. Excessive pump inlet vacuum.

3. Slow engine speed.

4. Damaged relief valve.

5. Incorrect oil level.

6. Contaminated oil.

7. Directional valve leaking internally.

8. Internally damaged cylinder.

1. Broken seals.

2. Scored cylinder.

1. Small gear section damaged.

2. Pump check valve leaking.

3. Excessive pump inlet vacuum.

4. Incorrect oil level.

5. Contaminated oil.

6. Directional valve leaking internally.

7. Overloaded cylinder.

8. Internally damaged cylinder.

1. Low horsepower/weak engine.

2. Overloaded cylinder.

1. Engine/pump misalignment.

2. Frozen or seized pump.

3. Low horsepower/weak engine.

4. Hydraulic lines blocked.

5. Blocked directional valve.

1. Broken drive shaft.

2. Engine/pump misalignment.

3. Gear sections damaged.

4. Poorly positioned shaft seal.

5. Plugged oil breather.

Remedy

1. See authorized service dealer.

2. Disconnect hydraulic hoses, remove
shipping plugs, reconnect hoses.

3. See operator's manual for correct
adjustment.

4. Correct engine/pump alignment as
necessary.

5. See authorized service dealer.

6. See authorized service dealer.

7. Flush and clean hydraulic system.

8. Check oil level.

9. See authorized service dealer.

10. Flush and clean hydraulic system.

1. See authorized service dealer.

2. Make certain pump inlet hoses are clear
and unblocked-use short, large

diameter inlet hoses.

3. See authorized service dealer.

4. See authorized service dealer.

5. Check oil level.

6. Drain oil, clean reservoir, and refill.

7. See authorized service dealer.

8. See authorized service dealer.

1. See authorized service dealer.

2. See authorized service dealer.

1. See authorized service dealer.

2. See authorized service dealer.

3. Make certain pump inlet hoses are clear
and unblocked.

4. Check oil level.

5. Drain oil, clean reservoir, and refill.

6. See authorized service dealer.

7. Do not attempt to split wood against the
grain.

8. See authorized service dealer.

1. See authorized service dealer.

2. Do not attempt to split wood against the
grain or see authorized service dealer.

1. Correct alignment as necessary.

2. See authorized service dealer.

3. See authorized service dealer.

4. Flush and clean hydraulic system.

5. Flush and clean hydraulic system.

1. See authorized service dealer.

2. Correct alignment as necessary.

3. See authorized service dealer.

4. See authorized service dealer.

5. Make certain reservoir is properly
vented.

NOTE: For repairs beyond those listed here, contact your nearest authorized service center.

13

SECTION9: PARTSLISTFORMODELSERIES550 THROUGH570

2 1

29

28

_l Z 13 1_6 17 2

26

21 40

31

85

57

j60

84

45

67j

68

C

42

69

53

70

79 _

65

A

74

75

78

48

81

82

79

14

ModelSeries550through570

Ref.

No.

1. 718-0769

2. 727-0634

3. 710-1018

4. 737-0192

5. 781-0526

6. 737-0153

7. 718-0481

8. 781-0538

9. 710-0515

10. 719-0550

11. 737-0238

12. 712-0239

13. 712-0711

14. 710-0459A

15. 781-0351

16. 710-0604A

17. 781-1054

18. 681-0162

19. 736-0300

20. 710-0654A

21. 781-1048

22. 781-0790

23. 736-0921

24. 737-0312

25. 727-0443

26. 726-0132

27. 737-0316

28. 781-04000

29. 710-1238

30. 712-3010

31. 736-0119

32. 781-1024

33. 723-0405

34. 710-0376

35. 681-0164

36. 625-0062

37. 711-1587

38. 736-0116

39. 714-0470

40. 781-1027

Part No.

731-2496

725-2058
725-2059
725-2060

Part Description

Hydraulic Cylinder
Hydraulic Tube

Hex Cap Screw 1/2-20 x2.75
90 Degree Solid Adapter

Hose Guard

Return Elbow

Control Valve
Hose Guard

Hex Cap Screw 1/2-20 x 3.50
Wedge Assembly

Nipple Pipe 1/2-14

Lock Nut 1/2-20
Hex Jam Nut 3/8-24

Hex Cap Screw 3/8-24 x 1.5
Adjustable Gib

Hex Washer Screw 5/16-18 x .625
Support Bracket
Beam Assembly

Flat Washer .406 ID x .875 OD

Hex Washer Screw 3/8-16 x 1.0

Dislodger

Back Plate
Lock Washer 1/2

Adapter 3/4-14

Return Hose 3/4" ID x 44" Lg.

Hose Clamp 5/8"

Filter Housing
Fender: Steel

Fender: Plastic
Hex Washer Screw 5/16-18 x .875
Hex Nut 5/16-18

Lock Washer 5/16

Fender Mounting Bracket
Oil Filter

Hex Cap Screw 5/16-18 x 1.01"
Light Bracket LH 1"

Taillight 1"

RH Taillight Assembly
LH Taillight Assembly
Wiring Harness

Clevis Pin

Flat Washer .635 ID x .93 OD
Cotter Pin

Light Bracket RH 1"

Ref.

No.

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.

74.

75.

76.

77.

78.

79.

80.

81.

82.

83.

84.

85.

Part No.

710-3097
712-0798

781-0682
781-0686
681-0161
726-0214
732-0583
710-0521
781-0690
737-0348
710-1338
710-0654A
634-0186
712-0359
714-0162
734-0873

719-0353
714-0122

718-0686
712-0123
736-0119
781-0097
727-0633
718-0683
737-0329
727-0502
781-0788
747-1261
781-1045
715-0120
732-3127
736-0169
710-0944

736-0262
713-0433

750-0497
727-0311
712-0375
711-0813
736-0185
732-0194
781-0789
736-0351
736-0371

Part Description

Carriage Bolt 3/8-16 x 1.0
Hex Nut 3/8-16

Leg Tray
Leg Tray Bracket
Frame Assembly
Push Cap
Compression Spring

Hex Bolt 3/8-16 x 3"
Lock Rod

Vented Dipstick
Hex Screw 5/16-24 x 3.25

Hex Washer Screw 3/8-16 x 1.0
Wheel Assembly

Slotted Nut 3/4-16
Cotter Pin

Hub Cap
Coupling Shield

Square Key 3/16" x .75
Flexible Coupling

Hex Nut 5/16-24
Lock Washer 5/16" ID

Rear Coupling Support Bracket
Hose

Gear Pump (1 lgpm)
45 Degree Elbow
High Pressure Hydraulic Hose
Tongue Tube Assembly

Latch Rod
Latch

Spiral Pin
Spring Compression

L-Washer 3/8"
Hex Cap Screw 3/8-16 x 4.25

Flat Washer .385 ID x .870 OD
Chain

Spacer .375 ID x .625 OD
Coupling Hitch

Hex Lock Nut 3/8-16
Clevis Pin
Flat Washer .375 ID x .738 OD

Spring Pin
Jack Stand

Flat Washer .760 ID x .500 OD
Flat Washer

1"If equipped

15

MANUFACTURER'S LIMITED WARRANTY FOR:

The limited warranty set forth below is given by MTD LLC with
respect to new merchandise purchased and used in the

United States, its possessions and territories.

MTD LLC warrants this product against defects for a period of
two (2) years commencing on the date of original purchase
and will, at its option, repair or replace, free of charge, any
part found to be defective in materials or workmanship. This
limited warranty shall only apply if this product has been
operated and maintained in accordance with the Operator's
Manual furnished with the product, and has not been subject
to misuse, abuse, commercial use, neglect, accident,
improper maintenance, alteration, vandalism, theft, fire,
water, or damage because of other peril or natural disaster.

Damage resulting from the installation or use of any
accessory or attachment not approved by MTD LLC for use
with the product(s) covered by this manual will void your
warranty as to any resulting damage.

Normal wear parts or components thereof are subject to
separate terms as follows: All normal wear parts or
component failures will be covered on the product for aperiod
of 90 days regardless of cause. After 90 days, but within the
two year period, normal wear part failures will be covered
ONLY IF caused by defects in materials or workmanship of

OTHER component parts. Normal wear parts and
components include, but are not limited to: batteries, belts,

blades, blade adapters, grass bags, rider deck wheels, seats,
snow thrower skid shoes, shave plates, auger spiral rubber,

and tires.
ROW TO OBTAIN SERVICE: Warranty service is available,

WiTH PROOF OF PURCHASE, through your local authorized
service dealer. To locate the dealer in your area, check your
Yellow Pages, or contact MTD LLC at P.O. Box 361131,

Cleveland, Ohio 44136-0019, or call 1-800-800-7310 or 1-
330-220-4683 or log on to our Web site at

www.mtdprnducts.com.
This limited warranty does not provide coverage in the

following cases:
a. The engine or component parts thereof. These items

carry a separate manufacturer's warranty. Refer to
applicable manufacturer's warranty for terms and

conditions.

b. Log splitter pumps, valves, and cylinders have a sepa

rate one year warranty.

c. Routine maintenance items such as lubricants, filters,

blade sharpening, tune-ups, brake adjustments, clutch
adjustments, deck adjustments, and normal

deterioration of the exterior finish due to use or

exposure.

d. MTD LLC does not extend any warranty for products

sold or exported outside of the United States, its
possesions and territories, except those sold through

MTD LLC's authorized channels of export distribution.

e. Parts that are not genuine MTD parts are not covered

by this warranty.

f. Service completed by someone other than an

authorized service dealer is not covered by this
warranty.

g. Transportation charges and service calls are not

covered.

No implied warranty, including any implied warranty of
merchantability of fitness for a particular purpose,

applies after the applicable period of express written
warranty above as to the parts as identified. No other

express warranty, whether written or oral, except as
mentioned above, given by any person or entity,
including a dealer or retailer, with respect to any product,
shall bind MTD LLC. During the period of the warranty,
the exclusive remedy is repair or replacement of the
product as set forth above.

The provisions as set forth in this warranty provide the
sole and exclusive remedy arising from the sale. MTD

LLC shall not be liable for incidental or consequential
loss or damage including, without limitation, expenses

incurred for substitute or replacement lawn care services
or for rental expenses to temporarily replace a warranted
product.

Some states do not allow the exclusion or limitation of
incidental or consequential damages, or limitations on how

long an implied warranty lasts, so the above exclusions or
limitations may not apply to you.

In no event shall recovery of any kind be greater than the

amount of the purchase price ofthe product sold. Alteration

of safety features of the product shall void this warranty.

You assume the risk and liability for loss, damage, or injuryto
you and your property and/or to others and their property
arising out of the misuse or inability to use the product.

This limited warranty shall not extend to anyone other than the
original purchaser or to the person for whom it was purchased
as a gift.

HOW STATE LAW RELATES TO THIS WARRANTY: This

limited warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.

MTDLLC,P.O.BOX361131CLEVELAND,OHIO44136-0019; Phone:[phone]