MTD 26M User manual

Safety • Assembly • Operation • Maintenance • Troubleshooting • Engine • Parts Lists • Warranty
Warning: This unit is equipped with an internal combustion engine and should not be used on 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 361131 Cleveland,
Ohio 44136-0019.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
PRINTED IN U.S.A.
READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION
IMPORTANT
OPERATOR’S MANUAL
22” Rotary Mower — Model 26M
10/12/2006
FORM NO. 769-02298B

2
Slope Gauge........................................................ 3
Safe Operation Practices................................... 4
Setup and Adjustment ....................................... 6
Operating Your Lawn Mower.............................. 8
Maintaining Your Lawn Mower......................... 10
Trouble Shooting .............................................. 12
Off Season Storage and Safety Labels........... 13
Engine Appendix .............................................. 14
Engine Safe Operation Practices................. 14
Operating Your Engine .................................. 16
Maintaining Your Engine ............................... 18
Parts List ........................................................... 22
Warranty .............................................Back Cover
Table of Contents
BEFORE YOU BEGIN TO ASSEMBLE YOUR NEW
EQUIPMENT, please locate the model plate on the
equipment and copy the information to the sample
model plate provided to the right. You can locate the
model plate by standing at the operating position and
looking down at the rear of the deck. This information
will be necessary to use the manufacturer’s web
site, to obtain assistance from the Customer Sup-
port Department, or when contacting an authorized
service dealer.
This Operator’s Manual is an important part of your new lawn mower. It will help you assemble,
prepare and maintain the unit for best performance. Please read and understand what it says.
Finding and Recording Model Number
Model Number Serial Number
• Visit www.mtdproducts.com
• Call a Customer Support Representative at 1-800-800-7310.
MTD LLC reserves the right to change product specifications, designs, and equipment without notice and without incurring obligation.
Please do NOT return the unit to the retailer from which it was
purchased, without first contacting Customer Support.
Customer Support
If you have difficulty assembling this product or have any questions regarding the controls, operation, or
maintenance of this unit, you can seek help from the experts. Choose from the options below:

3
1
Slope
Gauge
WARNING
Do not mow on inclines
with a slope in excess
of 15 degrees (a rise
of approximately
2-1/2 feet every 10
feet). A riding mower
could overturn and
cause serious injury.
If operating a walk-
behind mower on such
a slope, it is extremely
difficult to maintain your
footing and you could
slip, resulting in serious
injury.
Operate RIDING
mowers up and down
slopes, never across
the face of slopes.
Operate
WALK-BEHIND
mowers across the
face of slopes, never
up and down slopes.
3IGHTANDHOLDTHISLEVELWITHAVERTICALTREE
ORACORNEROFABUILDING
ORAFENCEPOST
&OLDALONGDOTTEDLINEREPRESENTSASLOPE

Use this page as a guide to determine slopes where you may not operate safely.
Do not operate your lawn mower on such slopes.

4
2
Safe
Operation
Practices Children
Tragic accidents can occur if operator is not alert to presence
of children. Children are often attracted to mower and mowing
activity. They do not understand the dangers. Never assume
that children will remain where you last saw them.
1. Keep children out of the mowing area and under watchful
care of a responsible adult other than the operator.
2. Be alert and turn mower off if a child enters the area.
3. Before and while moving backwards, look behind and down
for small children.
4. Use extreme care when approaching blind corners,
doorways, shrubs, trees, or other objects that may obscure
your vision of a child who may run into the mower.
5. Keep children away from hot or running engines. They can
suffer burns from a hot muffler.
6. Never allow children under 14 years old to operate a power
mower. Children 14 years old and over should read and
understand operation instructions and safety rules in this
manual and should be trained and supervised by a parent.
General Operation
1. Read this operator’s manual carefully in its entirety before
attempting to assemble this machine. Read, understand,
and follow all instructions on the machine and in the
manual(s) before operation. Be completely familiar with
the controls and the proper use of this machine before
operating it. Keep this manual in a safe place for future
and regular reference and for ordering replacement parts.
2. This machine is a precision piece of power equipment,
not a plaything. Therefore, exercise extreme caution at all
times. Your unit has been designed to perform one job: to
mow grass. Do not use it for any other purpose.
3. Never allow children under 14 years old to operate this
machine. Children 14 years old and over should read and
understand the instructions in this manual and should
be trained and supervised by a parent. Only responsible
individuals who are familiar with these rules of safe
operation should be allowed to use this machine.
4. Thoroughly inspect the area where the equipment is to
be used. Remove all stones, sticks, wire, bones, toys
and other foreign objects, which could be tripped over or
picked up and thrown by the blade. Thrown objects can
cause serious personal injury. Plan your mowing pattern
to avoid discharge of material toward roads, sidewalks,
bystanders and the like. Also, avoid discharging material
against a wall or obstruction, which may cause discharged
material to ricochet back toward the operator.
5. To help avoid blade contact or a thrown object injury,
stay in operator zone behind handles and keep children,
bystanders, helpers and pets at least 75 feet from mower
while it is in operation. Stop machine if anyone enters
area.
6. Always wear safety glasses or safety goggles during opera-
tion and while performing an adjustment or repair to protect
your eyes. Thrown objects which ricochet can cause serious
injury to the eyes.
7. Wear sturdy, rough-soled work shoes and close-fitting
slacks and shirts. Shirts and pants that cover the arms and
legs and steel-toed shoes are recommended. Never operate
this machine in bare feet, sandals, slippery or light-weight
(e.g. canvas) shoes.
8. Do not put hands or feet near rotating parts or under cutting
deck. Contact with blade can amputate hands and feet.
9. A missing or damaged discharge cover can cause blade
contact or thrown object injuries.
10. Many injuries occur as a result of the mower being pulled
over the foot during a fall caused by slipping or tripping.
Do not hold on to the mower if you are falling; release the
handle immediately.
11. Never pull the mower back toward you while you are
walking. If you must back the mower away from a wall or
obstruction first look down and behind to avoid tripping and
then follow these steps:
a. Step back from mower to fully extend your arms.
b. Be sure you are well balanced with sure footing.
c. Pull the mower back slowly, no more than half way
toward you.
d. Repeat these steps as needed.
12. Do not operate the mower while under the influence of
alcohol or drugs.
13. Do not engage the self-propelled mechanism on units so
equipped while starting engine.
14. The blade control handle is a safety device. Never attempt
to bypass its operation. Doing so makes the safety device
inoperative and may result in personal injury through
contact with the rotating blade. The blade control handle
must operate easily in both directions and automatically
return to the disengaged position when released.
15. Never operate the mower in wet grass. Always be sure of
your footing. A slip and fall can cause serious personal
injury. If you feel you are losing your footing, release the
blade control handle immediately and the blade will stop
rotating within three seconds.
16. Mow only in daylight or good artificial light. Walk, never run.
17. Stop the blade when crossing gravel drives, walks or roads.
18. If the equipment should start to vibrate abnormally, stop the
engine and check immediately for the cause. Vibration is
generally a warning of trouble.
WARNING: Engine Exhaust, some of its constituents, and certain vehicle compo-
nents contain or emit chemicals known to State of California to cause cancer and
birth defects or other reproductive harm.
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 at-
tempting to operate
this machine. Failure
to comply with these
instructions may result
in personal injury. When
you see this symbol.
HEED ITS WARNING!
Your Responsibility
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.
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.

5
19. Shut the engine off and wait until the blade comes to a
complete stop before removing the grass catcher or unclog-
ging the chute.
The cutting blade continues to rotate for a few seconds after
the engine is shut off. Never place any part of the body in
the blade area until you are sure the blade has stopped
rotating.
20. Never operate mower without proper trail shield, discharge
cover, grass catcher, blade control handle or other safety
protective devices in place and working. Never operate
mower with damaged safety devices. Failure to do so can
result in personal injury.
21. Muffler and engine become hot and can cause a burn. Do
not touch.
22. Only use parts and accessories made for this machine by
manufacturer. Failure to do so can result in personal injury.
23. If situations occur which are not covered in this manual,
use care and good judgment. Contact your dealer for
assistance.
Slope Operation
Slopes are a major factor related to slip and fall accidents, which
can result in severe injury. Operation on slopes requires extra
caution. If you feel uneasy on a slope, do not mow it. For your
safety, use the slope gauge included as part of this manual to
measure slopes before operating this unit on a sloped or hilly
area. If the slope is greater than 15 degrees, do not mow it.
Do:
1. Mow across the face of slopes; never up and down. Exercise
extreme caution when changing direction on slopes.
2. Watch for holes, ruts, rocks, hidden objects, or bumps
which can cause you to slip or trip. Tall grass can hide
obstacles.
3. Always be sure of your footing. A slip and fall can cause
serious personal injury. If you feel you are losing your
balance, release the blade control handle immediately, and
the blade will stop rotating within 3 seconds.
Do Not:
1. Do not mow near drop-offs, ditches or embankments, you
could lose your footing or balance.
2. Do not mow slopes greater than 15 degrees as shown on
the slope gauge.
3. Do not mow on wet grass. Unstable footing could cause
slipping.
Service
Safe Handling Of Gasoline:
1. To avoid personal injury or property 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 clothes
immediately.
2. Use only an approved gasoline container.
3. Never fill containers inside a vehicle or on a truck or trailer
bed with a plastic liner. Always place containers on the
ground away from your vehicle before filling.
4. Remove gas-powered equipment from the truck or trailer
and refuel it on the ground. If this is not possible, then refuel
such equipment on a trailer with a portable container, rather
than from a gasoline dispenser nozzle.
5. Keep the nozzle in contact with the rim of the fuel tank or
container opening at all times until fueling is complete. Do
not use a nozzle lock-open device.
6. Extinguish all cigarettes, cigars, pipes and other sources
of ignition.
7. Never fuel machine indoor because flammable vapors will
accumulate in the area.
8. Never remove gas cap or add fuel while engine is hot or
running. Allow engine to cool at least two minutes before
refueling.
9. Never over fill fuel tank. Fill tank to no more than ½ inch
below bottom of filler neck to provide for fuel expansion.
10. Replace gasoline cap and tighten securely.
11. If gasoline is spilled, wipe it off the engine and equipment.
Move unit to another area. Wait 5 minutes before starting
engine.
12. Never store the machine or fuel container near an open
flame, spark or pilot light as on a water heater, space
heater, furnace, clothes dryer or other gas appliances.
13. To reduce fire hazard, keep mower free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage and
remove any fuel soaked debris.
14. Allow a mower to cool at least 5 minutes before storing.
General Service:
1. Never run an engine indoors or in a poorly ventilated area.
Engine exhaust contains carbon monoxide, an odorless
and deadly gas.
2. Before cleaning, repairing, or inspecting, make certain the
blade and all moving parts have stopped. Disconnect the
spark plug wire and ground against the engine to prevent
unintended starting.
3. Check the blade and engine mounting bolts at frequent
intervals for proper tightness. Also, visually inspect blade
for damage (e.g., bent, cracked, worn) Replace blade with
the original equipment manufacture’s (O.E.M.) blade only,
listed in this manual. “Use of parts which do not meet the
original equipment specifications may lead to improper
performance and compromise safety!”
4. Mower blades are sharp and can cut. Wrap the blade or
wear gloves, and use extra caution when servicing them.
5. Keep all nuts, bolts, and screws tight to be sure the equip-
ment is in safe working condition.
6. Never tamper with safety devices. Check their proper
operation regularly.
7. After striking a foreign object, stop the engine, discon-
nect the spark plug wire and ground against the engine.
Thoroughly inspect the mower for any damage. Repair the
damage before starting and operating the mower.
8. Never attempt to make a wheel or cutting height adjust-
ment while the engine is running.
9. Grass catcher components, discharge cover, and trail
shield are subject to wear and damage which could
expose moving parts or allow objects to be thrown. For
safety protection, frequently check components and re-
place immediately with original equipment manufacturer’s
(O.E.M.) parts only, listed in this manual. “Use of parts
which do not meet the original equipment specifications
may lead to improper performance and compromise
safety!”
10. Do not change the engine governor setting or over-rev the
engine. The governor controls the maximum safe operating
speed of the engine.
11. Maintain or replace safety labels, as necessary.
12. Observe proper disposal laws and regulations. Improper
disposal of fluids and materials can harm the environment.
2
Safe
Operation
Practices
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 man-
ual before attempting to
operate this machine.
Failure to comply with
these instructions may
result in personal injury.
When you see this
symbol.
HEED IT’S WARNING!
Your Responsibility
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.

6
3
Setup and
Adjustment
1. For shipping purposes, the chute deflector on your
mower is held in an upright position by a retainer.
Remove the retainer as follows:
a. Push chute deflector up towards engine. Holding
deflector in this position, remove the retainer and
discard. See Figure 3-1.
b. Lower the chute deflector carefully keeping your
fingers out of the way.
WARNING: The chute retainer
must be removed and discarded
before operating the mower.
2. Perform the following sequence for handle setup:
a. Lift the upper handle up from folded position A and
pull it to extended position B following the arrow
in Figure 3-2. The handle should click into this
position.
b. Make sure the carriage bolt is seated properly
in the handle. Tighten wing nuts securing upper
handle to the lower handle
3. If satisfied with height of handle, tighten wing nuts at
the ends of the lower handle shown in Figure 3-3. For
convenience of operating, you may adjust the handle
height by removing the wing nuts and removing the
lower handle.
a. Position each handle bracket stud into the top hole
in the lower handle. See Figure 3-3 inset.
b. Tighten the wing nuts.
4. Insert post on cable ties into holes provided on the
lower handle. Pull cable tie tight and trim excess. See
Figure 3-4.
Figure 3-3
Figure 3-2
NOTE: Your mower
is shipped with the
handle in the higher
height position.
NOTE: Each end of
the lower handle must
be placed in the same
relative position.
Figure 3-1
Figure 3-4
WARNING
The chute retainer
must be removed and
discarded before
operating the mower.
NOTE: This Operator’s
Manual covers several
models. Lawn Mower
features vary by
model. Not all features
discussed (or engines
pictured) in this manual
are applicable to all
Lawn Mower models.
A
B
A
B
A
B

7
CUTTING HEIGHT
All wheels must be
placed in the same
relative position. For
rough or uneven lawns,
move the height adjust-
ment lever to a higher
position. This will stop
scalping of grass.
MULCHING BAFFLE
For proper assembly,
install bottom lip inside
chute opening before
placing hooks over the
hinge pin.
3
Setup and
Adjustment
Figure 3-7
IMPORTANT
This unit is shipped
without gasoline or oil
in the engine. Fill up
gasoline and oil as
instructed in the engine
operation section
BEFORE operating
your mower.
5. Rope guide Setup as follows in Figure 3-5:
a. Hold the blade control against the upper handle.
b. Slowly pull starter rope out of engine.
c. Slip starter rope into the rope guide.
d. Tighten rope guide wing nut.
6. Each wheel has a height adjustment lever to change
the cutting height of the mower.
a. Depress height adjustment lever towards wheel.
b. Slide lever to desired position for a change in
cutting height. See Figure 3-6.
c. Release lever towards deck.
7. Install mulching baffle on the right side of the mower
following the steps below:
a. Lift up and hold the side-discharge chute deflector
and insert bottom lip of the mulching baffle inside
the chute opening See Figure 3-7.
b. Snap hooks of the mulching baffle over the hinge
pin of the chute deflector. The hooks must snap
into place on the hinge pin, locking the mulching
baffle firmly onto mower. Release chute deflector.
Figure 3-6
Figure 3-5
A
B
B
A
B
C
A
B
C
D

8
4
Operating
Your Lawn
Mower
Now that you have set up your lawn mower for opera-
tion, get aquainted with its controls and features. These
are described below and illustrated on this page. This
knowledge will allow you to use your new equipment to
its fullest potential.
Blade Control
The blade control is attached to the upper handle of
the mower. Depress and squeeze it against the upper
handle to operate the unit. Release it to stop engine and
blade.
WARNING: This blade control mecha-
nism is a safety device. Never attempt
to bypass its operations.
Drive Control
The drive control is located on the underside of the
upper handle and is used to engage the drive. Squeeze
it against the upper handle to engage the drive; release
it to slow down or stop mower from propelling. See
Figure 4-1.
Mulching Baffle
Instead of collecting the grass clippings in the grass
catcher, your mower has the option of recirculating the
clippings back to the lawn. Remove grass catcher (if
applicable), and operate with the mulching baffle only
for this purpose.
Cutting Height Adjustment Levers
One adjustment lever is located on each wheel and is
used to adjust the cutting height. All four levers have to
be at the same relative position to ensure a uniform cut.
Recoil Starter
The recoil starter is attached to the right upper handle.
Stand behind the unit and pull the recoil starter rope to
start the unit.
Choke Control
The choke control is located on the left side of the handle
and when activated, closes the choke plate on the
carburetor and aids in starting the engine.
Gas and Oil Fill-Up
1. Add oil provided before starting unit for the first time
out of the box. Follow engine operation section for
this. See Figure 4-1 above for location of the oil fill.
2. Service the engine with gasoline as instructed in the
engine operation section. See Figure 4-1 above for
location of gas fill.
WARNING: Use extreme care when han-
dling gasoline. Gasoline is extremely
flammable and the vapors are explosive.
Never fuel the machine indoors or while
the engine is hot or running. Extinguish
cigarettes, cigars, pipes and other
sources of ignition.
WARNING
The blade control
mechanism is a
safety device. Never
attempt to bypass its
operations.
Use extreme care
when handling
gasoline. Gasoline is
extremely flammable
and the vapors are
explosive. Never fuel
the machine indoors
or while the engine
is hot or running.
Extinguish cigarettes,
cigars, pipes and
other sources of
ignition.
Keep hands and feet
away from the chute
area on cutting deck.
Refer to warning
label on the unit.
Figure 4-1
Know Your Lawn Mower
Blade Control
Recoil
Starter
Height Adjustment
Levers
Mulching Baffle
Drive Control
Oil Fill
Gasoline Fill
Choke Control

9
4
Operating
Your Lawn
Mower
WARNING
The operation of any
lawn mower can result
in foreign objects
being thrown into
the eyes, which can
damage your eyes
severely. Always wear
safety glasses while
operating the mower,
or while performing
any adjustments or
repairs on it.
Be sure no one other
than the operator is
standing near the lawn
mower while starting
engine or operating
mower. Never run
engine indoors or
in enclosed, poorly
ventilated areas. En-
gine exhaust contains
carbon monoxide, an
odorless and deadly
gas. Keep hands, feet,
hair and loose clothing
away from any moving
parts on engine and
lawn mower.
WARNING: The operation of any lawn
mower can result in foreign objects
being thrown into the eyes, which can
damage your eyes severely. Always
wear safety glasses while operating
the mower, or while performing any
adjustments or repairs on it.
Starting Engine
WARNING: Be sure no one other than
the operator is standing near the lawn
mower while starting engine or operat-
ing mower. Never run engine indoors
or in enclosed, poorly ventilated areas.
Engine exhaust contains carbon monox-
ide, an odorless and deadly gas. Keep
hands, feet, hair and loose clothing
away from any moving parts on engine
and lawn mower.
WARNING: Always keep hands
and feet clear of equipment
moving parts. Do not use a pres-
surized starting fluid. Vapors are
flammable.
1. Pull out the choke knob located on the left side of the
upper handle. See Figure 4-2.
NOTE: Use of the choke is not necessary if the engine is
warm or the air temperature is high.
2. Standing behind the mower, depress the blade control
and hold it against the upper handle.
3. Pull the starter grip lightly until resistance is felt,
then pull rapidly to overcome compression, prevent
kickback and start engine. Repeat if necessary. See
Figure 4-2 .
IMPORTANT: Do not allow the starter grip to snap
back against the rope guide. Return it gently to prevent
damage to the starter.
4. When engine warms up, push in the choke knob. See
Figure 4-2.
Stopping Engine
1. Release blade control to stop the engine and blade.
Using Your Lawn Mower
WARNING: Never operate your mower
without either the rear door or the entire
grass catcher assembly firmly secured.
Be sure lawn is clear of stones, sticks, wire, or other
objects which could damage lawn mower or engine.
Such objects could be accidently thrown by the mower
in any direction and cause serious personal injury to the
operator and others.
WARNING: If you strike a foreign
object, stop the engine. Remove
spark plug boot from the spark plug,
thoroughly inspect mower for any
damage, and repair damage before
restarting and operating. Extensive
vibration of mower during operation
is an indication of damage. The unit
should be promptly inspected and
repaired.
1. Once the engine is running, squeeze the drive
control against the upper handle to propel mower.
2. For best results, do not cut wet grass.
3. For a healthier lawn, never cut off more than one-
third of the total length of the grass.
Using as Mulcher
For mulching grass, remove the grass catcher (if
apllicable) and install mulching baffle following instruc-
tions in Set Up and Adjustment.
1. For effective mulching, do not cut wet grass.
2. New or thick grass may require a narrower cut.
Adjust ground speed according to condition of lawn.
3. If the grass has been allowed to grow in excess of
4 inches, mulching is not recommended. Use the
grass catcher to bag clippings instead.
Figure 4-2
1
4
2
3

10
5
Maintaining
Your Lawn
Mower
WARNING
Always stop engine,
disconnect spark
plug, and ground
against engine before
performing any type
of maintenance on
your machine.
We do not recommend
the use of a pressure
washer or garden
hose to clean your
unit. These may cause
damage to electric
components, spindles,
pulleys, bearings, or
the engine. The use
of water will result in
shortened life and
reduce serviceability.
Figure 5-1
General Recommendations
1. Always observe safety rules when performing
any maintenance.
2. The warranty on this lawn mower does not cover
items that have been subjected to operator abuse
or negligence. To receive full value from warranty,
operator must maintain the lawn mower as
instructed here.
3. Changing of engine-governed speed will void
engine warranty.
4. All adjustments should be checked at least once
each season.
5. Periodically check all fasteners and make sure these
are tight.
WARNING: Always stop engine,
disconnect spark plug, and ground
against engine before cleaning,
lubricating or doing any kind of
maintenance on your machine.
Lubrication
1. Lubricate pivot points on the blade control and drive
control at least once a season with light oil. These
controls must operate freely in both directions. See
Figure 5-1.
2. Lubricate the wheels at least once a season with
light oil (or motor oil). If wheels are removed for any
reason, lubricate surface of the pivot arm and inner
surface of the wheel with light oil. See Figure 5-1.
3. Lubricate the torsion spring and pivot point on each
end of the side mulching plug/ chute deflector periodi-
cally with light oil to prevent rust. See Figure 5-1.
4. The transmission is pre-lubricated and sealed at the
factory and does not require lubrication.
5. Follow the engine maintenance section for lubrication
schedule and instruction for engine lubrication.
Deck Care
1. Disconnect spark plug boot. Drain gasoline from lawn
mower, or place a piece of plastic under the gas cap.
2. Tip mower so that it rests on the housing. Keep the
side with the air cleaner facing up. Hold mower firmly.
WARNING: Never tip the mower more
than 90 degrees in any directions and
do not leave the mower tipped for any
length of time. Oil can drain into the
upper part of the engine causing a
starting problem.
3. Scrape and clean the underside of the deck with a
suitable tool. Do not spray with water.
4. Put the mower back on its wheels on the ground. If
you had put plastic under the gas cap earlier, make
sure to remove it now.
Engine Care
1. Maintain oil level as instructed in the engine mainte-
nance section.
2. Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extremely
dusty conditions. Refer to the engine maintenance
section.
3. Clean spark plug and reset the gap once a season.
Check the engine maintenance section for correct
plug type and gap specifications.
4. Clean engine regularly with a cloth or brush. Keep the
cooling system (blower housing area) clean to permit
proper air circulation. Remove all grass, dirt and
combustible debris from muffler area.

11
5
Maintaining
Your Lawn
Mower
WARNING
When removing
the cutting blade
for sharpening or
replacement or
when sliding the belt
around it, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade.
An unbalanced blade
will cause excessive
vibration when rotat-
ing at high speeds. It
may cause damage
to mower, and could
break causing per-
sonal injury.
Blade Care
WARNING: When removing cutting
blade for sharpening or replacement,
protect your hands with a pair of heavy
gloves or use a heavy rag to hold blade.
1. Disconnect spark plug boot from spark plug. Turn
mower on its side making sure that the air filter and
the carburetor are up.
2. Remove bolt, bell washer, blade, and blade adapter
from the engine crankshaft. See Figure 5-2.
3. The blade can be sharpened with a file or on a grind-
ing wheel. Do not attempt to sharpen the blade while
it is still on the mower. When sharpening blade, follow
original angle of grind. Grind cutting edges equally to
keep blade balanced.
4. Remove blade from the adapter for testing balance.
Balance the blade on a round shaft screwdriver to
check. Remove metal from the heavy side until it
balances evenly.
WARNING: An unbalanced blade will
cause excessive vibration when rotating
at high speeds. It may cause damage
to mower, and could break causing
personal injury.
5. Lubricate the engine crankshaft and the inner surface
of the blade adapter with light oil. Slide the blade
adapter onto the engine crankshaft. Place the blade
on the adapter such that the side of the blade marked
“Bottom” (or with part number) faces the ground when
the mower is in the operating position. Make sure that
blade is aligned and seated on blade adapter flanges.
6. Place bell washer on the blade. Replace hex bolt and
tighten hex bolt to torque: 450 in. lbs. min., 600 in. lbs.
max.
To ensure safe operation of your mower, periodically
check the blade bolt for correct torque.
Belt Care
1. Remove the front drive cover by sliding off the
two plastic rivets on each side of the cover with a
screwdriver. See Figure 5-3.
2. Disconnect belt tension spring from transmission. See
Figure 5-3.
3. Push transmission up a little and slide belt off the
transmission pulley. Lift mower to access belt from
underside of mower. Slide belt off of engine pulley and
around the blade. See Figure 5-4.
4. Replace with new belt, working around blade. Make
sure belt is firmly seated on engine pulley while
pulling from the other side and sliding it around the
transmission pulley. Secure belt tension spring to the
transmission. Reassemble front drive cover.
Figure 5-2
Figure 5-3
Figure 5-4
1
1
32

12
For repairs beyond
the minor adjust-
ments listed here,
contact an authorized
service dealer.
6
Trouble
Shooting
CauseProblem Remedy
Engine fails to start 1. Blade control disengaged.
2. Spark plug boot disconnected.
3. Fuel tank empty or stale fuel.
4. CHOKE not activated.
5. Faulty spark plug.
6. Blocked fuel line.
7. Engine flooded.
1. Engage blade control.
2. Connect wire to spark plug.
3. Fill tank with clean, fresh gasoline.
4. Choke engine as instructed in
“Operating Your Lawn Mower”.
5. Clean, adjust gap, or replace.
6. Clean fuel line.
7. Wait a few minutes to restart.
Engine runs erratic 1. Connect and tighten spark
plug boot.
2. Clean fuel line; fill tank with clean,
fresh gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with
fresh fuel.
5. Refer to engine maintenance
section.
6. Push CHOKE knob in.
1. Spark plug boot loose.
2. Blocked fuel line or stale fuel.
3. Vent in gas cap plugged.
4. Water or dirt in fuel system.
5. Dirty air cleaner.
6. Unit running with CHOKE applied.
Engine overheats 1. Fill crankcase with proper oil.
2. Remove blower housing
and clean.
1. Engine oil level low.
2. Air flow restricted.
Occasional skips
(hesitates) at
high speed
1. Adjust gap to .030”.1. Spark plug gap too close.
Idles poorly 1. Reset gap to .030” or replace
spark plug.
2. Refer to engine maintenance
section.
1. Spark plug fouled, faulty or gap
too wide.
2. Dirty air cleaner.
Mower will not
mulch grass (If
Equipped)
1. Do not mow when grass is wet;
wait until later to cut.
2. Mow once at a high cutting height,
then mow again at desired height
or make a narrower cutting path.
3. Sharpen or replace blade.
1. Wet grass.
2. Excessively high grass.
3. Dull blade.
Uneven cut 1. Place all four wheels in same
height position.
2. Sharpen or replace blade.
1. Wheels not positioned correctly.
2. Dull blade.
Excessive
Vibration
1. Cutting blade loose or unbalanced.
2. Bent cutting blade.
1. Tighten blade and adapter.
Balance blade.
2. See an authorized service dealer.
Mower will not
self propel
1. Check belt for proper pulley instal-
lation and movement.
2. Stop engine, disconnect spark plug
boot and clean out debris.
3. Inspect and replace belt.
1. Belt not installed properly.
2. Debris clogging drive operation.
3. Damaged or worn belt.

13
7
WARNING
DO NOT remove safety
(or any) labels from
mower for any reason.
NOTE: Safety labels
vary by model. Not all
labels shown on this
page are applicable
to all Lawn Mower
models.
2
/
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Read and follow Operating Instructions before running
engine.
Gasoline is flammable. Allow engine to cool at least
2 minutes before refueling.
Engines emit carbon monoxide. DO NOT run in enclosed
area.
TO REDUCE THE RISK OF INJURY, DO NOT
OPERATE UNLESS DISCHARGE COVER OR
GRASS CATCHER IS IN ITS PROPER PLACE.
IF DAMAGED, REPLACE IMMEDIATELY.
Off Season
Storage
and Safety
Labels
Off-Season Storage
The following steps should be taken to prepare your lawn
mower for storage.
1. Clean and lubricate mower thoroughly as described in
the lubrication instructions.
2. We do not recommend the use of a pressure washer
or garden hose to clean your unit.
3. Refer to engine maintenance section for correct
engine storage instructions.
4. Coat mower’s cutting blade with chassis grease to
prevent rusting.
5. Store mower in a dry, clean area. Do not store next
to corrosive materials, such as fertilizer.
When storing any type of power equipment in a poorly
ventilated or metal storage shed, care should be taken
to rust-proof the equipment. Using a light oil or silicone,
coat the equipment, especially cables and all moving
parts of your lawn mower before storage.

14
8
Engine
Safe
Operation
Practices
Gasoline and its vapors are
extremely flammable and
explosive. Fire or explosion can
cause severe burns or death. If
gasoline is spilled on yourself
or your clothes, wash your skin
and change clothes immediately.
• When adding fuel, turn engine OFF and let engine
cool at least 2 minutes before removing gas cap.
• Fill fuel tank outdoors or in well ventilated area.
• Use only an approved gasoline container.
•Never fill containers inside a vehicle or on a truck or
trailer bed with a plastic liner. Always place contain-
ers on the ground away from your vehicle before
filling.
• If possible, remove gas-powered equipment from the
truck or trailer and refuel it on the ground. If this is
not possible, then refuel such equipment on a trailer
with a portable container, rather than from a gasoline
dispenser nozzle.
• Keep the nozzle in contact with the rim of the fuel
tank or container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.
• Do not overfill fuel tank. Fill tank to approximately
2 cm below lowest portion of neck to allow for fuel
expansion.
• Keep gasoline away from sparks, open flames, pilot
lights, heat, and other ignition sources.
• Never fuel equipment indoors because flammable
vapors will accumulate in the area.
• Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
• Check fuel line, tank, cap, and fittings frequently for
cracks or leaks. Replace if necessary.
• When starting engine, make sure spark plug, muffler,
fuel cap and air cleaner are in place.
• Do not crank engine with spark plug removed.
• If fuel spills, wait until it evaporates before starting
engine.
• When operating equipment, do not tip engine or
equipment at angle which causes gasoline to spill.
• Do not choke carburetor to stop engine.
• When transporting equipment, transport with fuel tank
EMPTY.
• When storing gasoline or equipment with fuel in tank,
store away from furnaces, stoves, water heaters or
other appliances that have pilot light or other ignition
source because they can ignite gasoline vapors.
Starting engine creates spark-
ing. Sparking can ignite nearby
flammable gases. Explosion and
fire could result.
• If there is a natural or LP gas leakage in area, do not
start engine.
• Do not use pressurized starting fluids because vapors
are flammable.
Engines give off carbon mon-
oxide, an odorless, colorless,
poisonous gas. Breathing carbon
monoxide can cause nausea,
fainting, or death.
• Start and run engine outdoors.
• Do not start or run engine in enclosed area, even if
doors or windows are open.
Unintentional sparking can result
in fire or electric shock. Unin-
tentional start-up can result in
entanglement, traumatic amputa-
tion, or laceration.
• Before peforming adjustments or repairs, disconnect
spark plug wire and keep it away from spark plug.
• When testing for spark, use approved spark plug
tester.
• Do not check for spark with spark plug removed.
WARNING: Gasoline and its vapors are extremely flammable and explosive. Fire or
explosion can cause severe burns or death. If gasoline is spilled on yourself or your
clothes, wash your skin and change clothes immediately.
WARNING
Gasoline and its vapors
are extremely flam-
mable and explosive.
Fire or explosion can
cause severe burns
or death. If gasoline is
spilled on yourself or
your clothes, wash your
skin and change clothes
immediately.
Starting engine creates
sparking. Sparking can
ignite nearby flamma-
ble gases. Explosion
and fire could result.
Unintentional sparking
can result in fire or
electric shock. Unin-
tentional start-up can
result in entanglement,
traumatic amputation,
or laceration.

15
Running engine produces heat.
Engine parts, especially muffler,
become extremely hot. Severe
thermal burns can occur on
contact. Combustible debris,
such as leaves, grass, brush, etc.,
can catch fire.
• Allow muffler, engine cylinder, and fins to cool before
touching.
• Keep children away from hot or running engines. They
can suffer burns from a hot muffler.
• Remove accumulated combustibles from muffler and
cylinder area.
Rotating engine parts can
contact or entangle hands, feet,
hair, clothing, or accessories.
Traumatic amputation or severe
laceration can result.
• Operate equipment with guards in place.
• Keep hands and feet away from rotating parts.
•Tie up long hair and remove jewelry.
• Do not wear loose-fitting clothing, dangling draw-
strings or items that could become caught.
Rapid retraction of starter cord
(kickback) will pull hand and
arm toward engine faster than
you can let go. Broken bones,
fractures, bruises or sprains
could result.
• When starting engine, pull cord slowly until resis-
tance is felt, then pull rapidly.
• Remove all external equipment/engine loads before
starting engine.
• Direct coupled equipment components such as, but
not limited to blades, impellers, pulleys, sprockets,
etc., must be securely attached.
Safety Label Location
This label warns you of potential hazards that can
cause serious injury. Read it carefully. See Figure 1 for
explanation of symbols.
If the label comes off or becomes hard to read, contact
the dealer for replacement.
8
Engine
Safe
Operation
Practices
WARNING
Running engine
produces heat. Engine
parts, especially muf-
fler, become extremely
hot. Severe thermal
burns can occur on
contact. Combustible
debris, such as leaves,
grass, brush, etc., can
catch fire.
Rotating engine parts
can contact or entangle
hands, feet, hair, cloth-
ing, or accessories.
Traumatic amputation
or severe laceration
can result.
Rapid retraction of
starter cord (kickback)
will pull hand and
arm toward engine
faster than you can
let go. Broken bones,
fractures, bruises or
sprains could result.
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International Symbols and Meanings
Figure 1

16
9
Operating
Your
Engine
Pre-Operation Check
Oil Recommendations
IMPORTANT: This engine is shipped without gasoline or
oil in the engine. Running the engine with insufficient oil
can cause serious engine damage and void the engine
warranty.
• Before starting engine, fill with oil. Do not over-fill. Oil
capacity is about 20 oz.
Use a 4-stroke, or an equivalent high detergent,
premium quality motor oil certified to meet or exceed
U.S. automobile manufacturer’s requirements for service
classification SG, SF. Motor oils classified SG, SF will
show this designation on the container.
SAE 10W-30 is recommended for general, all tem-
perature use. If single viscosity oil is used, select the
appropriate viscosity for the average temperature in your
area from the chart to the right.
Know Your Engine
1. Single Viscosity
2. Multi Viscosity
IMPORTANT: Using nondetergent oil or 2-stroke
engine oil could shorten the engine’s service life.
Read this section before starting your lawn mower engine. Compare the illustrations in Figure 9-1 with your lawn
mower engine to familiarize yourself with the location of various controls and adjustments.
Ambient Temperature
IMPORTANT: This
engine is shipped
without gasoline or oil
in the engine. Running
the engine with insuf-
ficient oil can cause
serious engine damage
and void the engine
warranty.
IMPORTANT: Using
nondetergent oil or 2-
stroke engine oil could
shorten the engine’s
service life.
Be sure to check the
engine on a level
surface with the engine
stopped.
Figure 9-1: The major components of the engine. The shroud on your engine may differ.
Starter
Grip
Oil Fill Cap
Oil Drain
Muffler Spark Plug
* 1P65 Engine Shown
Fuel Cap
Air Cleaner
-30º -20º
10w
20w
20
30
40
20w40, 20w50
15w40, 15w50
10w40
10w30
-10º 0º
0º 20º 40º 60º 80º 100º
10º 20º 30º 40º
-20º
(ºC)
(ºF)
1
2

17
Check Oil Level
IMPORTANT: Be sure to check the engine on a level
surface with the engine stopped.
1. Remove the oil filler cap and wipe the dipstick clean.
See Figure 9-2.
2. Insert the dipstick into the oil filler neck, but do not
screw it in.
3. If the level is low, slowly add oil to the upper limit on
the dipstick.
4. Tighten dipstick firmly before starting engine.
IMPORTANT: Do not overfill. Overfilling with oil may
cause smoking, hard starting, spark plug fouling, or oil
saturation of air cleaner.
Fuel Recommendations
Use automotive gasoline (Unleaded or lowleaded to
minimize combustion chamber deposits). Never use an
oil/gasoline mixture or dirty gasoline. Avoid getting dirt,
dust, or water in the fuel tank.
WARNING: Gasoline is extremely flam-
mable and is explosive under certain
conditions.
Refuel in a well-ventilated area with the engine
stopped. Do not smoke or allow flames or sparks
in the area where the engine is refueled or where
gasoline is stored.
Do not overfill the fuel tank (there should be no fuel
in the filler neck). After refueling, make sure the tank
cap is closed properly and securely.
Be careful not to spill fuel when refueling. Spilled
fuel or fuel vapor may ignite. If any fuel is spilled,
make sure the area is dry before starting the engine.
Avoid repeated or prolonged contact with skin or
breathing of vapor.
Check Fuel Level
1. Clean around fuel fill before removing cap to fuel.
2. Fill tank to approximately one inch below lowest
portion of neck to allow for fuel expansion. Be careful
not to overfill.
IMPORTANT: Before refueling, allow engine to cool two
minutes.
Starting The Engine
WARNING: Always keep hands and
feet clear of equipment moving parts.
Do not use a pressurized starting fluid.
Vapors are flammable.
1. Pull out the choke knob located on the left side of the
upper handle. See Figure 9-3.
9
Operating
Your
Engine
WARNING
Always keep hands
and feet clear of equip-
ment moving parts. Do
not use a pressurized
starting fluid. Vapors
are flammable.
IMPORTANT: Do not
allow the starter grip to
snap back against the
engine. Return it gently
to prevent damage to
the starter.
NOTE: Use of the choke may not be necessary if the
engine is warm or the air temperature is high.
2. Standing behind the mower, depress the blade control
and hold it against the upper handle.
3. Pull the starter grip lightly until resistance is felt,
then pull rapidly to overcome compression, prevent
kickback and start engine. Repeat if necessary.
IMPORTANT: Do not allow the starter grip to snap
back against the rope guide. Return it gently to prevent
damage to the starter.
4. When engine warms up, push in the choke knob.
Stopping The Engine
1. Release the blade control.
Figure 9-2: Checking the oil level.
Figure 9-3: Starting the mower. (Your mower may differ from
that shown)
Upper Level
Oil Fill Cap/
Dipstick
3
2
1
4

18
Oil Change
IMPORTANT: Be sure to check engine on a level surface
with the engine stopped. Drain the oil while the engine is
still warm to assure rapid and complete draining.
1. Remove oil fill cap and drain oil by either removing
drain plug or turning mower on its side (air cleaner side
up) and allowing oil to drain into a suitable container.
See Figure 10-1.
WARNING: Before tipping engine or
equipment to drain oil, drain fuel from
tank by running engine until fuel tank is
empty.
2. Reinstall the drain plug (if removed), and tighten it
securely.
3. Refill with the recommended oil (see Operation
section) and check the oil level. See Figure 10-1.
4. Reinstall the oil fill cap securely.
10
Maintaining
Your
Engine
WARNING
Shut off the engine
before performing any
type of maintenance.
To prevent accidental
start-up, disconnect
the spark plug boot.
WARNING: Shut off the engine before
performing any maintenance. To
prevent accidental start-up, disconnect
the spark plug boot.
IMPORTANT: If engine must be tipped to transport
equipment or to inspect or remove grass, keep spark
plug side of engine up. Transporting or tipping engine
spark plug down may cause smoking, hard starting,
spark plug fouling, or oil saturation of air cleaner.
Periodic inspection and adjustment of the engine is
essential if high level performance is to be maintained.
Regular maintenance will also ensure a long service life.
The required service intervals and the kind of mainte-
nance to be performed are described in the table below.
Follow the hourly or calendar intervals, whichever occur
first. More frequent service is required when operating in
adverse conditions.
Maintenance Schedule
† Service more frequently when used in dusty areas.
†† If operating under heavy load or high ambient temperature.
Oil Service
• Check oil level regularly.
• Be sure correct oil level is maintained. Check every
five hours or daily before starting engine. See oil
checking procedure in the Operation section.
Before tipping engine
or equipment to
drain oil, drain fuel
from tank by running
engine until fuel tank
is empty.
IMPORTANT: Be sure
to check engine on a
level surface with the
engine stopped. Drain
the oil while the engine
is still warm to assure
rapid and complete
draining.
Check Engine
Oil
First 5 hours
Tasks Each use or
every 5 hours
Every season
or 25 hours
Every season
or 50 hours
Every season
or 100 hours
Service Dates
Change Engine
Oil
Check Air
Cleaner
Service Air
Cleaner
Check Spark
Plug
Service Spark
Plug
Clean Finger
Guard
Clean Around
Muffler
Level
Oil Fill Cap
Drain
Plug
Figure 10-1: Changing the oil.

19
Spark Plug Service
WARNING: DO NOT check for spark
with spark plug removed. DO NOT crank
engine with spark plug removed.
To ensure proper engine operation, the spark plug must
be properly gapped and free of deposits.
1. Remove the spark plug boot and use a spark plug
wrench to remove the plug. See Figure 10-3.
WARNING: If the engine has been
running, the muffler will be very hot. Be
careful not to touch the muffler.
2. Visually inspect the spark plug. Discard the spark plug
if there is apparent wear, or if the insulator is cracked
or chipped. Clean the spark plug with a wire brush if it
is to be reused.
IMPORTANT: Used motor oil may cause skin cancer
if repeatedly left in contact with the skin for prolonged
periods. Although this is unlikely unless you handle used
oil on a daily basis, it is still advisable to thoroughly wash
your hands with soap and water as soon as possible
after handling used oil.
NOTE: Please dispose of used motor oil in a manner that
is compatible with the environment. We suggest you take
it in a sealed container to your local service station for
reclamation. Do not throw it in the trash or pour it on the
ground.
Air Cleaner Service
A dirty air cleaner will restrict air flow to the carburetor.
To prevent carburetor malfunction, service the air cleaner
regularly. Service more frequently when operating the
engine in extremely dusty areas.
WARNING: Never use gasoline or low
flash point solvents for cleaning the
air cleaner element. A fire or explosion
could result.
IMPORTANT: Never run the engine without the air
cleaner. Rapid engine wear will result.
1. Remove the wing bolt and the air cleaner cover.
Remove the elements and separate them. See Figure
10-2. Carefully check both elements for holes or tears
and replace if damaged.
2. Foam element: Wash the element in a solution of
household detergent and warm water, then rinse
thoroughly, or wash in nonflammable or high flash
point solvent. Allow the element to dry thoroughly.
Soak the element in clean engine oil and squeeze out
the excess oil. The engine will smoke during initial
start-up if too much oil is left in the foam.
3. Paper element: Tap the element lightly several times
on a hard surface to remove excess dirt, or blow
compressed air through the filter from the inside out.
Never try to brush the dirt off; brushing will force
dirt into the fibers. Replace the paper element if it is
excessively dirty.
10
Maintaining
Your
Engine
WARNING
Never use gasoline
or low flash point sol-
vents for cleaning the
air cleaner element.
A fire or explosion
could result.
DO NOT check for
spark with spark plug
removed. DO NOT
crank engine with
spark plug removed.
If the engine has
been running, the
muffler will be very
hot. Be careful not to
touch the muffler.
Figure 10-2: Servicing the air cleaner.
Figure 10-3: The spark plug and boot.
Paper Element
Foam Element
Spark Plug
Spark Plug Boot

20
3. Measure the plug gap with a feeler gauge. Correct
as necessary by bending side electrode. See Figure
10-4. The gap should be set to 0.030 in.
4. Check that the spark plug washer is in good condi-
tion and thread the spark plug in by hand to prevent
cross-threading.
5. After the spark plug is seated, tighten with a spark
plug wrench to compress the washer.
NOTE: When installing a new spark plug, tighten 1/2
turn after the spark plug seats to compress the washer.
When reinstalling a used spark plug, tighten 1/8-1/4 turn
after the spark plug seats to compress the washer.
IMPORTANT: The spark plug must be securely tight-
ened. An improperly tightened spark plug can become
very hot and may damage the engine.
Clean Engine
If the engine has been running, allow it to cool for at
least half an hour before cleaning. Periodically remove
grass and dirt build-up from engine. Clean finger guard
and around muffler. Clean with a brush or compressed
air.
IMPORTANT: Do not spray engine with water to clean
because water could contaminate fuel. Using a garden
hose or pressure washing equipment can also force
water into the air cleaner or muffler opening. Water in
the air cleaner will soak the paper element, and water
that passes through the element or muffler can enter the
cylinder, causing damage.
WARNING: Accumulation of debris
around muffler could cause a fire.
Inspect and clean before every use.
Storage
Engines stored over 30 days need to be drained of fuel
to prevent deterioration and gum from forming in fuel
system or on essential carburetor parts. If the gasoline in
your engine deteriorates during storage, you may need to
have the carburetor, and other fuel system components,
serviced or replaced.
1. Remove all fuel from tank by running engine until it
stops from lack of fuel.
2. Change oil. See Oil Change section.
3. Remove spark plug and pour about 1/2 an ounce of
engine oil into cylinder. Replace spark plug and crank
slowly to distribute oil.
4. Clean grass and debris from around engine, under
finger guard, and under, around and behind muffler.
Touch up any damaged paint, and coat other areas
that may rust with a light film of oil.
5. Store in a clean, dry and well ventilated area away from
any appliance that operates with a flame or pilot light,
such as a furnace, water heater, or clothes dryer. Also
avoid any area with a spark producing electric motor,
or where power tools are operated.
6. If possible, also avoid storage areas with high humidity,
because that promotes rust and corrosion.
7. Keep the engine level in storage. Tilting can cause fuel
or oil leakage.
Removing From Storage
1. Check your engine as described in the Pre-Operation
Check section of this manual.
2. If the fuel was drained during storage preparation, fill
the tank with fresh gasoline. If you keep a container
of gasoline for refueling, make certain it contains only
fresh fuel. Gasoline oxidizes and deteriorates over
time, causing hard starting.
3. If the cylinder was coated with oil during storage
preparation, the engine will smoke briefly at startup.
This is normal.
10
Maintaining
Your
Engine
WARNING
Accumulation of
debris around muffler
could cause a fire.
Inspect and clean
before every use.
IMPORTANT: Do not
spray engine with water
to clean because water
could contaminate fuel.
Using a garden hose
or pressure washing
equipment can also
force water into the
air cleaner or muffler
opening. Water in the
air cleaner will soak
the paper element,
and water that passes
through the element
or muffler can enter
the cylinder, causing
damage.
Figure 10-4: Measure the plug gap with a feeler gauge.
Electrode
0.030 in.