MTD 1842AVCC, 1642AVCC, 1425NAV User Manual

Operator’s Manual

42cc Gas Chain Saw

Model

MTD1425NAV
MTD1642AVCC
MTD1842AVCC

English

IMPORTANT: READ SAFETY RULES

AND INSTRUCTIONS CAREFULLY

P/N 9096-310545 © 2005

PRINTED IN TAIWAN

INTRODUCTION

S/N :

ITEM :

MODEL :

THANK YOU

Thank you for buying this quality product. This modern
outdoor power tool will provide many hours of useful
service. You will find it to be a great labor-saving device.
This operator’s manual provides you with easy-to­understand operating instructions. Read the whole
manual and follow all the instructions to keep your new
outdoor power tool in top operating condition.

PRODUCT REFERENCES, ILLUSTRATIONS
AND SPECIFICATIONS

All information, illustrations, and specifications in this
manual are based on the latest product information
available at the time of printing. We reserve the right to
make changes at any time without notice.

Copyright© 2004 MTD SOUTHWEST INC, All Rights
Reserved.

SERVICE INFORMATION

Service on this unit both within and after the warranty
period should be performed only by an authorized and
approved service dealer.

For service call 1-800-668-1238 to obtain a list of
authorized service dealers near you.

DO NOT RETURN THE UNIT TO THE RETAILER.
PROOF OF PURCHASE WILL BE REQUIRED FOR
WARRANTY SERVICE.

Before beginning, locate the unit’s model plate. It lists
the model and serial numbers of your unit. Refer to the
sample plate below and copy the information for future
reference.

TABLE OF CONTENTS

Service Information . . . . . . . . . . . . . . . . . . . . . . . . .2

Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . .3

Oil and Fuel Information

Starting/Stopping Instructions . . . . . . . . . . . . . . . .10

Operating Instructions . . . . . . . . . . . . . . . . . . . . . .11

Maintenance and Repair Instructions . . . . . . . . . . .13

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . .20

Notas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22-23

Warranty Information . . . . . . . . . . . . . . . . . . . . . . .24

. . . . . . . . . . . . . . . . . . . . . .9

SPARK ARRESTOR NOTE

NOTE: For users on U.S. Forest Land and in the
states of California, Maine, Oregon and Washington.

All U.S. Forest Land and the state of California (Public
Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal
combustion engines operated on forest brush and/or
grass-covered areas be equipped with a spark arrestor,
maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention
of fire. Check with your state or local authorities for
regulations pertaining to these requirements. Failure to
follow these requirements could subject you to liability or
a fine. This unit is factory equipped with a spark

arrestor

SERVICE DEALER to install the

. If it requires replacement, ask your LOCAL

Spark Arrestor Kit.

Copy the model and parent

part number here:

Copy the serial number

here:

Make sure you carefully read and understand this manual
before starting or operating this equipment.

THIS PRODUCT IS COVERED BY ONE OR MORE U.S.
PATENTS. OTHER PATENTS PENDING.

CALIFORNIA PROPOSITION 65 WARNING

WARNING

THE ENGINE EXHAUST FROM THIS

PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALIFORNIA

TO CAUSE CANCER, BIRTH DEFECTS

OR OTHER REPRODUCTIVE HARM.

2

RULES FOR SAFE OPERATION

The purpose of safety symbols is to attract your
attention to possible dangers. The safety symbols,

their explanations, deserve your careful attention

and
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper
accident prevention measures.

SYMBOL MEANING

SAFETY ALERT:

warning or caution. Attention is required in
order to avoid serious personal injury. May
be used in conjunction with other symbols
or pictographs.

NOTE: Advises you of information or instructions vital to

the operation or maintenance of the equipment.

Read the Operator’s Manual(s) and follow all

warnings and safety instructions.

Failure to do so can result in serious injury to the

operator and/or bystanders.

Indicates
danger,

FOR QUESTIONS, CALL 1-800-668-1238

SYMBOL MEANING

DANGER:

result in serious injury to yourself or to
others. Always follow the safety precautions
to reduce the risk of fire, electric shock and
personal injury.

WARNING:

result in injury to yourself and others.
Always follow the safety precautions to
reduce the risk of fire, electric shock and
personal injury.

CAUTION:

result in property damage or personal injury
to yourself or to others. Always follow the
safety precautions to reduce the risk of fire,
electric shock and personal injury.

Failure to obey a
safety warning will

Failure to obey a
safety warning can

Failure to obey a
safety warning may

• IMPORTANT SAFETY INSTRUCTIONS •

READ ALL INSTRUCTIONS

BEFORE OPERATING

WARNING:

quick, easy to handle and efficient tool; if
used improperly or without the due

ecautions it could become a danger

pr
tool. For pleasant and safe work,always
strictly comply with the safety rules that
follow and throughout this manual.

• Read the instructions carefully. Be familiar with the
controls and proper use of the unit.

Do not operate this unit when tired, ill or under the

•
influence of alcohol, drugs or medication.

Only responsible individuals who are familiar with the

•
instructions may operate the chain saw (no one under
the age of 16). Provide parental supervision at all times

• Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace parts that are cracked,
chipped or damaged in any way.

• Know the controls and know how to stop the chain
saw quickly.

Carry the chain saw with the engine stopped, the

•
guide bar and saw chain to the rear, and the muffler
away from your body.

•

When transporting your chain saw, use the
appropriate guide-bar scabbard (sheath).

If correctly used,
the chain saw is a

ous

WHILE OPERATING

• Keep all parts of your body away from the chain when
the engine is running.

• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill. Operate
this unit only in a well ventilated outdoor area.

• Wear safety glasses or goggles that are marked as
meeting ANSI Z87.1-1989 standards. Also wear
ear/hearing protection when operating this unit. Wear
a face or dust mask if the operation is dusty. Long
sleeve shirts are recommended.

Wear heavy, long pants, boots or safety footwear and

•
protective gloves. Do not wear loose clothing, jewelry,
short pants, sandals or go barefoot. Secure hair above
shoulder level.

• Use the unit only in daylight or good artificial light.

.

• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and
unit must be in a stable position while starting. See

Starting/Stopping

• Before you start the engine, make sure that the saw’s
chain is not contacting anything. Do not cut near
electrical cables or power lines.

• Keep all parts of your body away from the chain when
the engine is running.

Do not start cutting until you have a clear work area,

•
secure footing, and a planned retreat path from the
falling tree.

Instructions

.

3

RULES FOR SAFE OPERATION

• Do not operate a chain saw that is damaged,
improperly adjusted, or not completely and securely
assembled. Be sure that the saw’s chain stops moving
when the throttle control trigger is released.

Shut off the engine before setting the chain saw down.

•

• Use extreme caution when cutting small-sized brush
and saplings because slender material may catch the
chain saw and whip towards you or pull you off
balance.

• When cutting a limb that is under tension, be alert for
springback so that you will not be struck when the
tension in the wood fibers is released

• Do not cut through nails, rods in the tree, railroad ties
or pallets. Inspect a tree that you are going to cut for
foreign objects that could cause injury or damage to
your chain saw.

• After striking a foreign object, stop the engine and
thoroughly inspect for damage. Repair as necessary.

• Keep the handles dry, clean and free of the oil/fuel
mixture

• We do not recommend using the chain saw in a tree or
on a ladder.

• All chain saw service, other that the items listed in this
instruction manual maintenance instructions, should be
performed by competent chain saw service personnel.

• Use the right tool. Only use this chain saw for its
intended purpose, to cut wood.

• Do not overreach. Always keep proper footing and
balance.

• Always hold the unit with both hands when operating.
Keep a firm grip on all handles or grips.

• Apply chain brake prior to any repositioning of the
operator in the cutting area. As an additional safety
precaution, apply the chain brake prior to setting down
the saw.

Never touch the chain or attempt to service the saw

•
while the engine is running. Make sure all moving parts
have stopped. Allow the chain saw to cool, as the
chain can be hot.

• Check the bar and chain at frequent intervals for
proper adjustment. Make sure the bar and chain are
properly tightened and sharpened. Visually inspect for
damage. Repair any damage before restarting or
operating the chain saw.

KICKBACK SAFETY PRECAUTIONS

WARNING:

or tip of the guide bar touches an object, or
when the wood closes in and pinches the
saw chain in the cut. Tip contact in some
cases may cause a lightning-fast reverse
reaction, kicking the guide bar up and back
towards the operator. Pinching the saw chain
along the top of the guide bar may push the
guide bar rapidly back toward the operator.
Either of these reactions may cause you to
lose control of the saw , which could r esult in
serious personal injury .

Do not rely exclusively upon the safety
devices built into your saw. As a chain saw
user, you should take several steps to keep
your cutting jobs free from accident or injury.

• With a basic understanding of kickback, you can
reduce or eliminate the element of surprise. Sudden
surprise contributes to accidents. Be alert to the
potential for kickback at all times.

• Keep a good firm grip on the saw with both hands, the
right hand on the rear handle and the left hand on the
front handle, when the engine is running. Use a firm grip
with thumbs and fingers encircling the chain saw
handles. A firm grip will help you reduce kickback and
maintain control of the saw. Don’t let go.

• Make sure that the area in which you are cutting is free
from obstructions. Do not let the nose of the guide bar
contact a log, branch, fence, or any other obstruction
that could be hit while you are operating the saw.

• Always cut with the engine running at full speed. Fully
squeeze the throttle trigger and maintain a steady
cutting speed.

• Use only the correct original equipment manufacturer
replacement bars, chains and other parts and
accessories. These are available from your authorized
service dealer. Use of any unauthorized parts or
accessories could lead to serious injury to the user, or
damage to the unit, and will void your warranty.

• Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain.

• Use only the replacement guide bars and low kickback
chains specified for your saw to avoid injury.

KICKBACK may
occur when the nose

4

RULES FOR SAFE OPERATION

OTHER SAFETY PRECAUTIONS

• Do not operate a chain saw with one hand! Serious
injury to the operator, helpers, bystanders, or any
combination of these persons may result from one­handed operation. A chain saw is intended for two­handed use.

• Do not operate a chain saw if you are fatigued.

• Use safety footwear; snug-fitted clothing; protective
gloves; and eye, hearing, and head protection devices.

• Do not allow other persons to be near the chain saw
when starting or cutting with the chain saw. Keep
bystanders and animals out of the work area.

• Do not remove, damage or de-activate any of the
safety devices. Never use a damaged, modified, or
improperly repaired or assembled chain saw. Check
their proper operation regularly. Only use bars and
chains of the length indicated in the table herein.

• Never carry out operations or repairs on your own that
are other than routine maintenance. For information,
contact specialized and authorized workshops only.

• If your chain saw is no longer usable, dispose of it
properly without damaging the environment by
handing it in to your local dealer who will arrange for
its correct disposal.

• Use caution when felling a tree. Make sure you have
planned an escape path when felling, and keep all
bystanders away.

• Be alert; stop the machine if anyone enters the cutting
area, which is usually 3 to 4 feet around the operator.

• Use caution when working in a crew to avoid injury to
a fellow worker who may enter the cutting area.

• Only loan your saw to experienced users who are
completely familiar with saw operation and correct
use. Give other users this manual, which they should
read before using the saw. Provide them the operating
instructions.

Shut off the engine before setting down the saw. Do

•
not leave the engine running unattended.

• Never store the unit, with fuel in the tank, inside a
building where fumes may reach an open flame or
spark.

• Allow the engine to cool before storing or transporting
the chain saw over long distances. For example, let
the engine cool before placing the chain saw in an
automobile. Also, be sure to secure the unit while
transporting.

• Store the unit in a dry area, locked up, located up high
and located out of the reach of children to prevent
unauthorized use or damage.

• Never douse or squirt the unit with water or any other
liquid. Keep handles dry, clean and free from debris.
Clean after each use.

• Keep these instructions. Refer to them often and use
them to instruct other users. If you loan someone this
unit, also loan them these instructions.

• Do not use the unit in the rain, in a storm or in
inclement weather. Wait until the storm danger has
passed before operation of this product.

FUEL SAFETY

WARNING:

vapors can explode if ignited. Take the
following precautions:

• Store fuel only in containers specifically designed and
approved for the storage of such materials.

• Always stop the engine and allow it to cool before
filling the fuel tank. Never remove the cap of the fuel
tank, or add fuel, when the engine is hot. Never
operate the unit without the fuel cap securely in place.
Loosen the fuel tank cap slowly to relieve any pressure
in the tank.

• Add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Slowly remove the fuel
cap only after stopping engine. Do not smoke while
fueling or mixing fuel. Wipe up any spilled fuel from the
unit immediately.

• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.

• Move the unit at least 30 feet (9.1 m) from the fueling
source and site before starting the engine. Do not
smoke. Keep sparks and open flames away from the
area while adding fuel or operating the unit.

Gasoline is highly
flammable, and its

SAVE THESE

INSTRUCTIONS

5

RULES FOR SAFE OPERATION

SAFETY AND INTERNATIONAL SYMBOLS

This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.

SYMBOL MEANING

• SAFETY ALERT SYMBOL

Indicates danger, warning, or
caution. May be used in conjunction
with other symbols or pictographs.

• WARNING - READ OPERATOR'S
MANUAL

Read the Operator’s Manual(s) and
follow all warnings and safety
instructions. Failure to do so can
result in serious injury to the
operator and/or bystanders.

• WEAR EYE, HEARING AND
HARDHAT PROTECTION

WARNING: Thrown objects and

loud noise can cause severe eye
injury and hearing loss. Wear eye
protection meeting ANSI Z87.1-1989
standards and ear protection when
operating this unit. Wear a hard hat.
Use a full face shield when needed.

SYMBOL MEANING

• ON/OFF CONTROL

ON / START / RUN

• ON/OFF CONTROL

OFF OR STOP

• GUIDE BAR WARNING:

Contact of the guide bar tip with any
object should be avoided. Tip
contact may cause the guide bar to
move suddenly upward and
backward, which may cause serious
injury.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel.

• OIL

Refer to operator's manual for the
proper type of oil.

• USE BOTH HANDS

Always use both hands while
operating the chain saw. Never use
only one hand to operate the saw.

Avoid bar nose contact.

This product has been tested at a
computed kickback angle (CKA) of
no greater than 45 degrees.

6

RULES FOR SAFE OPERATION

KNOW YOUR UNIT

11

26

15

19

CHAIN SAW COMPONENTS

1. GUIDE BAR

2. SAW CHAIN

3. SAW CHAIN ADJUSTMENT SCREW

4. SPARK ARRESTER SCREEN

5. CHAIN BRAKE®LEVER /HAND GUARD

6. FRONT HANDLE

7. STARTER HANDLE

8. SPARK PLUG
AIR CLEANER COVER

9.
STOP SWITCH

10.

11. SAFETY LATCH

12. OIL TANK CAP

13. STARTER COVER

14. FUEL TANK CAP

15. REAR HANDLE / BOOT LOOP

16. PRIMER BULB

17. BLUE CHOKE LEVER
BAR RETAINING NUT

18.
THROTTLE / TRIGGER

19.

20. CHAIN CATCHER

21. MUFFLER SHIELD

22. CLUTCH COVER

23. BUCKING SPIKE

24. CLUTCH COVER RETAINING SCREW

25. SCREWDRIVER / WRENCH
CARRY CASE (Available on some models)

26.

2

25

17

24

6

1

8

9

22

4

23

12

21

5

3

18

20

13

7

10

16

14

SAFETY FEATURES

Numbers preceding the descriptions correspond with the
numbers above to help you locate the safety feature.

2 LOW KICKBACK SAW CHAIN helps significantly

reduce kickback, or the intensity of kickback, due to
specially designed depth gauges and guard links.

4 SPARK ARRESTER SCREEN retains carbon and

other flammable particles over 0.023 inches (0.6mm)
in size from engine exhaust flow. Compliance with
local, state and federal laws and/or regulations
governing the use of a spark arrester screen is the
user’s responsibility. See Safety Precautions for
additional information.

5 CHAIN BRAKE

operator’s left hand in the event it slips off the front
handle while saw is running.

CHAIN BRAKE

5

reduce the possibility of injury due to kickback by
stopping a moving saw chain in milliseconds. It is
activated by the CHAIN BRAKE®lever.

10 STOP SWITCH immediately stops the engine when

tripped. Stop switch must be pushed to ON position
to start or restart engine.

11 SAFETY LATCH prevents accidental acceleration of

the engine. Throttle trigger (19) cannot be squeezed
unless the safety latch is depressed.

CHAIN CATCHER reduces the danger of injury in the

20

event saw chain breaks or derails during operation.
The chain catcher is designed to intercept a whipping
chain.

®

LEVER / HAND GUARD protects the

®

is a safety feature designed to

7

RULES FOR SAFE OPERATION

KICKBACK SPECIFICS

WARNING:

control of the chain saw and result in serious
or fatal injury to the saw operator or to
anyone standing close by . Always be alert.
Rotational kickback and pinch-kickback are
major chain saw operational dangers and
the leading cause of most accidents.

Beware of:

Rotational Kickback

A

A

A = Kickback path
B = Kickback reaction zone

Fig. 1

Kickback can lead
to dangerous loss of

B

A

KICKBACK SPECIFICS

Beware of:

Pinch Kickback (The push and pull reactions)

A

B

B

A = Pull
B = Solid objects
C = Push

C

Fig. 2

KICKBACK may occur when the NOSE or TIP of the
guide bar touches an object, or when wood closes in and
pinches the saw chain in the cut.

Tip contact in some cases may cause a lightning-fast
reverse reaction, kicking the guide bar up and back
toward the operator.

PINCHING the saw chain along the BOTTOM of the
guide bar may PULL the saw forward away from the
operator. PINCHING the saw chain along the TOP of the
guide bar may PUSH the guide bar rapidly back toward
the operator.

Any of these reactions may cause you to lose control of
the saw, which could result in serious personal injury.

8

OIL AND FUEL INFORMATION

OIL AND FUEL MIXING INSTRUCTIONS

Old and/or improperly mixed fuel are the main reasons
for the unit not running properly. Be sure to use fresh,
clean unleaded fuel. Follow the instructions carefully for
the proper fuel/oil mixture.

Definition of Blended Fuels

Today's fuels are often a blend of gasoline and
oxygenates such as ethanol, methanol, or MTBE (ether).
Alcohol-blended fuel absorbs water. As little as 1%
water in the fuel can make fuel and oil separate. It forms
acids when stored. When using alcohol-blended fuel,
use fresh fuel (less than 60 days old).

Using Blended Fuels

If you choose to use a blended fuel, or its use is
unavoidable, follow recommended precautions:

• Always use the fresh fuel mix explained in your

operator's manual

• Always agitate the fuel mix before fueling the unit

• Drain the tank and run the engine dry before storing

the unit

Using Fuel Additives

The bottle of 2-cycle oil that came with your unit
contains a fuel additive which will help inhibit corrosion
and minimize the formation of gum deposits. It is
recommended that you use our 2-cycle oil with this unit.

If unavailable, use a good 2-cycle oil designed for
air-cooled engines along with a fuel additive, such as
STA-BIL®Gas Stabilizer or an equivalent. Add 0.8 oz.
(23 ml.) of fuel additive per gallon of fuel according to the
instructions on the container. NEVER add fuel additives
directly to the unit's fuel tank.

oper engine

CAUTION:

maximum reliability, pay strict attention to
the oil and fuel mixing instructions on the
2-cycle oil container. Using improperly mixed
fuel can severely damage the engine.

For pr
operation and

Thoroughly mix the proper ratio of 2-cycle engine oil
with unleaded gasoline in a separate fuel can. Use a 40:1
fuel/oil ratio. Do not mix them directly in the engine fuel
tank. See the table below for specific gas and oil mixing
ratios.

NOTE: One gallon (3.8 liters) of unleaded gasoline mixed

with one 3.2 oz. (95 ml.) bottle of
2-cycle oil makes a 40:1 fuel/oil ratio.

+

UNLEADED GAS 2 CYCLE OIL

1 GALLON US

(3.8 LITERS)

1 LITER 25 ml

MIXING RATIO - 40:1

WARNING:

flammable. Ignited Vapors may explode.
Always stop the engine and allow it to cool
before filling the fuel tank. Do not smoke
while filling the tank. Keep sparks and open
flames at a distance from the area.

WARNING:

from fuel spray. Never operate the unit
without the fuel cap secur

WARNING:

ipe up any spilled fuel

outdoor ar
immediately
ignition for spilt fuel. Do not star
until fuel vapors dissipate.

ea. W

. Avoid creating a source of

3.2 FL. OZ.
(95 ml)

Gasoline is
extremely

Remove fuel cap
slowly to avoid injury

ely in place

Add fuel in a clean,
well ventilated

.

t the engine

NOTE: Dispose of the old fuel/oil mix in accordance to

Federal, State and Local regulations.

9

STARTING/STOPPING INSTRUCTIONS

WARNING:

Operate this unit only

in a well- ventilated
outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.

WARNING:

Never operate the saw

without the bar and
chain properly installed.

STARTING INSTRUCTIONS

1. Mix gas with oil. Fill fuel tank (A, Fig. 3) with fuel/oil
mixture. See Oil and Fuel Mixing Instructions.

2. Fill the oil tank (B) with correct chain and bar oil (Fig. 3).

3. Be certain the Chain Brake®is disengaged (C) before
starting unit (Fig. 3).

NOTE: see page 15 fig. 24.

4. Press red STOP switch to the “I” ON position (Fig. 4).

5. Pull the blue lever (D) out as far as it will go until the
blue lever stays out (Fig. 5). This advances the
throttle so you do not have to hold the trigger while
starting.

6. Fully press and release the primer bulb (E) 10 times,
slowly. Some amount of fuel should be
primer bulb (Fig. 6). If you can’t see fuel in the bulb,
press and release the bulb as many times as it takes
before you can see fuel in it.

7. Place the saw on a firm flat surface. Hold saw firmly
as shown (Fig. 7).

8.

Pull the rope with a controlled and steady motion 4
times. Then move the blue lever (D) all the way in (Fig. 6).

9. Hold saw firmly and pull rope until saw starts. This
could take 4 more pulls.

10. Let the saw warm up for 10 seconds. Depress and
release trigger (F) for idle (Fig. 6).

NOTE: In some cases due to operating conditions

11. If engine fails to start, repeat these instructions.

NOTE: When starting a warm engine:

1. make sure switch is on

2. pull blue choke all the way out and then push it back

3. push primer10x or until you see fuel in the bulb

4. pull rope until engine starts

5. depress and release trigger for idle

(altitude,temperature, etc)your chain saw may
need a slight adjustment to the idle speed.

1. locate idle adjustment screw(G). (fig. 6)

2. if saw will not idle-turn screw clockwise 1/4 to1/2

turn-saw should idle

3. If chain turns while idling turn screw

counterclockwise until chain stops.

in-This advances the throttle so you do not have to
hold trigger during starting

visible in the

STOPPING INSTRUCTIONS

1. Release the throttle trigger as soon as the cut is
completed, allowing the engine to idle. If you run the
saw at full throttle without a cutting load,
unnecessary wear can occur to the chain, bar, and
engine. It is recommended that the engine not be

operated for longer than 30 seconds at full
throttle.

2. Stop the engine before setting the saw down after
cutting.

NOTE: For emergency stopping, simply activate the

Chain Brake

®

and move the STOP switch down.

C

B

Fig. 3

Fig. 4

D

Fig. 5

G

E

F

Fig. 6

A

10

Fig. 7

OPERATING INSTRUCTIONS

FELLING

Felling is the term for cutting down a tree. Small trees up
to 6-7 inches (15-18cm) in diameter are usually cut in a
single cut. Larger trees require notch cuts. Notch cuts
determine the direction the tree will fall.

WARNING:

and cleared as necessary before cuts are
started. The retreat path should extend
back and diagonally to the rear of the
expected line of fall, as illustrated in Fig. 8.

CAUTION:

chain saw operator should keep on the
uphill side of the terrain, as the tree is likely
to roll or slide downhill after it is felled.

NOTE: Direction of fall (B) is controlled by the notching

cut. Before any cuts are made, consider the
location of larger branches and natural lean of the
tree to determine the way the tree will fall.

A retreat path (A)
should be planned

If felling a tree on
sloping ground, the

WARNING:

notched.

Make the felling cut (D) from the other side of the tree
and 1.5 - 2.0 inches (3-5 cm) above the edge of the
notch (C) (Fig. 9).

Fig. 9

Never saw completely through the trunk. Always leave a
hinge. The hinge guides the tree. If the trunk is completely
cut through, control over the felling direction is lost.

Never walk in front of
a tree that has been

B

A

Fig. 8

WARNING:

changing winds or if there is a danger to
property. Consult a tree professional.Do not
cut down a tree if there is a danger of
striking utility wires; notify the utility
company befor

Normally felling consists of 2 main cutting operations,
notching (C) and making the felling cut (D).

Start making the upper notch cut (C) on the side of the
tree facing the felling direction (E). Be sure you don t
make the lower cut too deep into the trunk.

The notch (C) should be deep enough to create a hinge
(F) of sufficient width and strength. The notch should be
wide enough to direct the fall of the tree for as long as
possible.

e making any cuts.

Do not cut down a
tree during high or

WARNING:

the area for bystanders, animals or obstacles.

Insert a wedge or felling lever in the cut well before the
tree becomes unstable and starts to move. This will
prevent the guidebar from binding in the felling cut if you
have misjudged the falling direction. Make sure no
bystanders have entered the range of the falling tree
before you push it over.

Felling Cut:

1. Use wooden or plastic wedges (G) to prevent binding
the bar or chain (H) in the cut. Wedges also control
felling (Fig. 10).

2. When diameter of wood being cut is greater than the
bar length, make 2 cuts as shown (Fig. 11).

WARNING:

hinge, the tree should begin to fall. When
tree begins to fall, remove saw from cut,
stop engine, put chain saw down, and
leave ar

ea along r

G

Fig. 10

Before making the
final cut, always recheck

As the felling cut
gets close to the

eat path (Fig. 8).

etr

H

11

OPERATING INSTRUCTIONS

Fig. 11

LIMBING

Limbing a tree is the process of removing the branches
from a fallen tree. Do not remove supporting limbs (A)
until after the log is bucked (cut) into lengths (Fig. 12).
Branches under tension should be cut from the bottom
up to avoid binding the chain saw.

When bucking on a slope, always stand on the uphill side.

1. Log supported along entire length: Cut from top
(overbuck), being careful to avoid cutting into the
ground (Fig. 13).

2. Log supported on 1 end: First, cut from bottom
(underbuck) 1/3 diameter of log to avoid splintering.
Second, cut from above (overbuck) to meet first cut
and avoid pinching (Fig. 14).

3. Log supported on both ends: First, overbuck 1/3
diameter of log to avoid splintering. Second, underbuck
to meet first cut and avoid pinching (Fig. 15).

NOTE: The best way to hold a log while bucking is to use

a sawhorse. When this is not possible, the log
should be raised and supported by the limb
stumps or by using supporting logs. Be sure the
log being cut is securely supported.

Fig. 14

A

Fig. 12

WARNING:

tree trunk.

Never cut tree limbs
while standing on a

BUCKING

Bucking is cutting a fallen log into lengths. Make sure
you have a good footing and stand uphill of the log when
cutting on sloping ground. If possible, the log should be
supported so that the end to be cut off is not resting on
the ground. If the log is supported at both ends and you
must cut in the middle, make a downward cut halfway
through the log and then make the undercut. This will
prevent the log from pinching the bar and chain. Be
careful that the chain does not cut into the ground when
bucking as this causes rapid dulling of the chain.

Fig. 15

BUCKING USING A SAWHORSE

For personal safety and ease of cutting, the correct
position for vertical bucking is essential (Fig. 16).

A. Hold the saw firmly with both hands and keep the

saw to the right of your body while cutting.

B. Keep the left arm as straight as possible.
C. Keep weight on both feet.

CAUTION:

chain and bar are being properly lubricated.

A

While the saw is
cutting, be sure the

B

Fig. 13

C

Fig. 16

12

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require

special tools or skills. If you are unsure about
these procedures take your unit to any non-road
engine repair establishment, individual or
authorized service dealer.

NOTE: Maintenance, replacement, or repair of the

emission control devices and system may be
performed by any non-road engine repair
establishment, individual or authorized service
dealer.

WARNING:

To prevent serious

injury, never perform
maintenance or repairs with unit running.
Always service and repair a cool unit.
Disconnect the spark plug wire to ensure that
the unit cannot start.

A good preventive maintenance program of regular inspection and care will increase life and improve performance of
your chain saw. This maintenance checklist is a guide for such a program.

Cleaning, adjustment, and part replacement may be required, under certain conditions, at more frequent intervals than
those indicated.

MAINTENANCE CHECKLIST

LISTES DES VERIFICATIONS D’ENTRETIEN

LISTA DE VERIFICACION DEL MANTENIMIENTO

ITEM / PIECE / PARTE

SCREWS / NUTS / BOLTS
VIS / ECROUS / BOULONS
TORNILLOS / TUERCAS / PERNOS

AIR FILTER
FILTRE A AIR
FILTRO DE AIRE

FUEL FILTER / OIL FILTER
FILTRE ESSENCE / FILTRE A HUILE
FILTRO DEL COMBUSTIBLE /
FILTRO DE ACEITE

SPARK PLUG
BOUGIE
BUJIA DE ENCENDIDO

SPARK ARRESTER SCREEN
ECRAN PARE-ETINCELLES
PANTALLA DEL PARACHISPAS

FUEL HOSES
DURITS D’ESSENCE
MANGUERAS DE COMBUSTIBLE

CHAIN BRAKE®COMPONENTS
COMPOSANTS DE CHAIN BRAKE
COMPONENTES DEL CHAIN BRAKE

*Recommended for Maintenance by an Authorized Service Center Technician.
*Il est recommandé de confier ces opérations à un technicien agréé.
*Recomendamos que el Centro de Servicio Autorizado proporcione el mantenimiento.

®

®

ACTION / ACTION / ACCION

INSPECT / TIGHTEN
INSPECTER / RESSERRER
INSPECCIONAR / APRETAR

CLEAN OR REPLACE
NETTOYER OU REMPLACER
LIMPIAR O REEMPLAZAR

REPLACE
REMPLACER

REEMPLAZAR
CLEAN / ADJUST / REPLACE

NETTOYER / REGLER / REMPLACER
LIMPIAR / AJUSTAR / REEMPLAZAR

INSPECT
INSPECTER
INSPECCIONAR

REPLACE AS REQUIRED
REMPLACER SUIVANT LES BESOINS
REEMPLAZAR SEGUN SE REQUIERA

INSPECT
INSPECTER
INSPECCIONAR

*REPLACE AS REQUIRED
*REMPLACER SUIVANT LES BESOINS
*REEMPLAZAR SEGUN SE REQUIERA

INSPECT
INSPECTER
INSPECCIONAR

*REPLACE AS REQUIRED
*REMPLACER SUIVANT LES BESOINS
*REEMPLAZAR SEGUN SE REQUIERA

EACH USE

CHAQUE

USAGE

CADA USO

✔

✔

✔

✔

HOURS OF

OPERATION

HEURES

D’OPERATION

HORAS DE OPERACION
10

20

✔

✔

✔

✔

13

MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE AND REPAIR INSTRUCTIONS

REMOVING AND INST ALLING THE GUIDE BAR

CAUTION:

USE THE ORIGINAL STYLE BAR with the oil
passage hole (A) as illustrated in Fig. 17.

1. Make sure the Chain Brake®lever is pulled back into

the DISENGAGED position (Fig. 17).

2. Remove the bar retaining nut (B1) and the screw (B2)
at rear of clutch cover (C). Remove clutch cover (C)
by pulling straight out, some force may be required.
(Fig. 18). Remove bar and chain.

3. To install bar, place the slotted end of the guide bar
over the bar bolt (F). Slide guide bar behind clutch
drum (G) until the guide bar stops (Fig. 19).

A

Fig. 17

To ensure the bar and
chain receive oil, ONLY

INSTALLING A CHAIN

WARNING:

when handling the saw chain.

1. Spread chain out in a loop with cutting edges (A)
pointing CLOCKWISE around loop (Fig. 20).

2. Slip the chain around the sprocket (B) behind the
clutch (C). Make sure the links fit between the
sprocket teeth (Fig. 21).

3. Guide the drive links into the groove (D) and around
the end of the bar (Fig. 21).

NOTE: The saw chain may droop slightly on the lower

part of bar. This is normal.

4. Pull guide bar forward until chain is snug. Ensure all
drive links are in the bar groove.

5. Install the clutch cover. Make sure the chain does
not slip off of the bar. Install the bar retaining nut
hand tight and follow tension adjustment instructions
in the next section. Replace screw at rear of clutch
cover.

NOTE: The guide bar retaining nut is installed only hand

tight at this point because saw chain adjustment
is required. Follow instructions in Saw Chain
Tension Adjustment.

Always use
protective gloves

C

B2

Fig. 18

Fig. 19

B1

Fig. 20

B

F

C

G

Fig. 21

A

D

14

SAW CHAIN TENSION ADJUSTMENT

WARNING:

when handling the saw chain.

Proper tension of saw chain is extremely important and
must be checked before starting, as well as during any
cutting operation.

Taking the time to make needed adjustments to the saw
chain will result in improved cutting performance and
prolonged chain life.

To adjust the saw chain:

1. Loosen bar nut, hold nose of guide bar up and turn
adjustment screw (D) CLOCKWISE to increase chain
tension. Turning screw COUNTERCLOCKWISE will
decrease amount of tension on chain. Ensure the cha i n
fits snugly all the way around the guide bar (Fig. 22).

Always use
protective gloves

CAUTION:

adjustment after as few as 5 cuts. This is normal
with a new chain, and the interval between
future adjustments will lengthen quickly.

CAUTION:

TIGHT, the sprocket, bar, chain, and
crankshaft bearings will wear more rapidly.
Study Fig. 23 for information concerning
correct cold tension (A), correct warm
tension (B), and as a guide for when saw
chain needs adjusdjtment (C).

A new saw chain
stretches, requiring

saw chain is TOO

LOOSE or TOO

CHAIN BRAKE MECHANICAL TEST

D

Fig. 22

2. After making adjustment, and while still holding nose
of bar in the uppermost position, tighten the bar
retaining nut securely. Chain has proper tension
when it has a snug fit all around and can be pulled
around by gloved hand.

NOTE: If chain is difficult to rotate on guide bar or if it

binds, too much tension has been applied. This
requires minor adjustment as follows:

A.

Loosen the bar retaining nut so it is finger tight.
Decrease tension by turning the bar adjustment
screw COUNTERCLOCKWISE slowly. Move chain
back and forth on bar. Continue to adjust until chain
rotates freely, but fits snugly. Increase tension by
turning bar adjustment screw CLOCKWISE.

B. When saw chain has proper tension, hold nose of bar

in uppermost position and tighten the bar retaining
nut securely.

WARNING:

reduce the possibility of injury due to
kickback; however, it cannot provide the
intended measure of protection if the saw is
operated carelessly.

Always test the Chain Brake
your saw and periodically while on the job.

Your chain saw is equipped with a Chain Brake®that
reduces possibility of injury due to kickback. The brake
is activated if pressure is applied against brake lever
when, as in the event of kickback, operator’s hand
strikes the lever. When the brake is actuated, chain
movement stops abruptly.

To Test the Chain Brake®:

1. The Chain Brake®is DISENGAGED (chain can move)

when BRAKE LEVER IS PULLED BACK AND
LOCKED (A, Fig. 24).

2. The Chain Brake®is ENGAGED (chain is stopped)

when brake lever is in forward position. You should
not be able to move chain (B, Fig. 24).

NOTE: The brake lever should snap into both positions.

If strong resistance is felt, or lever does not move
into either position, do not use your saw. Take it
immediately to a Authorized Service Center for
repair. Call 1-800-520-5520 for more information.

The purpose of the
Chain Brake

®

®

is to

before using

A

A

B

Fig. 23

B

C

Fig. 24

15

MAINTENANCE AND REPAIR INSTRUCTIONS

AIR FILTER

CAUTION:

Dust and dirt wil be drawn into engine and
damage it. Keep the air filter clean.

1. Remove the top cover (A) by loosening the cover
retaining screws. Cover will lift off (Fig. 25).

2. Lift the air filter (B) out of air-box (C) (Fig. 26).

3. Clean air filter. Wash filter in clean, warm, soapy
water. Rinse in clear, cool water. Air dry completely.

NOTE: It is advisable to have a supply of spare filters.

4. Install air filter. Install engine / air filter cover. Make
sure cover fits properly. Tighten the cover retaining
screws securely.

WARNING:

always turn your unit off and allow it to cool
before you clean or service it.

Never operate saw
without the air filter.

o avoid serious

T
personal injury ,

A

FUEL FILTER

CAUTION:

The fuel filter should be replaced after each 20
hours of use. Drain fuel tank before changing.

1. Remove the fuel tank cap.

2. Bend a piece of soft wire.

3. Reach into fuel tank opening and hook fuel line.
Carefully pull the fuel line toward the opening until
you can reach it with your fingers.

NOTE: Do not pull hose completely out of tank.

4. Lift filter (A) out of tank (Fig. 27).

5. Pull filter off with a twisting motion. Discard filter.

6. Install new filter. Insert end of filter into tank opening.
Make sure filter sits in bottom corner of tank. Use a
long handle screwdriver to aid in filter placement if
necessary.

7. Fill tank with fresh fuel / oil mixture. See Oil and Fuel
Information page 9. Install fuel cap.

Never operate saw
without the fuel filter.

A

Fig. 27

Fig. 25

B

C

Fig. 26

16

MAINTENANCE AND REPAIR INSTRUCTIONS

SPARK ARRESTER SCREEN

NOTE: A clogged spark arrester screen will dramatically

reduce engine performance.

Remove the 3 bolts (A) and pull muffler out. (Fig. 28).

1.

2. Remove the 2 screws (B) that hold the spark arrester
cover (C) (Fig. 29).

3. Discard the used spark arrester screen (D) and
replace it with a new one.

4. Reasemble the muffler components and install the
muffler to the cylinder. Tighten securely.

A

SPARK PLUG

NOTE: For efficient operation of saw engine, spark plug

must be kept clean and properly gapped.

Push STOP switch down.

1.

2. Remove air cleaner cover.

3. Disconnect the wire connector (G) from the spark plug
(H) by pulling and twisting at the same time (Fig. 30).

4. Remove spark plug with spark plug socket wrench.
DO NOT USE ANY OTHER TOOL.

WARNING:

electrodes. Grit in the engine could damage
the cylinder.

5. Check electtrode gaps with wire feeler gauge and set
gaps to .025” (.635mm) if necessary.

6. Reinstall a new spark plug.

NOTE: A resistor spark plug must be used for

replacement (part no. 9295-310502).

NOTE: This spark ignition system meets all requirements

of the Canadian Interferen-Causing Equipment
Regulations.

Do not sand blast,
scrape or clean

Fig. 28

H

A

B

G

Fig. 29

C

D

Fig. 30

CARBURETOR ADJUSTMENT

The carburetor was pre-set at the factory for optimum
performance. If further adjustments are necessary,
please take your unit to the nearest Authorized Service
Center listed in the Yellow Pages. Call 1-800-345-8746
for more information.

17

MAINTENANCE AND REPAIR INSTRUCTIONS

STORING A CHAIN SAW

CAUTION:

Never stor

saw for longer than
30 days without performing the following
procedures.

Storing a chain saw for longer than 30 days requires
storage maintenance. Unless the storage instructions are
followed, fuel remaining in the carburetor will evaporate,
leaving gum-like deposits. This could lead to difficult
starting and result in costly repairs.

1. Remove the fuel tank cap slowly to release any
pressure in tank. Carefully drain the fuel tank.

2. Start the engine and let it run until the unit stops to
remove fuel from carburetor.

3. Allow the engine to cool (approx. 5 minutes).

4. Using a spark plug wrench, remove the spark plug.

5. Pour 1 teaspoon of clean 2-cycle oil into the
combustion chamber. Pull starter rope slowly several
times to coat internal components. Replace spark
plug (Fig. 31).

NOTE: Store the unit in a dry place and away from

possible sources of ignition such as a furnace,
gas hot water heater, gas dryer, etc.

e a chain

Sprocket Tip Lubrication

CAUTION:

The spr
your new saw has

ocket tip on

been pre-lubricated at the factory. Failure to
lubricate the guide bar sprocket tip as
explained below will result in poor
performance and seizure, voiding the
manufacturer’s warranty.

Lubrication of the sprocket tip is
recommended after 10 hours of use or
once a week, which ever occurs first.
Always thoroughly clean guide bar sprocket
tip before lubrication.

The Lube Gun (optional) is recommended for applying
grease to the guide bar sprocket tip. The Lube Gun is
equipped with a needle nose tip which is necessary for
the efficient application of grease to the sprocket tip.

Fig. 31

REMOVING A UNIT FROM STORAGE

1. Remove spark plug.

2. Pull starter rope briskly to clear excess oil from
combustion chamber.

3. Clean and gap spark plug or install a new spark plug
with proper gap.

4. Prepare unit for operation.

5. Fill fuel tank with proper fuel / oil mixture. See Oil
and Fuel Information.

GUIDE BAR MAINTENANCE

Frequent lubrication of the guide bar (railed bar which
supports and carries the saw chain) sprocket tip is
required. Proper maintenance of the guide bar, as
explained in this section, is essential to keep your saw in
good working condition.

Fig. 32

To lubricate the sprocket tip:

1. Move the STOP switch down.
NOTE: It is not necessary to remove the saw chain to

2. Clean the guide bar sprocket tip.

3. Using the Lube Gun (optional), insert tip of lube gun

4.

lubricate the guide bar sprocket tip. Lubrication
can be done on the job.

into the lubrication hole and inject grease until it
appears at outside edge of sprocket tip (Fig. 32).

Rotate saw chain by hand. Repeat lubrication procedure
until the entire sprocket tip has been greased.

SAW CHAIN / BAR LUBRICATION

Adequate lubrication of the saw chain is essential at all
times to minimize friction with the guide bar.

Never starve the bar and chain of oil. Running the saw
with too little oil will decrease cutting efficiency, shorten
saw chain life, cause rapid dulling of chain, and cause
excessive wear of bar from overheating. Too little oil is
evidenced by smoke, bar discoloration or pitch build-up.

NOTE: Saw chain stretches during use, particularly when

it is new, and it will occasionally be necessary to
adjust and tighten it. New chain will require
adjustment after about 5 minutes of operation.

AUTOMATIC OILER

Your chain saw is equipped with an automatic gear driven
oiler system. The oiler automatically delivers the proper
amount of oil to the bar and chain. As the engine speed
increases, so does the oil flow to the bar pad. There is no
flow adjustment. The oil reservoir will run out at
approximately the same time as the fuel supply runs out.

18

MAINTENANCE AND REPAIR INSTRUCTIONS

GUIDE BAR MAINTENANCE:

Most guide bar problems can be prevented merely by
keeping the chain saw well maintained.

Insufficient guide bar lubrication and operating the saw
with chain that is too tight will contribute to rapid bar wear.

To help minimize bar wear, the following guide bar
maintenance procedures are recommended.

BAR WEAR - Turn guide bar frequently at regular
intervals (for example, after 5 hours of use), to ensure
even wear on top and bottom of bar.

BAR GROOVES - Bar grooves (or rails which support and
carry the chain) should be cleaned if saw has been used
heavily or if saw chain appears dirty. Rails should always
be cleaned every time saw chain is removed.

OIL PASSAGES - Oil passages on the bar should be
cleaned to ensure proper lubrication of the bar and chain
during operation.

NOTE: The condition of the oil passages can be easily

checked. If the passages are clear, the chain will
automatically give off a spray of oil within
seconds of starting the saw. Your saw is
equipped with an automatic oiler system.

CHAIN MAINTENANCE

Chain Tension

Check the chain tension frequently and adjust as often as
necessary to keep the chain snug on the bar, but loose
enough to be pulled around by hand.

Breaking in a New Saw Chain

A new chain and bar will need chain readjustment after
as few as 5 cuts. This is normal during the break-in
period, and the interval between future adjustments will
begin to lengthen quickly.

CHAIN REPLACEMENT INFORMATION

There may be other quality equivalent replacement
components for achieving kickback protection.

Bar Length Drive Links

14” Bar 49 DL
16” Bar 54 DL
18” Bar 60 DL

Part Number

6220-210803
6220-210816
6220-210805

INERTIA CHAIN BRAKE®ACTION

NOTE: THIS SAW IS EQUIPPED WITH AN INERTIA

CHAIN BRAKE. IF THE SAW KICKS BACK
WHILE IN USE, THE INERTIA OF THE MOVING
SAW WILL ACTIVATE THE BRAKE. A BRAKE
BAND AROUND THE CLUTCH DRUM
ACTIVATES AND STOPS THE MOVING CHAIN.

CHAIN BRAKE®OPERATIONAL TEST

Test the Chain Brake®periodically to ensure proper
function.

Perform a Chain Brake®test prior to initial cutting,
following extensive cutting, and definitely following any
Chain Brake®service. Test the Chain Brake:

1. Place saw on a clear, firm, flat surface.

2. Start engine.

3. Grasp the rear handle (A) with your right hand (Fig. 33).

4. With your left hand, hold the front handle (B) [not
Chain Brake

5. Squeeze the throttle trigger to 1/3 throttle, then
immediately activate the Chain Brake®lever (C) (Fig. 33).

®

lever (C)] firmly (Fig. 33).

WARNING:

removed from a loop of chain. This could
cause damage to the sprocket.

Never have more
than 3 links

Chain Lubrication

Always make sure the automatic oiler system is working
properly. Keep the oil tank filled with Genuine Factory
Parts Chain, Bar and Sprocket Oil.

Adequate lubrication of the bar and chain during cutting
operations is essential to minimize friction with the guide bar.

Never starve the bar and chain of lubricating oil. Running
the saw dry or with too little oil will decrease cutting
efficiency, shorten saw chain life, cause rapid dulling of
chain, and lead to excessive wear of bar from
overheating. Too little oil is evidenced by smoke or bar
discoloration.

Chain Sharpening

Chain sharpening requires special tools to ensure that
cutters are sharpened at the correct angle and depth. For
the inexperienced chain saw user, we recommend that
the saw chain be professionally sharpened by the
nearest Authorized Service Center. If you feel
comfortable sharpening your own saw chain, special
tools are available from your Authorized Service Center.

Activate the Chain

WARNING:

deliberately. Keep the chain from touching
anything; don’t let the saw tip forward.

6. Chain should stop abruptly. When it does,
immediately release the throttle trigger.

WARNING:

and take your unit to the nearest Authorized
Service Center for service.

7. If Chain Brake®functions properly, turn the engine off
and return the Chain Brake®to the DISENGAGED
position.

B

A

®

Brake

If chain does not
stop, tur

slowly and

n engine of

C

f

19

Fig. 33

TROUBLESHOOTING

UNIT WON’T START OR STARTS BUT WILL NOT RUN

CAUSE ACTION

Incorrect starting procedures Follow instructions in the Starting/Stopping section
Incorrect carburetor mixture adjustment setting Have carburetor adjusted by Authorized Service Center
Fouled spark plug Clean / gap or replace plug

UNIT STARTS, BUT ENGINE HAS LOW POWER

CAUSE ACTION

Fuel filter is plugged Replace the fuel filter
Incorrect lever position Move to RUN position
Dirty spark arrester screen Replace spark arrester screen.
Dirty air filter
Incorrect carburetor mixture adjustment setting Have carburetor adjusted by Authorized Service Center

ENGINE HESITATES

Remove, clean and reinstall filter.

CAUSE ACTION

Incorrect carburetor mixture adjustment setting Have carburetor adjusted by Authorized Service Center

NO POWER UNDER LOAD

CAUSE ACTION

Incorrect carburetor mixture adjustment setting Have carburetor adjusted by Authorized Service Center

RUNS ERATICALLY

CAUSE ACTION

Incorrectly gapped spark plug Clean / gap or replace plug

SMOKES EXCESSIVELY

CAUSE ACTION

Incorrect carburetor mixture adjustment setting
Incorrect fuel mixture Use properly mixed fuel (40:1 mixture)

Have carburetor adjusted by Authorized Service Center

If further assistance is required, contact your authorized service dealer.

Call 1-800-345-8746 for more information.

20

NOTES

21

MODEL MTD1425NAV

ELTTORHT ,ELBAC205013-010916

R

EHSAW

1

2

-50-BFW9

1

3

G

NIRAEB ,PAC205013-75191

EPIP LEUF405013-921926

WERCS5

2

6.

0-

6

1

/

8Y

BKKS

92

3

GNIRAEB101026-BD92

YEK FFURDOOW100013-12293

6

TNORF ,E

LD

NA

H305013

-

8

60

9

3

3Y’SSA DOR/KNAR

C

505013-82293

HSE

M

2

05013-381946Y’SSA GNISUOH RE

TRATS

8

15

0

1

3-

8

2

29

4

3

NOTSIP

205013-09

294

RIA ,RETLIF105013-252956T

UN4

2

-61/5-

BAN

953NO

TSIP ,

GNIR205013-98195

WERCS1-61/8-YBKKS966LE

EHWYLF

1

0

50

13

-

9

61

9

6

3

N

OTSIP ,RE

LL

OR

014101K-

BN9

6

WERC

S

4.1-61/8YBKKS97

6

W

ER

C

S

0

2-

5

0-BEGS

9

73

NO

TSIP ,NIPHC-5.43-01-CP97

DUORHS905013-710986Y’S

SA

ERI

W

3

0

50

1

3-

0

1

0983

GNIR

3.01-AC

9

8

F105013-27

099

WERCS81-50YBKKS99

6Y’SS

A NOIT

ING

I

HC-20

50

1

3

-8

8

29

9

3

KNA

RC ,ESAC

TUN50-BAN907ETALP EVITCUDNOC105013-150904GULP KRAPS205013-592901

F

10

5

0

13

-29291

1

TLEF105013-75191

7

Y’SSA PA

C

L

IO

7

0

20

1

3-

8

2

29

14R

EDNILY

C

MR

OW3

05013-370927

Y’SSA

GNIRP

S

415013-8229

2

4

ROTAL

OSI ,REBBUR

205013-210

9

2

1

TSUD-ITNA ,PAC805013-710937REMIRP200013-241934RECAPS505013-280931

WERCS80-40BBADS647Y’SSA PAC LEUF602013-822944WERCS06-50-BDTS941

Y’SSA MUR

D

515013-822957

GN

IRP

S

605013

-4

2

0954RO

TERU

BRA

C

,ROTA

LOSI

40

5

0

13

-

2

80

95

1

Y’SSA HCTULC825013-822967W

ERC

S55-60-BAFS964

REH

SAW GNIRPS60-BSW

66

1

TSUD-ITNA ,PAC105013-770977RETLIF305013-281974WERCS52-60-BCAS971

TUN90-CHN987Y’SSA GNISUOH565013-822984RECAPS605013-280981

Y’SSA TIK EKAR

B

715013-822997ELBAC ,R

EDLOH

30

5

01

3

-2

1

09

9

4

ROTE

R

UB

RA

C

10

5

0

13

-

78

2

99

1

TUN81-61/5-ZAN908EKOHC ,REVEL015013-411905Y/SSA RETLIF RIA015013-822902

18" BARF335013-0409
16" BAR9040-310532F

18LEVEL EKOHC ,REDLOH405013-210915TUN50-ZHN912

18" CHAIN

508012-0226

16" CHAIN

6220-210816

2

8

GNIRP

S

705013-420925WERCS526.0-41/01YBKGS92

2

REHSAW31-5.4-BFW938

ROTCENNOC201013-421935TRAP TFEL ,ELDNA

H

105013-860932

WERCS01-40-BBKKS948

EPIP LIO105013-310945ELTTORHT ,REGGIRT205013-820942

WERCS5.0-61/8YBKKS958

Y’SSA PMUP625013-822955ESAELER ,REGGIRT105013-820952

RE

PMU

B DEKIP

S105013-72

2968

REH

SAW60-BSW665 GNIRPS

405013-42

096

2

HCNERW102013-240978

ELFFAB205013-280975WERCS86.0-41/01YBKKS972

REVOC RAB412013-710988

ELFFAB105013-280985 REBBUR101013-720982

ESAC YRRAC102013-021998

Y’SSA RELFFUM465013-822995RAER ,ELDNAH205013-860992

WERCS07-60-BDXS906HCTIWS105013-220903

No. Parts No. Description No. Parts No. Description No. Parts No. Description

ELTTORHT ,ELBAC205013-010916

R

EHSAW

1

2

-50-BFW9

1

3

G

NIRAEB ,PAC205013-75191

EPIP LEUF405013-921926

WERCS5

2

6.

0-

6

1

/

8Y

BKKS

92

3

GNIRAEB101026-BD92

YEK FFURDOOW100013-122936TNORF ,ELDNAH305013-860933Y’SSA DOR/KNARC505013-82293

HSEM205013-381946

Y

’SSA GNISUOH

R

ET

RATS2

0

9

0DM-

8

2

29

4

3

NOTSIP

205013-09

294

RIA ,RETLIF105013-252956T

UN4

2-61/5-BAN953NOTSIP ,GNIR205013-98195

WERCS1-61/8-YBKKS966LEEHWYLF105013-961963NOTSIP ,RELLOR014101K-BN96

WERCS4.1-61/8YBKKS976WERCS02-50-BEGS973NOTSIP ,NIPHC-5.43-01-CP97

DUORHS905013-710986Y’SSA

ERI

W305013-01

0983

GNIR

3.01-AC

9

8

F105013-27099 WERCS91-50-BKKS996Y’SSA NOITINGIHC-105013-882993KNARC ,ESAC

REHSAW GNIRPS50-BSW607ETALP EVITCUDNOC105013-150904GULP KRAPS205013-592901

F

105013-29291

1

TUN50-BAN917Y’SSA PAC LIO

7

02013-822914REDNILYC

TLEF105013-75192

7

ETALP XIF3001DM-3409

24

ROTAL

OSI ,REBBUR

205013-210921

MROW305013-370937REMIRP200013-241934RECAPS505013-280931

TSUD-ITNA ,PAC805013-710947Y’SSA PAC LEUF602013-822944WERCS06-50-BDTS941

WERCS80-40BBADS657ETALP XIF2001DM-340954ROTERUBRAC ,ROTA

LOSI

405013-280951

Y’SSA MURD515013-822967WERCS55-60-BAFS964REHSAW GNIRPS60-BSW661

Y’SSA HCTULC825013-822977RETLIF305013-281974WERCS52-60-BCAS971

TSUD-ITNA ,PAC105013-770987Y’SSA GNISUOH115013-822984RECAPS605013-280981

TUN90-CHN997ELBAC ,REDLOH305013-210994ROTERUBRA

C

105013-782991

Y’SSA TIK EKARB715013-822908)EULB DTM( EKOHC ,REVEL015013-411905Y/SSA RETLIF RIA015013-822902

TUN81-61/5-ZAN918LEVEL EKOHC ,REDLOH405013-210915TUN50-ZHN912

RAB

1

35013-040928

ETALP XI

F1001DM-340925WERCS526.0-41/01YBKGS92

2

NIAHC308012-022638ROTCENNOC201013-421935TRAP TFEL ,ELDNA

H

105013-860932

REHSAW31-5.4-BFW948EPIP LIO105013-310945ELTTORHT ,REGGIRT205013-820942

WERCS01-40-BBKKS958Y’SSA PMUP625013-822955ESAELER ,REGGIRT105013-820952

WERCS5.0-61/8YBKKS968

REH

SAW60-BSW665 GNIRPS

405013-42

096

2

REPMUB DEKIPS105013-722978ELFFAB205013-280975WERCS86.0-41/01YBKKS972

HCNERW102013-240988ELFFAB105013-280985 REBBUR101013-720982

Y’SSA RELFFUM745013-822995RAER ,ELDNAH205013-860992

WERCS07-60-BDXS906HCTIWS105013-220903

No. Parts No. Description No. Parts No. Description No. Parts No. Description

22

PARTS LISTPARTS LIST

ELTTORHT ,ELBAC205013-010916

R

EHSAW

1

2

-50-BFW9

1

3

G

NIRAEB ,PAC205013-75191

EPIP LEUF405013-921926

WERCS5

2

6.

0-

6

1

/

8Y

BKKS

92

3

GNIRAEB101026-BD92

YEK FFURDOOW100013-12293

6

TNORF ,E

LD

NA

H305013

-

8

60

9

3

3Y’SSA DOR/KNAR

C

505013-82293

HSE

M

2

05013-381946Y’SSA GNISUOH RE

TRATS

8

15

0

1

3-

8

2

29

4

3

NOTSIP

205013-09

294

RIA ,RETLIF105013-252956T

UN4

2

-61/5-

BAN

953NO

TSIP ,

GNIR205013-98195

WERCS1-61/8-YBKKS966LE

EHWYLF

1

0

50

13

-

9

61

9

6

3

N

OTSIP ,RE

LL

OR

014101K-

BN9

6

WERC

S

4.1-61/8YBKKS97

6

W

ER

C

S

0

2-

5

0-BEGS

9

73

NO

TSIP ,NIPHC-5.43-01-CP97

DUORHS905013-710986Y’S

SA

ERI

W

3

0

50

1

3-

0

1

0983

GNIR

3.01-AC

9

8

F105013-27

099

WERCS81-50YBKKS99

6Y’SS

A NOIT

ING

I

HC-20

50

1

3

-8

8

29

9

3

KNA

RC ,ESAC

TUN50-BAN907ETALP EVITCUDNOC105013-150904GULP KRAPS205013-592901

F

10

5

0

13

-29291

1

TLEF105013-75191

7

Y’SSA PA

C

L

IO

7

0

20

1

3-

8

2

29

14R

EDNILY

C

MR

OW3

05013-370927

Y’SSA

GNIRP

S

415013-8229

2

4

ROTAL

OSI ,REBBUR

205013-210

9

2

1

TSUD-ITNA ,PAC805013-710937REMIRP200013-241934RECAPS505013-280931

WERCS80-40BBADS647Y’SSA PAC LEUF602013-822944WERCS06-50-BDTS941

Y’SSA MUR

D

515013-822957

GN

IRP

S

605013

-4

2

0954RO

TERU

BRA

C

,ROTA

LOSI

40

5

0

13

-

2

80

95

1

Y’SSA HCTULC825013-822967W

ERC

S55-60-BAFS964

REH

SAW GNIRPS60-BSW

66

1

TSUD-ITNA ,PAC105013-770977RETLIF305013-281974WERCS52-60-BCAS971

TUN90-CHN987Y’SSA GNISUOH565013-822984RECAPS605013-280981

Y’SSA TIK EKAR

B

715013-822997ELBAC ,R

EDLOH

30

5

01

3

-2

1

09

9

4

ROTE

R

UB

RA

C

10

5

0

13

-

78

2

99

1

TUN81-61/5-ZAN908EKOHC ,REVEL015013-411905Y/SSA RETLIF RIA015013-822902

18" BARF335013-0409
16" BAR9040-310532F

18LEVEL EKOHC ,REDLOH405013-210915TUN50-ZHN912

18" CHAIN

508012-0226

16" CHAIN

6220-210816

2

8

GNIRP

S

705013-420925WERCS526.0-41/01YBKGS92

2

REHSAW31-5.4-BFW938

ROTCENNOC201013-421935TRAP TFEL ,ELDNA

H

105013-860932

WERCS01-40-BBKKS948

EPIP LIO105013-310945ELTTORHT ,REGGIRT205013-820942

WERCS5.0-61/8YBKKS958

Y’SSA PMUP625013-822955ESAELER ,REGGIRT105013-820952

RE

PMU

B DEKIP

S105013-72

2968

REH

SAW60-BSW665 GNIRPS

405013-42

096

2

HCNERW102013-240978

ELFFAB205013-280975WERCS86.0-41/01YBKKS972

REVOC RAB412013-710988

ELFFAB105013-280985 REBBUR101013-720982

ESAC YRRAC102013-021998

Y’SSA RELFFUM465013-822995RAER ,ELDNAH205013-860992

WERCS07-60-BDXS906HCTIWS105013-220903

No. Parts No. Description No. Parts No. Description No. Parts No. Description

MODEL MTD1642AVCC / MTD1842AVCC

23