McCulloch 115377027 Instruction manual

ENGLISH
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ESPAÑOL
Instruction Manual
Manual de Instrucciones
Manuel d’Instructions
For Occasional Use Only
WARNING:
Read and follow all Safety Rules and Operating Instructions before
using this product. Failure to do so can result in serious injury.
ADVERTENCIA:
Lea el manual de instrucciones y siga todas las advertencias
e instrucciones de seguridad. El no hacerlo puede resultar en
lesiones graves.
AVERTISSEMENT:
McCulloch
9335 Harris Corners
Charlotte, NC 28269
McCulloch
850 Matheson Blvd. West
Mississauga, Ontario L5V 0B4
115377027 Rev. 1
5/1/10 BRW
FRANÇAIS
Lire le manuel d’instructions et bien respecter tous les avertissements et toutes les instructions de sécurité. Tout défaut de le faire
pourrait entraîner des blessures graves.
IDENTIFICATION OF SYMBOLS
WARNING! This chain saw
can be dangerous! Careless or
improper use can cause serious
or even fatal injury.
Read and understand the
instruction manual before
using the chain saw.
XX_
Always wear appropriate
ear protection, eye protection and head protection.
Measured maximum kickback value without chain
brake for the bar and chain
combination on the label.
Always use two hands when operating the chain saw.
WARNING!
Contacting 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.
Starting Reminder
Move ON/STOP switch to
the ON position.
Pull the starter rope
sharply 5 times with your
right hand.
Slowly press primer bulb
6 times.
Push the choke/fast idle
lever in to the HALF
CHOKE position.
Pull choke/fast idle lever
out to the full extent (to
the FULL CHOKE position).
Pull the starter rope sharply
with your right hand until
the engine starts.
SAFETY RULES
S Restrict the use of your saw to adult users
who understand and can follow safety
rules, precautions, and operating instructions found in this manual.
S Wear protective gear. Always use steeltoed safety footwear with non-slip soles;
snug-fitting clothing; safety chaps; heavyduty, non-slip gloves; eye protection such
as non-fogging, vented goggles or face
screen; an approved safety hard hat; and
sound barriers (ear plugs or mufflers) to
protect your hearing. Regular users
should have hearing checked regularly as
chain saw noise can damage hearing. Secure hair above shoulder length.
WARNING:
Always disconnect
spark plug wire and place wire where it cannot contact spark plug to prevent accidental
starting when setting up, transporting, adjusting or making repairs except carburetor
adjustments.
Because a chain saw is a high-speed woodcutting tool, special safety precautions must
be observed to reduce the risk of accidents.
Careless or improper use of this tool can
cause serious injury.
PLAN AHEAD
S Read this manual carefully until you completely understand and can follow all safety
rules, precautions, and operating instructions before attempting to use the unit.
2
Hearing
Protection
Snug Fitting
Clothing
Safety Shoes
MAINTAIN YOUR SAW IN GOOD
WORKING ORDER
Safety Hat
Eye
Protection
S Have all chain saw service performed by a
qualified service dealer with the exception
of the items listed in the maintenance section of this manual. For example, if improper tools are used to remove or hold the flywheel when servicing the clutch, structural
damage to the flywheel can occur and
cause the flywheel to burst.
S Make certain the saw chain stops moving
when the throttle trigger is released. For
correction, refer to CARBURETOR ADJUSTMENT.
S Never modify your saw in any way.
S Keep the handles dry, clean, and free of oil
or fuel mixture.
S Keep fuel and oil caps, screws, and fasteners securely tightened.
S Use only McCulloch accessories and replacement parts as recommended.
Heavy Duty
Gloves
Safety Chaps
S Keep all parts of your body away from the
chain when the engine is running.
S Keep children, bystanders, and animals a
minimum of 30 feet (10 meters) away from
the work area. Do not allow other people
or animals to be near the chain saw when
starting or operating the chain saw.
S Do not handle or operate a chain saw when
you are fatigued, ill, or upset, or if you have
taken alcohol, drugs, or medication. You
must be in good physical condition and mentally alert. Chain saw work is strenuous. If
you have any condition that might be aggravated by strenuous work, check with your
doctor before operating a chain saw.
S Carefully plan your sawing operation in advance. Do not start cutting until you have a
clear work area, secure footing, and, if you
are felling trees, a planned retreat path.
HANDLE FUEL WITH CAUTION
S Do not smoke while handling fuel or while
operating the saw.
S Eliminate all sources of sparks or flame in
the areas where fuel is mixed or poured.
There should be no smoking, open flames,
or work that could cause sparks. Allow engine to cool before refueling.
S Always have fire extinguishing tools available if you should need them.
S Mix and pour fuel in an outdoor area on
bare ground; store fuel in a cool, dry, well
ventilated place; and use an approved,
marked container for all fuel purposes.
Wipe up all fuel spills before starting saw.
S Move at least 10 feet (3 meters) from fueling site before starting engine.
S Turn the engine off and let saw cool in a
non-combustible area, not on dry leaves,
straw, paper, etc. Slowly remove fuel cap
and refuel unit.
S Store the unit and fuel in an area where fuel
vapors cannot reach sparks or open
flames from water heaters, electric motors
or switches, furnaces, etc.
OPERATE YOUR SAW SAFELY
S 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 one-handed operation. A chain saw is intended for
two-handed use.
S Operate the chain saw only in a well-ventilated outdoor area.
S Do not operate saw from a ladder or in a
tree.
S Make sure the chain will not make contact
with any object while starting the engine.
Never try to start the saw when the guide
bar is in a cut.
S Do not put pressure on the saw at the end
of the cut. Applying pressure can cause
you to lose control when the cut is completed.
S Stop the engine before setting the saw
down.
S Do not operate a chain saw that is damaged, improperly adjusted, or not completely and securely assembled. Always
replace bar, chain, hand guard, or chain
brake immediately if it becomes damaged,
broken or is otherwise removed.
S Hand carry saw only when engine is
stopped. Carry with muffler away from body;
guide bar and chain projecting behind you;
guide bar covered with a scabbard.
KICKBACK
WARNING: Avoid kickback which
can result in serious injury. Kickback is the
backward, upward or sudden forward motion
of the guide bar occurring when the saw
chain near the upper tip of the guide bar contacts any object such as a log or branch, or
when the wood closes in and pinches the
saw chain in the cut. Contacting a foreign object in the wood can also result in loss of
chain saw control.
S Rotational Kickback can occur when the
moving chain contacts an object at the upper tip of the guide bar. This contact can
cause the chain to dig into the object,
which stops the chain for an instant. The
result is a lightning fast, reverse reaction
which kicks the guide bar up and back toward the operator.
3
S Begin and continue cutting at full speed. If
the chain is moving at a slower speed,
there is greater chance of kickback occurring.
S Cut one log at a time.
S Use extreme caution when re-entering a
previous cut.
S Do not attempt cuts starting with the tip of
the bar (plunge cuts).
S Watch for shifting logs or other forces that
could close a cut and pinch or fall into
chain.
S Use the Reduced--Kickback Guide Bar
and Low--Kickback Chain specified for
your saw.
S Pinch-Kickback can occur when the the
wood closes in and pinches the moving
saw chain in the cut along the top of the
guide bar and the saw chain is suddenly
stopped. This sudden stopping of the
chain results in a reversal of the chain
force used to cut wood and causes the
saw to move in the opposite direction of the
chain rotation. The saw is driven straight
back toward the operator.
S Pull-In can occur when the moving chain
contacts a foreign object in the wood in the
cut along the bottom of the guide bar and the
saw chain is suddenly stopped. This sudden
stopping pulls the saw forward and away
from the operator and could easily cause the
operator to lose control of the saw.
Avoid Pinch-- Kickback:
S Be extremely aware of situations or obstructions that can cause material to pinch
the top of or otherwise stop the chain.
S Do not cut more than one log at a time.
S Do not twist the saw as the bar is withdrawn from an undercut when bucking.
Avoid Pull-- In:
S Always begin cutting with the engine at full
speed and the saw housing against wood.
S Use wedges made of plastic or wood.
Never use metal to hold the cut open.
Kickback Path
MAINTAIN CONTROL
Stand to the
left of the saw
Thumb on
underside of
handlebar
Never reverse
hand positions
Elbow locked
Avoid Obstructions
Thumb on underside of
handlebar
Clear The Working Area
REDUCE THE CHANCE OF
KICKBACK
S Recognize that kickback can happen.
With a basic understanding of kickback,
you can reduce the element of surprise
which contributes to accidents.
S Never let the moving chain contact any object at the tip of the guide bar.
S Keep the working area free from obstructions such as other trees, branches, rocks,
fences, stumps, etc. Eliminate or avoid
any obstruction that your saw chain could
hit while you are cutting. When cutting a
branch, do not let the guide bar contact
branch or other objects around it.
S Keep your saw chain sharp and properly
tensioned. A loose or dull chain can increase the chance of kickback occurring.
Follow manufacturer’s chain sharpening
and maintenance instructions. Check tension at regular intervals with the engine
stopped, never with the engine running.
Make sure the bar nuts are securely tightened after tensioning the chain.
4
S Keep a good, firm grip on the saw with both
hands when the engine is running and
don’t let go. A firm grip will help you reduce
kickback and maintain control of the saw.
Keep the fingers of your left hand encircling and your left thumb under the front
handlebar. Keep your right hand completely around the rear handle whether
your are right handed or left handed. Keep
your left arm straight with the elbow
locked.
S Position your left hand on the front handlebar so it is in a straight line with your right
hand on the rear handle when making
bucking cuts. Never reverse right and left
hand positions for any type of cutting.
S Stand with your weight evenly balanced on
both feet.
S Stand slightly to the left side of the saw to
keep your body from being in a direct line
with the cutting chain.
S Do not overreach. You could be drawn or
thrown off balance and lose control of the
saw.
S Do not cut above shoulder height. It is difficult to maintain control of saw above
shoulder height.
KICKBACK SAFETY FEATURES
CHAIN BRAKE AND CKA ANGLE
S Chain Brake, designed to stop the chain in
the event of kickback.
WARNING:
The following features
are included on your saw to help reduce the
hazard of kickback; however, such features
will not totally eliminate this danger. As a
chain saw user, do not rely only on safety devices. You must follow all safety precautions, instructions, and maintenance in this
manual to help avoid kickback and other
forces which can result in serious injury.
S Reduced--Kickback Guide Bar, designed
with a small radius tip which reduces the
size of the kickback danger zone on the
bar tip. A Reduced--Kickback Guide Bar
has been demonstrated to significantly reduce the number and seriousness of kickbacks when tested in accordance with
safety requirements for gasoline powered
chain saws as set by ANSI B175.1.
WARNING: WE DO NOT REPRESENT AND YOU SHOULD NOT ASSUME THAT THE CHAIN BRAKE WILL
PROTECT YOU IN THE EVENT OF A KICKBACK. Kickback is a lightning fast action
which throws the bar and rotating chain back
and up toward the operator. Kickback can be
caused by allowing contact of the bar tip in the
danger zone with any hard object. Kickback
can also be caused by pinching the saw chain
along the top of the guide bar. This action may
push the guide bar rapidly back toward the operator. Either of these events may cause you
to lose control of the saw which could result in
serious injury or even death. DO NOT RELY
UPON ANY OF THE DEVICES BUILT INTO
YOUR SAW. YOU SHOULD USE THE SAW
PROPERLY AND CAREFULLY TO AVOID
KICKBACK. Reduced--kickback guide bars
and low--kickback saw chains reduce the
chance and magnitude of kickback and are
recommended. Your saw has a low kickback
chain and bar as original equipment. Repairs
on a chain brake should be made by an authorized servicing dealer. Take your unit to the
place of purchase if purchased from a servicing dealer, or to the nearest authorized master
service dealer.
S Tip contact in some cases may cause a lightning fast reverse REACTION, kicking guide
bar up and back toward operator.
S Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly
back toward the operator.
S Either of these reactions may cause you to
lose control of the saw which could result in
serious injury. Do not rely exclusively upon
devices built into your saw.
Reduced Kickback Symmetrical Guide Bar
Small Radius Tip
Symmetrical Guide Bar
Large Radius Tip
S Low--Kickback Chain, designed with a
contoured depth gauge and guard link
which deflect kickback force and allow
wood to gradually ride into the cutter. Low-Kickback Chain has met kickback performance requirements when tested on a
representative sample of chain saws below 3.8 cubic inch displacement specified
in ANSI B175.1--2000.
WARNING:
Computed kickback
angle (CKA) listed on your saw and listed in the
CKA table below represents angle of kickback
your bar and chain combinations will have
when tested in accordance with CSA (Canadian Standards Association) and ANSI standards. When purchasing replacement bar and
chain, considerations should be given to the
lower CKA values. Lower CKA values represent safer angles to the user, higher values indicate more angle and higher kick energies.
Computed angles represented indicate total
energy and angle associated without activation
of the chain brake during kickback. Activated
angle represents chain stopping time relative to
activation angle of chain break and resulting
kick angle of saw. In all cases lower CKA values represent a safer operating environment
for the user.
The following guide bar and chain combinations meet kickback requirements of CSA
Standards Z62.1, Z62.3, & ANSI B175.1 when
used on saws listed in this manual. Use of bar
and chain combinations other than those listed
is not recommended and may not meet the
CKA requirements per standard.
Contoured Depth Gauge
Elongated Guard Link
Deflects
kickback force
and allows wood
to gradually ride
into cutter
Low--- Kickback
Chain
Can Obstruct Material
Not a Low--- Kickback Chain
S Front Hand Guard, designed to reduce the
chance of your left hand contacting the chain
if your hand slips off the front handlebar.
S Position of front and rear handlebars, designed with distance between handles and
“in-line” with each other. The spread and
“in-line” position of the hands provided by
this design work together to give balance
and resistance in controlling the pivot of
the saw back toward the operator if kickback occurs.
5
Computed kickback angle (CKA) Table
BAR
MODEL
P/N
Length
CHAIN P/N
CKA without chain brake
MC4218AV
530044693
18″
530051478
33_
NOTE: If this saw is to be used for com-
SPECIAL NOTICE: Your saw is equipped
mercial logging, a chain brake is required
and shall not be removed or otherwise disabled to comply with Federal OSHA Regulations for Commercial Logging.
with a temperature limiting muffler and spark
arresting
screen
which
meets
the
requirements of California Codes 4442 and
4443. All U.S. forest land and the states of
California, Idaho, Maine, Minnesota, New
Jersey, Oregon, and Washington require by
law that many internal combustion engines to
be equipped with a spark arresting screen. If
you operate a chain saw in a state or locale
where such regulations exist, you are legally
responsible for maintaining the operating
condition of these parts. Failure to do so is a
violation of the law. Refer to the SERVICE
section for maintenance of the spark arresting
screen. Failure to follow all Safety Rules and
Precautions can result in serious injury. If
situations occur which are not covered in this
manual, use care and good judgement. If you
need assistance, contact your authorized
service dealer or call 1-800--554--6723.
STANDARDS: This saw is listed by Underwriter’s Laboratories, Inc., in accordance with:
ANSI B175.1-- 2000 American National
Standards for Gasoline--Powered Chain
Saws -- Safety Requirements
CSA Z62.1-- 03 Chain Saws -- Occupational
Health and Safety
CSA Z62.3-- 04 Chain Saw Kickback Occupational Health and Safety
WARNING: The engine exhaust
from this product contains chemicals known
to the State of California to cause cancer,
birth defects or other reproductive harm.
SAFETY NOTICE: Exposure to vibrations
through prolonged use of gasoline powered
hand tools could cause blood vessel or nerve
damage in the fingers, hands, and joints of
people prone to circulation disorders or
abnormal swellings. Prolonged use in cold
weather has been linked to blood vessel
damage in otherwise healthy people. If
symptoms occur such as numbness, pain,
loss of strength, change in skin color or texture,
or loss of feeling in the fingers, hands, or joints,
discontinue the use of this tool and seek
medical attention. An anti-vibration system
does not guarantee the avoidance of these
problems. Users who operate power tools on
a continual and regular basis must monitor
closely their physical condition and the
condition of this tool.
ASSEMBLY
Protective gloves (not provided) should be
worn during assembly.
ATTACHING THE BAR & CHAIN (If not
already attached)
WARNING: If received assembled,
repeat all steps to ensure your saw is properly
assembled and all fasteners are secure. Always wear gloves when handling the chain.
The chain is sharp and can cut you even when
it is not moving!
1. Loosen and remove the bar nuts and the
clutch cover from the saw.
2. Remove the plastic shipping spacer (if
present).
Clutch cover
Bar nuts
Location of
shipping
spacer
Chain adjustment tool
(Bar Tool)
3. An adjusting pin and screw is used to adjust the tension of the chain. It is very important when assembling the bar, that the
pin located on the adjusting screw aligns
into a hole in the bar. Turning the screw will
move the adjustment pin up and down the
screw. Locate this adjustment before you
begin mounting the bar onto the saw. See
following illustration.
6
Inside
view of
clutch
cover
Clutch
Cover
Adjustment located on clutch cover
4. Turn the adjusting screw by hand counterclockwise until the adjusting pin just
touches the stop. This should allow the
pin to be near the correct position.
5. Slide guide bar on bar bolts until guide
bar stops against clutch drum sprocket.
Adjusting Pin Lower
Hole
Guide Bar
12. Install bar nuts and finger tighten only.
Once the chain is tensioned, you will
need to tighten bar nuts.
CHAIN TENSION
(Including units with chain already installed)
WARNING: Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
NOTE: When adjusting chain tension,
make sure the bar nuts are finger tight only.
Attempting to tension the chain when the bar
nuts are tight can cause damage.
Bar bolts
Guide bar
6. Carefully remove the chain from the package. Hold chain with the drive links as
shown.
Checking the tension:
Use the screwdriver end of the chain adjustment tool (bar tool) to move chain around guide
bar. If the chain does not rotate, it is too tight. If
the chain is too loose, it will sag below the bar.
Tip of
Bar
Guide
Bar
CUTTERS MUST FACE IN
DIIRECTION OF ROTATION
Cutters
Depth Gauge
Bar Nuts
Chain Adjustment
Tool
(Bar Tool)
Adjusting the tension:
Chain tension is very important. Chains
stretch during use. This is especially true
during the first few times you use your saw.
Always check chain tension each time before you start the chain saw.
1. Loosen bar nuts until they are finger tight
against the clutch cover.
2. Turn adjusting screw clockwise until chain
solidly contacts bottom of guide bar rail.
Drive Links
7. Place chain over and behind the clutch
retainer, fitting the drive links in the
clutch drum sprocket.
8. Fit bottom of drive links between the
teeth in the sprocket in the nose of the
guide bar.
9. Fit chain drive links into bar groove.
10. Pull guide bar forward until chain is snug
in guide bar groove. Ensure all drive
links are in the bar groove.
11. Now, install clutch cover making sure
the adjusting pin is positioned in the lower hole in the guide bar. Remember this
pin moves the bar forward and backward as the screw is turned.
Adjusting
Screw
7
3. Using bar tool, roll chain around guide bar
to ensure all links are in bar groove.
7. If chain does not rotate, it is too tight.
Slightly loosen bar nuts and loosen
chain by turning the adjusting screw.
Retighten bar nuts.
8. If chain is too loose, it will sag below the
guide bar. DO NOT operate the saw if
the chain is loose.
NOTE: The chain is tensioned correctly
when the weight of the chain does not cause it
to sag below the guide bar (with the chain saw
sitting in an upright position), but the chain still
moves freely around the guide bar.
4. Lift up tip of guide bar to check for sag.
Release tip of guide bar, then turn adjusting screw 1/4 turn clockwise. Repeat
until sag does not exist.
Adjusting Screw -- 1/4 Turn
5. While lifting tip of guide bar, tighten bar
nuts securely with the bar tool.
WARNING: If the saw is operated
with a loose chain, the chain could jump off the
guide bar and result in serious injury to the operator and/or damage the chain making it unusable. If the chain jumps off the guide bar, inspect each drive link for damage. Damaged
chain must be repaired or replaced.
Bar Nuts
6. Use the screwdriver end of the bar tool
to move chain around guide bar.
OPERATION
KNOW YOUR CHAIN SAW
READ THIS INSTRUCTION MANUAL AND SAFETY RULES BEFORE OPERATING YOUR
CHAIN SAW. Compare the illustrations with your unit to familiarize yourself with the location of
the various controls and adjustments. Save this manual for future reference.
Chain
Adjustment Tool
(Bar Tool)
Chain
Bar
Sprocket
Hole
Front Handle
Front Hand Guard
Starter Rope
ON/STOP
Choke/
Switch
Fast Idle
Lever
Muffler
Bar Oil Fill Cap
Starter Housing
Cylinder Cover
Primer Bulb
Chain
Brake
Throttle
Lockout
Rear
Handle
Throttle
Trigger
Fuel Mix Fill Cap
Chain
Direction
of Travel
Adjusting Screw
Clutch Cover
Chain
Catcher
Bar Nuts
ON/STOP SWITCH
The ON/STOP SWITCH is used to stop the
engine.
Guide Bar
THROTTLE TRIGGER
8
The THROTTLE TRIGGER controls engine
speed.
THROTTLE LOCK--OUT
CHAIN BRAKE
The THROTTLE LOCK--OUT must be
pressed before you can squeeze the throttle
trigger. This feature prevents you from accidentally squeezing the trigger.
The chain brake is a device designed to stop
the chain if kickback occurs. The chain brake
activates automatically in the event of kickback. The chain brake activates manually if the
front hand guard is pushed forward. The chain
brake is disengaged by pulling the front hand
guard back toward the front handle as far as
possible.
CHOKE/FAST IDLE LEVER
The choke and fast idle are set by pulling the
CHOKE/FAST IDLE LEVER out to the full extent for cold starting or after refueling. The
choke provides additional fuel to the engine
during cold starting.
CHAIN TENSION
It is normal for a new chain to stretch during the
first 15 minutes of operation. You should check
your chain tension each time before you start
the chain saw. See CHAIN TENSION under
the ASSEMBLY section.
PRIMER BULB
The PRIMER BULB circulates fuel to the carburetor to provide quicker starting.
FUEL REQUIREMENTS
WARNING: If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury to
the operator and/or damage the chain making it unusable.
This engine requires the use of minimum 87
octane [R+M]/2 clean gasoline.
IMPORTANT
Use of alcohol blended fuels (called gasohol or
using ethanol or methanol) can cause major
engine performance and durability problems.
BEFORE STARTING ENGINE
WARNING: Muffler is very hot during and after use. Do not touch the muffler or
allow combustible material such as dry
grass or fuel to do so.
WARNING: Alternative fuels (not
gasoline) such as E--15 (15% alcohol), E--20
(20% alcohol), E--85 (85% alcohol) are NOT
classified as gasoline and are NOT approved
for use in 2--stroke gasoline engines. Use of alternative fuels will cause problems such as: improper clutch engagements, overheating, vapor lock, power loss, lubrication deficiency,
deterioration of fuel lines, gaskets and internal
carburetor components, etc. Alternative fuels
cause high moisture absorption into the fuel/oil
mixture leading to oil and fuel separation.
WARNING: Be sure to read the fuel
handling information in the safety rules section of this manual before you begin. If you do
not understand the fuel handling information
do not attempt to fuel your unit. Seek help
from someone that does understand the information or call the customer assistance
help line at 1-800-554-6723.
BAR AND CHAIN LUBRICATION
FUELING ENGINE
WARNING:
ly when refueling.
The bar and chain require continuous lubrication. Lubrication is provided by the automatic oiler system when the oil tank is kept
filled. Lack of oil will quickly ruin the bar and
chain. Too little oil will cause overheating
shown by smoke coming from the chain and/
or discoloration of the bar.
In freezing weather oil will thicken, making it
necessary to thin bar and chain oil with a
small amount (5 to 10%) of #1 Diesel Fuel or
kerosene. Bar and chain oil must be free
flowing for the oil system to pump enough oil
for adequate lubrication.
If bar and chain oil is not available, use a
good grade SAE 30 oil.
S Never use waste oil for bar and chain lubrication.
S Always stop the engine before removing
the oil cap.
Remove fuel cap slow-
HELPFUL TIP
To obtain the correct oil mix
ratio, pour 3.2 ounces of
2-- cycle synthetic oil into
one gallon of fresh gas.
This engine is certified to operate on unleaded gasoline. Before operation, gasoline
must be mixed with a good quality synthetic
2-cycle air-cooled engine oil designed to be
mixed at a ratio of 40:1. A 40:1 ratio is obtained by mixing 3.2 fluid ounces (95 ml) of oil
with 1 gallon (4 liters) of unleaded gasoline.
Pour the entire contents of the 3.2 ounce (95
ml) container of oil into 1 gallon (4 liters) of
gasoline to achieve the proper fuel mixture.
DO NOT USE automotive or marine oil.
These oils will cause engine damage. When
mixing fuel follow the instructions printed on
the container. Once oil is added to gasoline,
shake container momentarily to assure that
the fuel is thoroughly mixed. Always read
and follow the safety rules relating to fuel before fueling your unit.
CAUTION: Never use straight gasoline in
your unit. This will cause permanent engine
damage and void the limited warranty.
CHAIN BRAKE
Ensure chain brake is disengaged by pulling
the front hand guard back toward the front handle as far as possible. The chain brake must be
disengaged before cutting with the saw.
9
WARNING: The chain must not
move when the engine runs at idle speed. If
the chain moves at idle speed refer to CARBURETOR ADJUSTMENT within this
manual. Avoid contact with the muffler. A hot
muffler can cause serious burns.
To stop the engine move the ON/STOP
switch to the STOP position.
To start the engine hold the saw firmly on the
ground as illustrated. Make sure the chain is
free to turn without contacting any object.
Use only 15″ -- 18″ (40 -- 45 cm) of
rope per pull.
Hold saw firmly while pulling starter rope.
Starter Rope Handle
Left Hand
on Front
Handle
3. Pull choke/fast idle lever out to the full
extent (to the FULL CHOKE position).
4. Pull the starter rope sharply 5 times with
your right hand. Then, proceed to the
next step.
NOTE: If the engine sounds as if it is trying
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
5. Push the choke/fast idle lever in to the
HALF CHOKE position.
CHOKE/FAST IDLE LEVER
OFF
HALF
FULL
Right Foot Through Rear Handle
WARNING: Do not attempt to throw
or drop--start the chain saw. Doing so will put
the operator at risk of serious injury due to
loss of control of the chain saw.
IMPORTANT POINTS TO REMEMBER
When pulling the starter rope, do not use the full
extent of the rope as this can cause the rope to
break. Do not let starter rope snap back. Hold
the handle and let the rope rewind slowly.
For cold weather starting, start the unit at
FULL CHOKE; allow the engine to warm up
before squeezing the throttle trigger.
NOTE: Do not attempt to cut material with
the choke/fast idle lever in the FULL CHOKE
position.
HELPFUL TIP
If your engine still does not
start after following these
instructions, please call
1-- 800-- 554-- 6723.
STARTING A COLD ENGINE (or warm
engine after running out of fuel)
NOTE: In the following steps, when the
choke/fast idle lever is pulled out to the full
extent, the correct throttle setting for starting
is set automatically.
IGNITION
SWITCH
ON
STOP
Choke
Lever
1. Move ON/STOP switch to the ON position.
2. Slowly press primer bulb 6 times.
6. Pull the starter rope sharply with your
right hand until the engine starts.
7. Allow the engine to run for approximately 30 seconds. Then, squeeze and release the throttle trigger to allow engine
to return to idle speed.
STARTING A WARM ENGINE
1. Move ON/STOP switch to the ON position.
2. Slowly press primer bulb 6 times.
3. To set the fast idle, pull the choke/fast
idle lever out to the full extent (to the full
choke position); then push the lever
back in to the HALF CHOKE position.
4. Pull the starter rope sharply with your
right hand until the engine starts.
5. Squeeze and release throttle trigger to
allow engine to return to idle speed.
DIFFICULT STARTING (or starting a
flooded engine)
The engine may be flooded with too much fuel
if it has not started after 10 pulls. Flooded engines can be cleared of excess fuel by pushing
the choke/fast idle lever in completely (to the
OFF CHOKE position) and then following the
warm engine starting procedure listed above.
Ensure the ON/STOP switch is in the ON position. Starting could require pulling the starter
rope handle many times depending on how
badly the unit is flooded. If engine fails to start,
refer to the TROUBLESHOOTING TABLE or
call 1-800-554-6723.
CHAIN BRAKE
WARNING: If the brake band is
worn too thin it may break when the chain
brake is triggered. With a broken brake band,
the chain brake will not stop the chain. The
chain brake should be replaced by an authorized service dealer if any part is worn to less
than 0.020″ (0.5 mm) thick. Repairs on a
chain brake should be made by an authorized service dealer. Take your unit to the
place of purchase if purchased from a servicing dealer, or to the nearest authorized
master service dealer.
10
S This saw is equipped with a chain brake.
The brake is designed to stop the chain if
kickback occurs.
S The inertia--activated chain brake is
activated if the front hand guard is pushed
forward, either manually (by hand) or
automatically (by sudden movement).
S If the brake is already activated, it is
disengaged by pulling the front hand guard
back toward the front handle as far as
possible.
S When cutting with the saw, the chain brake
must be disengaged.
Disengaged
Engaged
Braking function control
CAUTION: The chain brake must be
checked several times daily. The engine
must be running when performing this procedure. This is the only instance when the saw
should be placed on the ground with the engine running.
Place the saw on firm ground. Grip the rear
handle with your right hand and the front handle with your left hand. Apply full throttle by
fully depressing the throttle trigger. Activate
the chain brake by turning your left wrist
against the hand guard without releasing
your grip around the front handle. The chain
should stop immediately.
Inertia activating function control
WARNING: When performing the
following procedure, the engine must be
turned off.
Grip the rear handle with your right hand and
the front handle with your left hand. Hold the
chain saw approximately 14″ (35 cm) above a
stump or other wooden surface. Release your
grip on the front handle and use the weight of
the saw to let the tip of the guide bar fall forward
and contact the stump. When the tip of the bar
hits the stump, the brake should activate.
OPERATING TIPS
S Check chain tension before first use, after
1 minute of operation, and each time before you start the chain saw. See CHAIN
TENSION in the ASSEMBLY section.
S Cut wood only. Do not cut metal, plastics,
masonry, non-wood building materials, etc.
S Stop the saw if the chain strikes a foreign
object. Inspect the saw and repair or replace parts as necessary. If the chain
jumps off the guide bar, inspect the chain
for damaged drive links before reinstalling.
Burrs on drive links, which prevent them
from entering the groove of the guide bar,
can be removed with a flat file.
S Keep the chain out of dirt and sand. Even a
small amount of dirt will dull a chain, increase
the possibility of kickback, and require chain
sharpening or replacement.
S Practice cutting a few small logs using the
following techniques to get the “feel” of using your saw before you begin a major
sawing operation.
S Squeeze the throttle trigger and allow the
engine to reach full speed before cutting.
S Begin cutting with the saw frame
against the log.
S Keep the engine at full speed the entire
time you are cutting.
S Allow the chain to cut for you. Exert only
light downward pressure. If you force
the cut, damage to the bar, chain, or engine can result.
S 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.
S To avoid losing control when cut is complete, do not put pressure on saw at end
of cut.
S Stop the engine before setting the saw
down after cutting.
TREE FELLING TECHNIQUES
WARNING: Check for broken or
dead branches which can fall while cutting
causing serious injury. Do not cut near buildings or electrical wires if you do not know the
direction of tree fall, nor cut at night since you
will not be ale to see well, nor during bad
weather such as rain, snow, or strong winds,
etc. If the tree makes contact with any utility
line, the utility company should be notified immediately.
S Carefully plan your sawing operation in advance.
S Clear the work area. You need a clear area
all around the tree so you can have secure
footing.
S The 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.
S Study the natural conditions that can cause
the tree to fall in a particular direction.
Natural conditions that can cause a tree to
fall in a particular direction include:
S The wind direction and speed.
S The lean of the tree. The lean of a tree
might not be apparent due to uneven or
sloping terrain. Use a plumb or level to determine the direction of tree lean.
S Weight and branches on one side.
S Surrounding trees and obstacles.
Look for decay and rot. If the trunk is rotted,
it can snap and fall toward the operator.
Check for broken or dead branches which
can fall on you while cutting.
Make sure there is enough room for the tree to
fall. Maintain a distance of 2-1/2 tree lengths
from the nearest person or other objects. Engine noise can drown out a warning call.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree where cuts are to
be made. Plan a clear retreat path to the rear
and diagonal to the line of fall.
11
Plan a clear retreat path
Direction of Fall
45_
FELLING LARGE TREES
(6 inches (15 cm) in diameter or larger)
The notch method is used to fell large trees.
A notch is cut on the side of the tree in the desired direction of fall. After a felling cut is
made on the opposite side of tree, the tree
will tend to fall into the notch.
NOTE: If the tree has large buttress roots,
remove them before making the notch. If using saw to remove buttress roots, keep saw
chain from contacting ground to prevent dulling of the chain.
NOTCH CUT AND FELLING THE
TREE
S Make notch cut by cutting the top of the
notch first. Cut through 1/3 of the diameter
of the tree. Next complete the notch by cutting the bottom of the notch. See illustration. Once the notch is cut remove the
notch of wood from the tree.
Final (felling) cut here, 2 inches
(5 cm) above center of notch.
First cut
Notch
Second cut
Hinge
S After removing the wood from the notch,
make the felling cut on the opposite side of
the notch. This is done by making a cut about
two inches (5 cm) higher than the center of
the notch. This will leave enough uncut wood
between the felling cut and the notch to form
a hinge. This hinge will help prevent the tree
from falling in the wrong direction.
Hinge holds tree on stump and helps
control fall
Opening of
felling cut
NOTE: Before felling cut is complete, use
wedges to open the cut if necessary to
control the direction of fall. To avoid kickback
and chain damage, use wood or plastic
wedges, but never steel or iron wedges.
S Be alert to signs that the tree is ready to fall:
cracking sounds, widening of the felling cut,
or movement in the upper branches.
S As tree starts to fall, stop saw, put it down,
and get away quickly on your planned retreat path.
S DO NOT cut down a partially fallen tree
with your saw. Be extremely cautious with
partially fallen trees that may be poorly
supported. When a tree doesn’t fall completely, set the saw aside and pull down the
tree with a cable winch, block and tackle,
or tractor.
CUTTING A FALLEN TREE
(BUCKING)
Bucking is the term used for cutting a fallen
tree to the desired log size.
WARNING: Do not stand on the log
being cut. Any portion can roll causing loss
of footing and control. Do not stand downhill
of the log being cut.
IMPORTANT POINTS
S Cut only one log at a time.
S Cut shattered wood very carefully; sharp
pieces of wood could be flung toward operator.
S Use a sawhorse to cut small logs. Never
allow another person to hold the log while
cutting and never hold the log with your leg
or foot.
S Do not cut in an area where logs, limbs,
and roots are tangled such as in a blown
down area. Drag the logs into a clear area
before cutting by pulling out exposed and
cleared logs first.
TYPES OF CUTTING USED FOR
BUCKING
WARNING:
If saw becomes
pinched or hung in a log, don’t try to force it
out. You can lose control of the saw resulting
in injury and/or damage to the saw. Stop the
saw, drive a wedge of plastic or wood into the
cut until the saw can be removed easily. Restart the saw and carefully reenter the cut. To
avoid kickback and chain damage, do not
use a metal wedge. Do not attempt to restart
your saw when it is pinched or hung in a log.
Use a wedge to remove pinched saw
Turn saw OFF and use a plastic or
wooden wedge to force cut open.
Closing
of notch
Overcutting begins on the top side of the log
with the bottom of the saw against the log.
When overcutting use light downward pressure.
12
1st Cut
Overcutting
Undercutting
2nd Cut
Undercutting involves cutting on the underside of the log with top of saw against the log.
When undercutting use light upward pressure. Hold saw firmly and maintain control.
The saw will tend to push back toward you.
Using a support stand
2nd Cut
WARNING: Never turn saw upside
down to undercut. The saw cannot be controlled in this position.
Always make your first cut on the compression side of the log. The compression side of
the log is where the pressure of the log’s
weight is concentrated.
1st Cut
1st Cut
2nd Cut
First cut on compression side of log
LIMBING AND PRUNING
Second cut
WARNING: Be alert for and guard
against kickback. Do not allow the moving
chain to contact any other branches or objects
at the nose of the guide bar when limbing or
pruning. Allowing such contact can result in
serious injury.
Second cut
First cut on compression side of log
BUCKING WITHOUT A SUPPORT
S Overcut through 1/3 of the diameter of the
log.
S Roll the log over and finish with a second
overcut.
S Watch for logs with a compression side to
prevent the saw from pinching. See illustrations for cutting logs with a compression side.
BUCKING USING A LOG OR
SUPPORT STAND
S Remember your first cut is always on the
compression side of the log.
(Refer to the illustrations below for your
first and second cut)
S Your first cut should extend 1/3 of the
diameter of the log.
S Finish with your second cut.
Using a log for support 2nd Cut
1st Cut
WARNING: Never climb into a tree to
limb or prune. Do not stand on ladders, platforms, a log, or in any position which can cause
you to lose your balance or control of the saw.
IMPORTANT POINTS
S Work slowly, keeping both hands firmly
gripped on the saw. Maintain secure footing
and balance.
S Watch out for springpoles. Springpoles are
small size limbs which can catch the saw
chain and whip toward you or pull you off balance. Use extreme caution when cutting
small size limbs or slender material.
S Be alert for springback. Watch out for
branches that are bent or under pressure.
Avoid being struck by the branch or the
saw when the tension in the wood fibers is
released.
S Keep a clear work area. Frequently clear
branches out of the way to avoid tripping
over them.
LIMBING
S Always limb a tree after it is cut down. Only
then can limbing be done safely and properly.
S Leave the larger limbs underneath the felled
tree to support the tree as you work.
S Start at the base of the felled tree and work
toward the top, cutting branches and limbs.
Remove small limbs with one cut.
S Keep the tree between you and the chain.
Cut from the side of the tree opposite the
branch you are cutting.
13
S Remove larger, supporting branches with
the cutting techniques described in BUCKING WITHOUT A SUPPORT.
S Always use an overcut to cut small and freely hanging limbs. Undercutting could cause
limbs to fall and pinch the saw.
S Next make a 2nd cut all the way through
the limb. Then cut a third overcut leaving a
1 to 2 inch (2.5 to 5 cm) collar from the truck
of the tree.
PRUNING
Second cut
Third cut
WARNING: Limit pruning to limbs
shoulder height or below. Do not cut if
branches are higher than your shoulder. Get a
professional to do the job.
S Make your first cut 1/3 of the way through the
bottom of the limb.
Collar
First cut
Pruning technique
SERVICE
WARNING:
Disconnect the spark
plug before performing maintenance except
for carburetor adjustments.
We recommend all service and adjustments
not listed in this manual be performed by an
authorized or Master Service Dealer.
HELPFUL TIP
IMPORTANT: Have all
repairs other than the recommended maintenance
described in the instruction
manual performed by an
authorized service dealer.
If any dealer other than an authorized
service dealer performs work on the
product, we may not pay for repairs under warranty. It is your responsibility to
maintain and perform general maintenance.
MAINTENANCE SCHEDULE
Check:
Fuel mixture level . . . . Before each use
Bar lubrication . . . . . . . Before each use
Chain tension . . . . . . . Before each use
Chain sharpness . . . . . Before each use
For damaged parts . . . Before each use
For loose caps . . . . . . Before each use
For loose fasteners . . . Before each use
For loose parts . . . . . . Before each use
Inspect and Clean:
Bar . . . . . . . . . . . . . . . . Before each use
Complete saw . . . . . . . After each use
Air filter . . . . . . . . . . . . . Every 5 hours*
Chain brake . . . . . . . . . Every 5 hours*
Spark arresting screen
and muffler . . . . . . . . . . Every 25 hours*
Replace spark plug . Yearly
Replace fuel filter . . . Yearly
* Hours of Operation -Each hour of operation is approximately
2 tanks of fuel.
GENERAL RECOMMENDATIONS
The warranty on this unit does not cover
items that have been subjected to operator
abuse or negligence. To receive full value
from the warranty, the operator must maintain unit as instructed in this manual. Various
adjustments will need to be made periodically to properly maintain your unit.
S Once a year, replace the spark plug, air filter,
and check guide bar and chain for wear. A
new spark plug and air filter assures proper
air-fuel mixture and helps your engine run
better and last longer.
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for replacement of damaged or worn parts.
NOTE: It is normal for a small amount of oil
to appear under the saw after engine stops.
Do not confuse this with a leaking oil tank.
S ON/STOP Switch -- Ensure ON/STOP
switch functions properly by moving the
switch to the STOP position. Make sure engine stops; then restart engine and continue.
S Fuel Tank -- Do not use saw if fuel tank
shows signs of damage or leaks.
S Oil Tank -- Do not use saw if oil tank shows
signs of damage or leaks.
CHECK FOR LOOSE
FASTENERS AND PARTS
S
S
S
S
S
S
S
S
S
Bar Nuts
Chain
Muffler
Cylinder Shield
Air Filter
Handle Screws
Vibration Mounts
Starter Housing
Front Hand Guard
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A dull
chain makes a sawdust powder and cuts
slowly. See CHAIN SHARPENING.
14
CHECK GUIDE BAR
Conditions which require guide bar maintenance:
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
S Inadequate supply of oil to bar/chain.
Check the condition of guide bar each time
chain is sharpened. A worn guide bar will
damage the chain and make cutting difficult.
After each use, ensure ON/STOP switch is
in the STOP position, then clean all sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
S Move ON/STOP switch to STOP.
S Loosen and remove bar nuts and clutch
cover. Remove bar and chain from saw.
S Clean the oil holes and bar groove after
each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a flat file.
S When rail top is uneven, use a flat file to restore square edges and sides.
File Rail Edges
and Sides
Square
CHECK CHAIN BRAKE
See CHAIN BRAKE in the OPERATION
section.
CLEAN AIR FILTER
CAUTION: Do not clean filter in gasoline or
other flammable solvent to avoid creating a
fire hazard or producing harmful evaporative
emissions.
Cleaning the air filter:
A dirty air filter decreases the life and performance of the engine and increases fuel consumption and harmful emissions. Always
clean your air filter after 10 tanks of fuel or 5
hours of operation, whichever comes first.
Clean more frequently in dusty conditions. A
used air filter can never be completely
cleaned. It is advisable to replace your air filter with a new one after every 50 hours of operation, or annually, whichever comes first.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air filter cover and air filter.
4. Clean the air filter using hot soapy water.
Rinse with clean cool water. Air dry completely before reinstalling.
5. Reinstall air filter and air filter cover.
6. Reinstall cylinder cover and 3 screws.
Tighten securely.
Cylinder
Cover
Air Filter
Cover
Air Filter
Worn Groove
Correct Groove
Replace guide bar when the groove is worn,
the guide bar is bent or cracked, or when excess heating or burring of the rails occurs. If replacement is necessary, use only the guide bar
specified for your saw in the repair parts list or
on the decal located on the chain saw.
CHECK FUEL MIXTURE LEVEL
S See FUELING ENGINE under the OPERATION section.
LUBRICATION
Bar Oil
Fill Cap
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As the unit is used, carbon deposits build up
on the muffler and spark arresting screen,
and must be removed to avoid creating a fire
hazard or affecting engine performance.
Replace the spark arresting screen if breaks
occur.
Spark
Exhaust
Arresting Outlet
Screen
Cover
S See GUIDE BAR AND CHAIN OIL under
the OPERATION section.
INSPECT AND CLEAN UNIT AND
DECALS
S After each use, inspect complete unit for
loose or damaged parts. Clean the unit and
decals using a damp cloth with a mild detergent.
S Wipe off unit with a clean dry cloth.
Muffler
15
Nut
CLEANING THE SPARK ARRESTING SCREEN
Cleaning is required every 25 hours of operation or annually, whichever comes first.
1. Loosen and remove the nut from the exhaust outlet cover.
2. Remove the exhaust oulet cover.
3. Remove spark arresting screen. Handle
screen carefully to prevent damage.
4. Clean the spark arresting screen gently
with a wire brush. Replace screen if
breaks are found.
5. Replace any broken or cracked muffler
parts.
6. Reinstall spark arresting screen, exhaust
outlet cover, and nut. Tighten nut securely.
REPLACE SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing is fixed and nonadjustable.
NOTE: This spark ignition system complies
with the Canadian standard ICES--002.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ--7Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench. Spark plug gap
should be 0.025 inch (0,6 mm).
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
WARNING: Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for chain
sharpening:
S Reduction in size of wood chips. The size
of the wood chip will decrease as the chain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not produce a good chip.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
Tools required:
S 5/32 inch (4 mm) diameter round file and
file holder
S Flat file
S Depth gauge tool
TO SHARPEN CHAIN:
1. Move ON/STOP switch to the STOP
position.
2. Check chain for proper tension. Adjust
chain tension if necessary. See CHAIN
TENSION section.
3. Sharpen cutters.
S To sharpen the cutters, position the
file holder level (90˚) so that it rests
on the top edges of the cutter and
depth gauge.
NOTE: The chain has both left and
right hand cutters.
File Holder
Cylinder
Cover
Cutter
90˚
Depth Gauge
S Align the 30˚ file holder marks parallel with the bar and to the center of the
chain.
Cutter
Spark
Plug Boot
30˚
File Holder Line
Spark
Plug
Cutter
S Sharpen cutters on one side of the
chain first. File from the inside of each
cutter to the outside. Then, turn the
chain saw around and repeat the process for the other side of the chain.
S File on the forward stroke only. Use 2
or 3 strokes per cutting edge.
S Keep all cutters the same length
when filing.
S File enough to remove any damage
to cutting edges (side plate and top
plate of cutter).
Remove Damage
All Cutters
Same Length
REPLACE FUEL FILTER
To replace fuel filter, drain your unit by running it dry of fuel. Remove fuel cap and its
connected retainer from tank. Pull filter from
tank and remove from line. Replace and reassemble.
CHAIN ADJUSTMENT
See CHAIN TENSION in ASSEMBLY section.
CHAIN SHARPENING
WARNING: Improper chain sharpening techniques and/or depth gauge maintenance will increase the chance of kickback
which can result in serious injury.
File
Top Plate
Side Plate
16
S File chain to meet the specifications
as shown.
80˚
60˚
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer or call our customer
assistance help line at 1--800--554--6723.
CARBURETOR ADJUSTMENT
30˚
Hook Angle
0.025 inch
(0.65 mm)
Right
Too Much Hook Angle
Rounded
Corner
Squared Off
Corner
Wrong
WARNING:
Maintain the proper
hook angle according to the manufacturer’s
specifications for the chain you are using. Improper hook angle will increase the chance of
kickback which can result in serious injury.
4. Check and lower depth gauges.
File
Depth Gauge Tool
Depth Gauge
S Place gauge tool on cutter.
S If the depth gauge is higher than the
depth gauge tool, file it level to the top of
the depth gauge tool.
S Maintain rounded front corner of
depth gauge with a flat file.
NOTE: The very top of the depth
gauge should be flat with the front
half rounded off with a flat file.
WARNING: The chain will be moving
during most of this procedure. Wear your protective equipment and observe all safety precautions. The chain must not move at idle
speed.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if
you notice any of the following conditions:
S Chain moves at idle. See IDLE SPEED--T
adjusting procedure.
S Saw will not idle. See IDLE SPEED--T adjusting procedure.
Idle Speed--T
Allow engine to idle. If the chain moves, idle is
too fast. If the engine stalls, idle is too slow. Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). The idle speed screw is located in the
area above the primer bulb and is labeled T.
S Turn idle screw (T) clockwise to increase
engine speed.
S Turn idle screw (T) counterclockwise to
decrease engine speed.
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer or call our customer
assistance help line at 1--800--554--6723.
COOLING SYSTEM
To keep the working temperature as low as
possible the machine is equipped with a
cooling system.
The cooling system consists of:
S Air intake on the starter
S Air guide plate
S Fins on the flywheel
S Cooling fins on the cylinder
S Cylinder cover (directs cold air over the
cylinder)
Clean the cooling system with a brush after
each use, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which
causes damage to the piston and cylinder.
STORAGE
WARNING: Perform the following
steps after each use:
S Allow the engine to cool, and secure the
unit before storing or transporting.
S Store chain saw and fuel in a well ventilated area where fuel vapors cannot reach
sparks or open flames from water heaters,
electric motors or switches, furnaces, etc.
S Store chain saw with all guards in place
and position chain saw so that any sharp
object cannot accidentally cause injury.
S Store chain saw well out of the reach of
children.
SEASONAL STORAGE
Prepare your unit for storage at the end of the
season or if it will not be used for 30 days or
more. If your chain saw is to be stored for a
period of time:
S Clean saw thoroughly before storage.
S Store in a clean dry area.
S Lightly oil external metal surfaces and
guide bar.
S Oil the chain and wrap it in heavy paper or
cloth.
17
FUEL SYSTEM
Under FUELING ENGINE in the OPERATION section of this manual, see message
labeled IMPORTANT regarding the use of
gasohol in your chain saw. Fuel stabilizer is
an acceptable alternative in minimizing the
formation of fuel gum deposits during storage. Add stabilizer to the gasoline in the fuel
tank or fuel storage container. Follow the mix
instructions found on stabilizer containers.
Run engine at least 5 minutes after adding
stabilizer.
HELPFUL TIP
During storage of your gas/
oil mixture, the oil will separate from the gas.
We recommend that you
shake the gas can weekly
to insure proper blending of
the gas and oil.
ENGINE
S Remove spark plug and pour 1 teaspoon
of 40:1, 2-cycle engine oil (air cooled)
through the spark plug opening. Slowly
pull the starter rope 8 to 10 times to distribute oil.
S Replace spark plug with new one of recommended type and heat range.
S Clean air filter.
S Check entire unit for loose screws, nuts,
and bolts. Replace any damaged, broken,
or worn parts.
S At the beginning of the next season, use
only fresh fuel having the proper gasoline
to oil ratio.
OTHER
S Do not store gasoline from one season to
another.
S Replace your gasoline can if it starts to
rust.
TROUBLESHOOTING TABLE
WARNING: Always stop unit and disconnect spark plug before performing all of
the recommended remedies below except remedies that require operation of the unit.
TROUBLE
CAUSE
REMEDY
Engine will not
start or will run
only a few
seconds after
starting.
1. Move ignition switch to ON.
2. See “Difficult Starting” in
Operation Section.
3. Fill tank with correct fuel mixture.
4. Install new spark plug.
5. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
1. Ignition switch off.
2. Engine flooded.
Engine will
not idle
properly.
1. Idle speed requires
adjustment.
2. Carburetor requires
adjustment.
1. See “Carburetor Adjustment” in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
Engine will not
accelerate,
lacks power,
or dies under
a load.
Engine
smokes
excessively.
1.
2.
3.
4.
Air filter dirty.
Spark plug fouled.
Chain brake engaged.
Carburetor requires
adjustment.
1. Too much oil mixed with
gasoline.
1.
2.
3.
4.
Chain moves
at idle speed.
1. Idle speed requires
adjustment.
2. Clutch requires repair.
1. See “Carburetor Adjustment” in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
3. Fuel tank empty.
4. Spark plug not firing.
5. Fuel not reaching
carburetor.
Clean or replace air filter.
Clean or replace plug and regap.
Disengage chain brake.
Contact an authorized service dealer.
1. Empty fuel tank and refill with
correct fuel mixture.
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LIMITED WARRANTY
McCulloch, a division of Husqvarna Consumer Outdoor Products N.A., Inc., warrants to the original consumer purchaser that
each new McCulloch brand gasoline chain
saw is free from defects in material and
workmanship and agrees to repair or replace
under this warranty any defective gasoline
chain saw as follows from the original date of
purchase.
2 YEARS - Parts and Labor, when used for
household purposes.
60 DAYS - Parts and Labor, when used for
commercial, professional, or income producing purposes.
30 DAYS - Parts and Labor, if used for rental
purposes.
This warranty is not transferable and does
not cover damage or liability caused by improper handling, improper maintenance or
alteration, or the use of accessories and/or
attachments not specifically recommended
by McCulloch for this chain saw. This warranty does not cover tune--up, spark plugs,
filters, starter ropes, chain sharpening, bars,
chains, and other parts which wear and require replacement with reasonable use during the warranty period. This warranty does
not cover predelivery setup, installation of
guide bar and chain, and normal adjustments explained in the instruction manual
such as chain tension adjustments. This
warranty does not cover transportation
costs.
In the event you have a claim under this warranty, you must return the product to an authorized service dealer.
Should you have any unanswered questions
concerning this warranty, please contact:
McCulloch, a division of Husqvarna
Consumer Outdoor Products N.A., Inc.
9335 Harris Corners
Charlotte, NC 28269
1--800--554--6723 In Canada, contact:
McCulloch
850 Matheson Blvd. West
Mississauga, Ontario L5V 0B4
Giving the model number, serial number and
date of purchase of your product and the
name and address of the authorized dealer
from whom it was purchased.
THIS WARRANTY GIVES YOU SPECIFIC
LEGAL RIGHTS, AND YOU MAY HAVE
OTHER RIGHTS WHICH VARY FROM
STATE TO STATE.
NO CLAIMS FOR CONSEQUENTIAL OR
OTHER DAMAGES WILL BE ALLOWED,
AND THERE ARE NO OTHER EXPRESS
WARRANTIES EXCEPT THOSE EXPRESSLY STIPULATED HEREIN.
SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS OR THE EXCLUSION OR
LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE
ABOVE LIMITATIONS OR EXCLUSION
MAY NOT APPLY TO YOU.
This is a limited warranty within the meaning
of that term as defined in the Magnuson-Moss Act of 1975.
The policy of McCulloch is to continuously
improve its products. Therefore, McCulloch
reserves the right to change, modify, or discontinue models, designs, specifications,
and accessories of all products at any time
without notice or obligation to any purchaser.
U.S. EPA/CALIFORNIA/ENVIRONMENT CANADA
EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS: The U.S. Environmental
Protection Agency, California Air Resources
Board, Environment Canada and McCulloch
are pleased to explain the emissions control
system warranty on your year 2010 and later
small off--road engine. In California, all small
off--road engines must be designed, built, and
equipped to meet the State’s stringent anti-smog standards. McCulloch must warrant
the emission control system on your small
off--road engine for the periods of time listed
below provided there has been no abuse,
neglect, or improper maintenance of your
small off--road engine. Your emission control
system includes parts such as the carburetor,
the ignition system and the fuel tank. Where a
warrantable condition exists, McCulloch will
repair your small off--road engine at no cost
to you. Expenses covered under warranty
include diagnosis, parts and labor.
MANUFACTURER’S WARRANTY COVERAGE: If any emissions related part on
your engine (as listed under Emissions
Control Warranty Parts List) is defective or a
defect in the materials or workmanship of the
engine causes the failure of such an emission
related part, the part will be repaired or replaced by McCulloch. OWNER’S WARRANTY RESPONSIBILITIES: As the small off-road engine owner, you are responsible for
the performance of the required maintenance listed in your instruction manual.
McCulloch recommends that you retain all
receipts covering maintenance on your
small off--road engine, but McCulloch cannot
deny warranty solely for the lack of receipts
or for your failure to ensure the performance
of all scheduled maintenance. As the small
off--road engine owner, you should be aware
that McCulloch may deny you warranty coverage if your small off--road engine or a part
of it has failed due to abuse, neglect, improper maintenance, unapproved modifications,
or the use of parts not made or approved by
the original equipment manufacturer. You are
responsible for presenting your small off--road
engine to an McCulloch authorized repair cen-
19
ter as soon as a problem exists. Warranty repairs should be completed in a reasonable
amount of time, not to exceed 30 days. If you
have any questions regarding your warranty
rights and responsibilities, you should contact
your nearest authorized service center, call
McCulloch at 1--800--554--6723, or send e-mail
correspondence to emission.warranty@
HCOP--emission.com. WARRANTY COMMENCEMENT DATE: The warranty period
begins on the date the small off--road engine
is purchased. LENGTH OF COVERAGE:
This warranty shall be for a period of two
years from the initial date of purchase, or until the end of the product warranty (whichever
is longer). WHAT IS COVERED: REPAIR
OR REPLACEMENT OF PARTS. Repair or
replacement of any warranted part will be
performed at no charge to the owner at an
approved McCulloch servicing center. If you
have any questions regarding your warranty
rights and responsibilities, you should contact
your nearest authorized service center, call
McCulloch at 1--800--554--6723, or send e-mail
correspondence to emission.warranty@
HCOP--emission.com. WARRANTY PERIOD: Any warranted part which is not
scheduled for replacement as required
maintenance, or which is scheduled only for
regular inspection to the effect of “repair or
replace as necessary” shall be warranted for
2 years. Any warranted part which is scheduled for replacement as required maintenance shall be warranted for the period of
time up to the first scheduled replacement
point for that part. DIAGNOSIS: The owner
shall not be charged for diagnostic labor
which leads to the determination that a warranted part is defective if the diagnostic work
is performed at an approved McCulloch
servicing center.
CONSEQUENTIAL DAMAGES: McCulloch may be liable for damages to other engine components caused by the failure of a
warranted part still under warranty. WHAT IS
NOT COVERED: All failures caused by
abuse, neglect, or improper maintenance
are not covered. ADD-- ON OR MODIFIED
PARTS: The use of add--on or modified parts
can be grounds for disallowing a warranty
claim. McCulloch is not liable to cover failures of warranted parts caused by the use of
add--on or modified parts. HOW TO FILE A
CLAIM: If you have any questions regarding
your warranty rights and responsibilities,
you should contact your nearest authorized
service center, call McCulloch at
1--800--554--6723, or send e-mail correspondence to emission.warranty@HCOP-emission.com. WHERE TO GET WARRANTY SERVICE: Warranty services or repairs
shall be provided at all McCulloch service centers. Call: 1--800--554--6723 or send e-mail correspondence to emission.warranty@HCOP-emission.com. MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION RELATED PARTS: Any McCulloch approved
replacement part used in the performance of
any warranty maintenance or repair on emission related parts will be provided without
charge to the owner if the part is under warranty. EMISSION CONTROL WARRANTY
PARTS LIST: Carburetor, air filter (covered up
to maintenance schedule), ignition system:
spark plug (covered up to maintenance schedule), ignition module, muffler including catalyst
(if equipped), fuel tank. MAINTENANCE
STATEMENT: The owner is responsible for
the performance of all required maintenance
as defined in the instruction manual.
The information on the product label indicates which standard your engine is certified.
Example: (Year) EPA and/or CALIFORNIA.
This engine is certified to be emissions compliant for the following use:
Moderate (50 hours)
Intermediate (125 hours)
Extended (300 hours)
20