14
dusty conditions. A usedaire filter cannever
be completely cleaned. It is advisable to re-
place yourair filter witha newoneafterevery
50hoursofoperation,or annually,whichever
comes first.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air filter.
4. Clean theair filter using hotsoapy water.
Rinsewith cleancoolwater. Air drycom-
pletely before reinstalling.
5. Lightly oil air filter beforeinstalling to im-
prove the efficiency of air filter. Use
2--cycle engine oil or motor oil (SAE 30).
Squeeze excess oil from filter.
6. Reinstall air filter.
7. Reinstall cylinder cover and 3 screws.
TIghten securely.
Air Filter
Cylinder Cover
Screws
Cylinder
Cover
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As the unit is used, carbon deposits build up
on the muf fler and spark arresting screen,
andmust beremovedto avoid creatinga fire
hazard or affecting engine performance.
Replace thespark arrestingscreen ifbreaks
occur.
Muffler Diffuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
CLEANING THE SPARK ARREST -
ING SCREEN
Cleaning is required every 25 hours of op-
eration or annually, whichever comes first.
1. Loosen and remove the 2 muffler cover
screws.
2. Remove the muffler cover (cover snaps
off muffler body).
3. Remove muffler dif fuser and spark ar-
resting screen assembly. Notice the
orientation of these parts for reassem-
bling.
4. Clean the spark arresting screen with a
wire b rush.Replace screenif breaks are
found.
5. Replace any broken or cracked muffler
parts.
6. Reinsta ll diffu ser an d spark arre st ing
screen a ssembly with round hole s facing
up.
7. Reinstall muffler cover and 2 screws.
Tighten securely.
CARBURETOR ADJUSTMENT
WARNING:
The chain will be mov-
ing during most of this procedure. Wear your
protective equipment and observe all safety
precautions.Thechain must notmoveat i dle
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 notidle. SeeIDLE SPEED--T ad-
justing procedure.
Idle Speed--T
Allow engine to idle. If the chain moves, idle
is toofast. Iftheenginestalls, idle is tooslow.
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). Theidle speed screw is located inthe
area above the primer bulb and is labeled T.
S
T urn idle speed screw (T) clockwise to in-
crease engine speed.
S
T urn idle speed screw (T) counterclock-
wise to decrease engine speed.
If you require further assistance or are unsure
abou t pe rforming this procedure, conta ct your
authorized service dealer or call
1--800--554--6723.
BAR MAINTENANCE
If your saw c utsto oneside, has tobeforced
throughthecut, orbeenrunwith animproper
amount of bar lubrication it may be neces-
sarytoserviceyourbar. Awornbarwill dam-
age your chain and make cutting difficult.
After each use, ensure ON/ST OP switch is
in the S TOP position, then clean all sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
S
Move ON/STOP switch to the STOP posi-
tion.
S
Loosen and remove chain brake nuts and
chain brake. 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 r ail topis uneven,use aflat file tore-
store square edges and sides.
