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14
MAINTENANCE SCH E DULE
Check:
Fuel mixture level Before ea ch 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 ea ch 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.
AIR FILTE R
CAUTION
: Do not clean filter in gasoline
or other flammable solvent to avoid creating
a fire hazard or producing harmful evapora-
tive emissions.
Cleaning the air filter:
A dirty air filter decreases the life and per for-
mance of the engine andincreases fuel con-
sumption and harmful emissions. Always
clean your air f ilter 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 airfil-
ter withanew oneafter every 50hours ofop-
eration, or annually, whichever comes f irst.
1. Loosen 3 screws on cylinder cover.
2. Remove cylinder cover.
3. Remove air filter.
4. Cleanthe airfilter usinghotsoapywater .
Rinse with clean cool water. Air dry
completely before reinstalling.
5. Lightly oil air filter bef ore installing to im-
prove the efficiency of air filter. Use
2--cycle engine oilor motoroil (SAE30).
Squeeze excess oil f rom filter.
6. Reinstall air filter.
7. Reinstall cylinder cover and 3 screws.
TIghten securely.
Air Filter
Cylinder Co
v
er
Screws
Cylinder
Cover
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
As the unit is used, carbon deposits buildup
on the muffler and spark arresting screen,
and m ust beremoved toavoid creating afire
hazard or a ffecting engine performance.
Replacethe spark arresting screen ifbreaks
occur.
Mu
f
f
ler Di
f
f
user
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 m uffler cover
screws.
2. Remove the muffler cover (cover snaps
off muffler body).
3. Remove muffler diffuser and spark ar-
resting screen assembly. Notice the
orientation of these parts for reassem-
bling.
4. Clean the spark arresting screen with a
wire brush.Replacescreenifbreaks a re
found.
5. Replace any broken or cracked muffler
parts.
6. Reinstall diffuser and spark arresting
screen assembly with round holes fac-
ing up.
7. Reinstall muffler cover and 2 screws.
Tighten securely .
CARBURETOR ADJUSTMENT
WARNING: The chain will be mov-
ing during most ofthis procedure. Wearyour
protective equipment and observe all safety
precautions. Thechain m ustnotmoveatidle
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 a t idle. See IDLE SPEED--T
adjusting procedure.
S Saw will not idle.See IDLESPEED--T ad-
justing procedure.
Idle Speed--T
Allow engine to idle. If t he chain moves, idle
istoofast. Iftheenginestalls,idleis tooslow.
Adjust speed until engineruns w ithout chain
movement (idle too fast) or stalling (idle too
slow). The idlespeed screw is locatedin the
area above the primer bulb and is labeled T.
S Turn idle speed screw (T) clockwise to in-
crease engine speed.
S Turn idle speed screw (T) counterclock-
wise to decrease engine speed.