14
MAINTENANCESCHEDULE
Check:
Fuelmix ture level Beforeeach use....
Bar lubrication Before each use.......
Chain tension B efore each use.......
Chain sharpness Before eac h use.....
For damaged parts Before each use...
For loose caps Beforeeach use......
For loose fasteners Beforeeach 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
andmuffler Every 25 hours*..........
Replace spark plug Yearly.
Replace fuel filter Yearly...
* Hou rs of Operation --
Each hour of operation is approximately
2 tanks of fuel.
AIR FILTER
CAUTION:Donot clean f ilter in gasoline
orother flammable s olvent to avoid creating
af ire hazard or producing harmful evapora-
tive emissions.
Cleaning the airfilter:
Adirty air filter decreas es the life and perfor-
manceof the engine and increas es fuel con-
sumption and harmful emissions. Always
cleany our air filter after 10 tanks of fuel or 5
hours of operation, whichever comes first.
Cleanmore frequently in dusty c onditions. A
used air filter can never be completely
cleaned.It is advisable t o replace your air fil-
terwith a new one after ev ery 50 hours of op-
eration, or annually,w hichever comes first.
1. Loosen 3 screws onc ylinder cover.
2. Remove cylinder cov er.
3. Remove air filter.
4. Clean the air filter using hot soapy water.
Rinse with clean cool water. Air dry
completely before reinstalling.
5. Lightly oil air filter befor e installing to im-
prove the efficiency of air filter. Use
2--cycleengine oil or motor oil (SAE 30).
Squeeze excess oil from filter.
6. Reinstall air filter.
7. Reinstall cylinder cov er and 3 screws.
TIghten securely.
Air Filter Cylinder Co
v
er
Screws
Cylinder
Cover
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
Asthe unit is us ed, carbon deposits build up
on the muffler and spark arresting screen,
andmust be removed to avoid cr eating afire
hazard or affecting engine performance.
Replacethe spark arresting s creen if breaks
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 ofop-
eration or annually,w hichever comes first.
1. Loosen and remove the 2 muffler cover
screws.
2. Remove the muffler cover (cov ers naps
offmuffler 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 scr een witha
wirebrush. Replace sc reeni fbr eaks are
found.
5. Replace any broken or c racked muffler
parts.
6. Reinstall diffuser and spark arres ting
screen assembly with round holes fac-
ing up.
7. Reinstall muffler cover and 2 s crews.
Tightens ecurely.
CARBURETOR ADJUSTMENT
WARNING: The c hain will be mov-
ingduring most of this procedure. Wear your
protective equipment and observe all safety
precautions.The chain must not mov e at idle
speed.
Thecar buretor has been carefully set at the
factory. Adjustments may be necessary if
you notice any of the following conditions:
SChainmov es at idle. See IDLE SPEED--T
adjusting procedure.
SSawwill not idle. See ID LES PEED--T ad-
justing procedure.
Idle Speed--T
Allowengine to idle. If the chain mov es, idle
istoo fast. If t he engine stalls, idle is too slow.
Adjusts peed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). T he idle speed screw is located in the
areaabov et he primer bulb and is labeled T.
STurnidle speed s crew (T) clockwise to in-
crease engine speed.
STurn idle speed screw (T) counterclock-
wise to decrease engine speed.