Poulan PRO 220 - Manual (Page 14)

14
MAINTENANCE SCHEDULE
Lubricate bar
sprocket hole After each use . . . . . . .
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 arrestor screen
and muffler Every 25 hours* . . . . . . . . .
Replace spark plug Yearly .
Replace fuel filter Yearly . . .
* Hours of Operation
AIR FILTER
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 engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
S
Clean the cover and the area around it to
keep dirt and sawdust from falling into the
carburetor chamber when the cover is re-
moved.
S Remove the parts as illustrated below.
S Wash the filter in soap and water. Rinse in
clean cool water. Air dry completely before
reinstalling.
S Lightly oil air filter before installing to im-
prove the efficiency of the air filter. Use
2--cycle engine oil or motor oil (SAE 30).
Squeeze excess oil from filter.
S Reinstall parts.
Air Filter
Cylinder
Cover
Screws
Cylinder
Cover
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.
Muffler Diffuser
Muffler
Cover
Screws
Muffler
Cover
Muffler
Body
Spark
Arresting
Screen
Cleaning is required every 25 hours of opera-
tion or annually, whichever comes first.
S
Loosen and remove the 2 muffler cover
screws.
S Remove the muffler cover (cover snaps off
muffler body).
S Remove muffler diffuser and spark arresting
screen assembly. Notice the orientation of
these parts for reassembling.
S Clean the spark arrestor screen with a wire
brush. Replace screen if breaks are found.
S Replace any broken or cracked muffler
parts.
S Reinstall diffuser and spark arrestor screen
assembly with round holes facing up.
S Reinstall muffler cover and 2 screws. Tight-
en securely.
CARBURETOR ADJUSTMENTS
Your carburetor is equipped with limiter caps.
Carburetor adjustment is a complicated task.
We recommend that you take your unit to an
authorized service dealer. Damage will occur if
you turn the needles beyond the limiter stops.
BAR MAINTENANCE
If your saw cuts to one side, has to be forced
through the cut, or been run with an improper
amount of bar lubrication it may be necessary
to service your bar. A worn bar will damage
your 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 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
Sprocket Hole
Oil Holes
S Add lubricant to sprocket hole after each
use.
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 re-
store square edges and sides.