Poulan Pro PP446ET Instruction Manual page 16

1. Clean the cover and the area around it to
keep dirt from falling into the carburetor
chamber when the cover is removed.
2. Remove parts by pressing button to re-
lease air filter cover.
NOTE: To avoid creating a fire hazard or
producing harmful evaporative emissions, do
not clean filter in gasoline or other flammable
solvent.
3. Wash the filter in soap and water.
4. Allow filter to dry.
5. Replace parts.
Button
Air Filter
Air Filter Cover
BAR MAINTENANCE
If your pruner cuts to one side. has to be
forced through the cut. or been run with an im-
proper amount of bar lubrication it may be
necessary to service your bar. Aworn bar will
damage your chain and make cutting difficult.
After each use, ensure ON/OFF switch is in
the OFF position, then clean all sawdust from
the guide bar and sprocket hole.
To maintain guide bar:
• Move ON/OFF switch to the OFF position
and disconnect spark plug.
• Loosen and remove bar clamp nut and
chain brake. Remove bar and chain from
pruner.
• Clean the oil holes and bar groove after
each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
\
Oil Holes
• Burring of guide bar rails is a normal
process of rail wear. Remove these burrs
with a fiat file.
• When rail top is uneven, use a flat file to
restore square edges and sides.
!_'_ File Rail Edges_r] r]
I"1
and Sides J U J
Square ] ]
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 pruner in the repair
parts list.
LUBRICATION
Fill Cap
• See GUIDE BAR AND CHAIN OIL under
the OPERATION section.
MUFFLER AND SPARK ARREST-
ING SCREEN
_& WARNING: The muffler o n thisprod-
uct
contains chemicals known to the State of
California to cause cancer.
As your unit is used, carbon deposits build up
on the muffler and spark arresting screen.
For normal homeowner use, however, the
muffler and spark arresting screen will not re-
quire any service. After 50 hours of use. we
recommend that your muffler be serviced or
replaced by your authorized service dealer.
REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. In-
spect spark plug every 25 hours of usage.
Clean and/or replace as necessary. Set spark
plug gap at 0.025 inch (0.6 mm). Ignition tim-
ing is fixed and nonadjustable.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and
discard.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench.
4. Reinstallthe spark plug boot.
mIWAHNIN_: Disconnect the spark
plug before perforrning maintenance, service, or
adjustments except for carburetor adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that
requires special tools. We recommended you
refer chain sharpening to a professional chain
sharpener.
CHAIN REPLACEMENT
'_ WARNING:
Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
it is normal for a new chain to stretch during the
first 15 minutes of operation. You should re-
check your chain tension frequently and adjust
the chain tension as required. See CHAIN TEN -
SION section.
Replace the old chain when it becomes worn or
damaged, Use only the Low-Kickback replace-
ment chain specified in the repair parts list.
16