Poulan Pro PP446T Manual De Instrucciones página 16

Adjusting Screw Bar clamp nut
3. Turn adjusting screw clockwise until
chain solidly contacts bottom of guide bar
rail Then, turn adjusting screw an addi-
tional 1/4 turn.
Adjusting Screw - 1/4 Turn
4. Using bar tool, roll chain around guide bar
to ensure all links are in bar groove.
5. Lift up tip of guide bar to check for sag.
Release tip of guide bar, then turn adjust-
ing screw 1/4 turn clockwise. Repeat until
sag does not exist.
6. While lifting tip of guide bar, tighten bar
clamp nut securely with the bar tool.
7. Use the screwdriver end of the bar tool to
move chain around guide bar.
8. If chain does not rotate, it is too tight.
Slightly loosen bar clamp nut and loosen
chain by turning the adjusting screw 1/4
turn counterclockwise. Retighten bar
clamp nut.
9. If chain is too loose, it wilt sag below the
guide bar and needs to be tightened fol-
lowing above procedure.
_WARNING: DO NOT operate the
pruner if the chain is loose. If the pruner is oper-
ated with a loose chain, the chain could jump off
the guide bar and result in serious injury.
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A dull chain
makes a sawdust powder and cuts slowly.
See CHAIN SHARPENING in the SERVICE
AND ADJUSTMENTS section.
CLEAN 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.
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
sotvent.
3. Wash the filter in soap and water.
4. Allow filter to dry.
5. Replace parts.
_y_ Air Filter
Button _'_ -- --
4/e & _d-_ 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. A worn 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 flat file.
• When rail top is uneven, use a flat file to
restore square edges and sides.
_]"_ File Rail Edges_r] []
and Sides I U I
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
,4Ol, W ARNING: 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.
16