Poulan Pro PP5000P - Manual (Page 11)

11
7. Use a screwdriver 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 will 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.
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/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 and disconnect spark plug (or discon-
nect powerhead from power source).
S Loosen and remove bar clamp nut and
chain brake. Remove bar and chain from
pruner.
S Clean the oil holes and bar groove after
each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
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.
Correct Groove Worn Groove
File Rail Edges
and Sides
Square
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
Bar Oil
Fill Cap
S See GUIDE BAR AND CHAIN OIL under
the OPERATION section.
SERVICE AND ADJUSTMENTS
WARNING: Always stop unit and dis-
connect spark plug wire (or disconnect pow-
erhead from power source) before performing
maintenance, service, or adjustments except
for carburetor adjustments.
CHAIN SHARPENING
WARNING:
Improper chain sharpen-
ing techniques and/or depth gauge mainte-
nance will increase the chance of kickback
which can result in serious injury.
WARNING:
Wear protective gloves
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for chain
sharpening:
S
Reduction in size of wood chips. The size of
the wood chip will decrease as the chain
gets duller until it becomes more like a pow-
der than a chip. Note that dead or rotted
wood will not produce a good chip.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
Tools required:
S 3/16 inch (4,5 mm) diameter round file and
file holder
S Flat file
S Depth gauge tool
TO SHARPEN CHAIN:
1. Move ON/STOP switch to the STOP posi-
tion and disconnect spark plug (or discon-
nect powerhead from power source).
2. Check chain for proper tension. Adjust
chain tension if necessary. See CHECK
CHAIN TENSION section.
3. Sharpen cutters.
S To sharpen the cutters, position the
file holder level (90 ˚) so that it rests on
the top edges of the cutter and depth
gauge.
NOTE: The chain has both left and
right hand cutters.