Poulan 115260526 - Manual (Page 16)

16
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, with unit disconnected from
power source, clean all sawdust from the
guide bar and sprocket hole.
To maintain guide bar:
S
Disconnect pruner 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 replace-
ment is necessary, use only the guide bar speci-
fied 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: Disconnect unit from
power source before performing service or
making adjustments.
CHAIN SHARPENING
Improper chain sharpening techniques and/or
depth gauge maintenance will increase the
chance of kickback which can result in serious
injury.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. Disconnect pruner 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.
Depth Gauge
File
File Holder
Cutter
90 ˚
S Align the 30 ˚ file holder marks parallel
with the bar and to the center of the
chain.
Cutter
Cutter 30 ˚
File Holder Line
S Sharpen cutters on one side of the chain
first. File from the inside of each cutter to
the outside. Then, turn the chain saw
around and repeat the process for the
other side of the chain.
S File on the forward stroke only. Use 2
or 3 strokes per cutting edge.
S Keep all cutters the same length when
filing.
S File enough to remove any damage to
cutting edges (side plate and top plate
of cutter).
All Cutters
Same Length
Remove Damage
Top Plate
Side Plate
S File chain to meet the specifications
as shown.