Poulan Pro PP338PT - Manual (Page 19)

19
TO SHARPEN CHAIN:
1. Disconnect spark plug.
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.
30 ˚
75 ˚ 60 ˚
Rounded
Corner
0.025 inch
(0.65 mm)
Right
Hook Angle
Wrong
Squared Off
Corner
Too Much Hook Angle
WARNING:
Maintain the proper hook
angle according to the manufacturer’s specifica-
tions for the chain you are using. Improper hook
angle will increase the chance of kickback
which can result in serious injury.
4. Check and lower depth gauges.
Depth Gauge Tool
Depth Gauge
File
S Place gauge tool on cutter.
S If the depth gauge is higher than the
depth gauge tool, file it level to the top of
the depth gauge tool.
S Maintain rounded front corner of depth
gauge with a flat file.
NOTE: The very top of the depth
gauge should be flat with the front half
rounded off with a flat file.
If you require further assistance or are unsure
about performing this procedure, contact your
authorized service dealer or call our customer
assistance help line at 1--800--554--6723.
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.
TO REPLACE CHAIN:
1. Disconnect spark plug.
2. Remove bar clamp nut.
3. Remove bar clamp.
4. Turn adjusting screw by hand counter-
clockwise until adjusting pin just touches
the stop.
5. Slide guide bar behind sprocket until
guide bar stops against sprocket.
6. Remove the old chain.
7. Carefully remove new chain from pack-
age. Hold chain with the drive links as
shown.