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During normal saw operation, the temperature of the chain
increases. The drive links of a correctly tensioned warm
chain will hang approximately 1/16 in. (1.58 mm) out of the
bar groove.
1/16 in. (1.58 mm)
10.3
SHARPEN THE CUTTERS
Sharpen the cutters if chain does not go into wood easily.
We recommend that a service center, which has an electric
sharpener, perform important sharpening work.
1. Tensioning chain.
2. Sharpen the cutters corner with a 5/32 in. (4 mm)
diameter round file .
3. Sharpen the top plate, side plate and depth gauge with a
flat file.
NOTE
NOTE
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4. File all the cutters to the specified angles and the same
length.
During the process:
•
Keep the file flat with the surface to be sharpened.
•
Use the midpoint of the file bar.
•
Use light but firm pressure when sharpening the
surface.
•
Lift the file away on each return stroke.
•
Sharpen the cutters on one side and then move to the
other side.
Replace the chain if:
•
The length of the cutting edges is less than 1/5 in. (5
mm).
•
There is too much space between the drive links and the
rivets.
•
The cut speed is slow.
•
Sharpening the chain many times but it does not increase
the cutting speed. The chain is worn.
10.4
GUIDE BAR MAINTENANCE
Make sure that the bar is turned over periodically to keep
symmetrical wear on the bar.
13
NOTE
NOTE
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