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NOTE
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.
4. File all the cutters to the specified angles and the
same length.
NOTE
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.
10.3 GUIDE BAR MAINTENANCE
NOTE
Make sure that the bar is turned over periodically to
keep symmetrical wear on the bar.
1. Lubricate the bearings on the nose sprocket (if
present) with the syringe (not included).
2. Clean the bar groove with the scraping hook (not
included).
3. Clean the lubrication holes.
4. Remove burr from the edges and level the cutters
with a flat file.
Replace the bar if:
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