Replacement Part List

18
An authorized service center will sharpen the chain using the
right tools to ensure minimum removal of material and even
sharpness on all the cutting edges.
If you sharpen the chain yourself, use special round-section
les with the right diameter depending on the type of chain
(see “Chain Maintenance Table” pg. 18). You need a certain
amount of skill and experience to avoid damaging the cutting
edges.
Sharpen the chain as follows (Fig. 22):
• Secure the bar rmly, with the chain mounted, in a
suitable vice.
• Tighten the chain if it is loose.
• Mount the le in the guide and then insert it in the tooth at
a constant angle from the cutting edge.
• Sharpen in a forward motion a few times and repeat this
on all the cutting edges facing the same way (right or left).
• To move the chain forward, use a screwdriver.
• Turn the bar over in the vice and repeat on all the other
cutting edges.
• Check that the depth limiter tooth does not stick out
farther than the inspection tool and le any projecting
parts with a at le, rounding o the edges (Fig. 22).
• After sharpening, remove all traces of ling and dust
and lubricate the chain in an oil bath. Replace the chain
whenever:
– the length of the cutting edges decreases to 5 mm
or less;
– there is too much play between the links and the rivets.
Fig. 22
Inspection tool
Depth limiter tooth
Cutting edge
Depth
limiter
tooth
Chain Maintenance Table
inches
3/8 Mini
0.325
3/8
0.404
inches
0.018
0.026
0.026
0.031
inches
5/32
3/16
13/64
7/32
mm
4.0
4.8
5.2
5.6
mm
0.45
0.65
0.65
0.80
mm
9.32
8.25
9.35
10.26
Chain Pitch Limiter Tooth Level (a) File Diameter (d)
d
a