Guide Bar Maintenance; Chain Sprocket - SNOWJOE Sunjoe GTS4002C Operator's Manual

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
(see "Chain Maintenance Table" on pg. 19). You need a certain
amount of skill and experience to avoid damaging the cutting
edges.
in a suitable vise.
Tighten the chain if it is loose.
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).
Turn the bar over in the vise and repeat on all the other
cutting edges.
Check that the depth limiter tooth does not stick out
farther than the inspection tool
and lubricate the chain in an oil bath. Replace the chain
– The length of the cutting edges decreases to
5 mm or less;
– There is too much play between the links and the rivets.
Fig. 29
Cutting edge
25).
Inspection tool
Depth
limiter
tooth
Depth limiter tooth
18

Guide Bar Maintenance

When the guide bar shows signs of wear, turn it over on the
saw to distribute the wear for maximum bar life. Feathering or
burring of the bar rails is a normal process of bar wear. You
sideways
Turn the saw over, check the underside of the guide bar, and
make sure that the lubrication holes and chain groove are free
from impurities.

Chain Sprocket

Regularly check the condition of the sprocket and replace it
when wear exceeds 0.5 mm (Fig. 30).
Do not mount a new chain with a worn sprocket or vice-versa.
Fig. 30
< 0.5 mm