Stihl OILOMATIC Manual page 53

Condition
Cracks only under the rear rivet hole
of a few or all cutters and opposing
tie straps.
Cause
a) Dull cutters.
b) Backward sloping side plate (side
plate angle too wide).
c) Forward sloping side plate (side
plate angle too small).
d) Depth gauge setting too low.
e) Excessive pressure applied to
make a chain cut in case a) and b).
Remedy
Install a new chain.
52
Condition
Cracks only under the front rivet
hole of a few or all cutters and
opposing tie straps.
Cause
Depth gauge setting too high and
excessive pressure being applied to
make chain cut.
Remedy
Install a new chain.
Condition
Cracks under both rivet holes of a
few or all cutters and tie straps.
Cause
a) Dull cutters.
b) Backward sloping side plate (side
plate angle too wide).
c) Forward sloping side plate (side
plate angle too small).
d) Incorrect depth gauge setting.
e) Overtensioned chain; occurs
primarily at very low outside
temperatures.
Remedy
Install a new chain.
Chain and Bar Manual