Check often to make sure that the tie straps are
riding evenly on the guard rails.
Lightly file burrs to remove them.
Drive Sprocket Care
Drive sprockets must always
match the chain which is being
used. A servicing dealer is best
equipped to match and replace
corresponding chains and
sprockets.
If the wear marks on the
sprocket are significantly more
than .02 inch or .5 mm, you
should replace the sprocket.
Never install a new chain on
a worn sprocket. A well-cared-
for sprocket will usually last
through two chains.
TIP:
A general rule of thumb is to replace one sprocket for
every two chains, one bar for every two sprockets and
every four chains (4=2=1).
4 chains
2 sprockets
1 bar
Appearance
Excessive wear
on teeth.
12
Troubleshooting Chain Wear
Following are some of the most common problems.
Condition:
Damaged top and/or side on cutter. Chain won’t cut
straight.
Cause:
Cutter has hit material other than wood.
Remedy:
File cutter to remove the damage. File other cutters to
same size.
Condition:
Cutter angle blunt on top edge or sloping back on side
edge. Chain must be forced to cut.
Cause:
File too large or held too high.
Remedy:
File to correct angle with proper file.
13
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