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Servicing Your Honda 97
Drive Chain
Removal, Cleaning & Replacement
For maximum service life, the drive chain should
be cleaned, lubricated, and adjusted before each
outing. Your CRF has an endless (riveted master
link) type chain. It should only be removed or
replaced by your dealer.
The O-rings can be damaged by steam cleaning,
high pressure washers, and certain solvents.
1. Clean the side surfaces of the chain with a
dry cloth. Use a high flash point solvent such
as kerosene – not gasoline.
Do not brush the rubber O-rings. Brushing
will damage them. Use of a solvent may also
damage the O-rings.
2. Replace the drive chain if it has damaged
rollers, loose fitting links, damaged O-rings,
or otherwise appears unserviceable.
3. Measure the drive chain plate (1). If the drive
chain plate is worn anywhere to a thickness
of 0.53 in (13.4 mm), the drive chain must be
replaced.
Replacement chain:
Size/link: DID520MXV/114
0.53 in
(13.4 mm)
(1)
(1) drive chain plate (inner)
4. Inspect the sprocket teeth for possible wear
or damage. Replace them if necessary.
Never install a new drive chain on badly
worn sprockets, or use new sprockets with
a badly worn drive chain. Both chain and
sprockets must be in good condition, or the
new replacement chain or sprocket(s) will
wear rapidly.
Excessively worn sprocket teeth have a
hooked, worn appearance. Replace any
sprocket, which is damaged or excessively
worn.
NOTICE
Use of a new chain with worn sprockets will
cause rapid chain wear.
5. Lubricate the drive chain.
6. Recheck chain slack and adjust if necessary.
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