Honda CB TWISTER Owner's Manual page 64

5. Inspect the sprocket teeth for possible
wear or damage. Replace if necessary.
Damaged sprocket
Teeth
Replace
Normal sprocket Teeth
GOOD
If the drive chain or sprockets are
excessively worn or damaged, they should
be replaced. Never use a new chain with
worn sprockets; rapid chain wear will result.
56
Adjustment:
Drive chain slack should be checked and
adjusted, if necessary, every 1,000 km (600
Worn sprocket
miles). When operated at sustained high
Teeth
speeds or under conditions of frequent rapid
acceleration, the chain may require more
frequent adjustment.
Replace
If the drive chain requires adjustment, the
procedure is as follows.
1.
2.
3.
4.
Place the vehicle on its center stand
with the transmission in neutral and the
ignition switch off.
Loosen the rear axle nut (1) by holding
rear axle shaft on other side with
spanner.
Loosen the drive chain lock nuts (3).
Turn both adjusting nuts (4) an equal
number of turns until the correct drive
chain slack is obtained. Turn the
adjusting nuts clockwise to tighten the
chain, or counterclockwise to provide
more slack.