Honda CRF230F 2017 Owner's Manual page 138

CRF230F
6. Inspect the sprocket teeth for possible wear or
damage. Replace if necessary.
Damaged sprocket
Teeth
Replace
Normal sprocket Teeth
Standard sprocket sizes:
Drive sprocket
(engine)
13 teeth
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.
Worn sprocket
Teeth
Replace
GOOD
Driven sprocket
(rear wheel)
50 teeth
Adjustment
If the drive chain requires adjustment, the procedure
is as follows:
1. Place a support block under the engine to raise
the rear wheel off the ground.
2. Loosen the rear axle nut (1) while holding the
rear axle shaft (2).
3. Turn both the right and left chain adjusters (3)
equally to increase or decrease chain slack.
4. After adjusting, be sure the same adjuster index
marks (4) align with the stopper pins (5) on both
sides of the swingarm.
If the drive chain slack is excessive when the rear axle
is moved to the furthest limit of adjustment, the drive
chain is worn and must be replaced.
5. Tighten the rear axle nut to:
108 N.m (11.0 kgf.m, 80 lbf.ft)
If a torque wrench is not used for this installation,
see your Honda dealer as soon as possible to verify
proper assembly.
59
(Cont.)