Honda TRX300EX Owner's Manual page 148

6. Check the chain roller ( ) for wear and replace if necessary.
RIGHT SIDE
(4) chain roller
7. Inspect the front and rear sprocket teeth for excessive wear or damage.
If necessary, have your Honda dealer replace a worn sprocket.
Damaged Sprocket
Teeth
REPLACE
Use of a new chain with worn sprockets will cause rapid chain wear.
4
Normal Sprocket Teeth
GOOD
Drive Chain
(4)
Worn Sprocket
Teeth
REPLACE
Servicing Your Honda
139