Honda TRX450ER Owner's Manual page 163

Drive Chain
6. Check the chain roller ( ) for wear and have it replaced if necessary.
The chain roller must be replaced if it is worn to 1/16 in (1.5 mm).
For replacement, see your Honda dealer.
LEFT SIDE
1/16 in
(1.5 mm)
(1) 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.
Servicing Your Honda
154
1
Normal Sprocket Teeth
GOOD
(1)
Worn Sprocket
Teeth
REPLACE