- Timing chain
Damage/stiffness → Replace the timing chain, camshaft sprockets and crankshaft sprocket as a set.
2. Check:
- Camshaft sprocket
- Crankshaft sprocket
More than 1/4 tooth wear "a" → Replace the camshaft sprockets, crankshaft sprocket and timing chain as a set.
![](https://motoinstruction.ru/img/yamaha/20/126615.jpg)
a. 1/4 tooth; b. Correct; 1. Timing chain; 2. Camshaft sprocket or crankshaft sprocket