- Timing chain «1»
Damage/stiffness → Replace the timing chain and camshaft and camshaft sprocket as a set.
![](https://motoinstruction.ru/img/yamaha/3/111802.jpg)
2. Check:
- Camshaft sprocket
More than 1/4 tooth wear «a» → Replace the camshaft sprockets and the timing chain as a set.
![](https://motoinstruction.ru/img/yamaha/3/111803.jpg)
a. 1/4 tooth; b. Correct
1. Timing chain roller; 2. Camshaft sprocket