- Oil/water pump assembly drive sprocket «1»
Cracks/damage/wear → Replace the defective part(-s).
![](https://motoinstruction.ru/img/yamaha/3/111928.jpg)
2. Check:
- Oil/water pump assembly drive chain «1».
Damage/stiffness → Replace the oil/ water pump assembly drive chain and oil/ water pump assembly drive sprocket as a set.
![](https://motoinstruction.ru/img/yamaha/3/111929.jpg)