- oil pump driven gear
- oil pump body
- oil pump driven gear cover
Cracks/damage/wear → Replace the defective part(-s).
2. Measure:
- inner-rotor-to-outer-rotor-tip clearance (a)
- outer-rotor-to-oil-pump-body-side clearance (b)
- oil-pump-body-to-inner-rotor-and-outer-rotor clearance (c)
Out of specification → Replace the oil pump.
![](https://motoinstruction.ru/img/yamaha/16/122366.jpg)
1. Inner rotor; 2. Outer rotor; 3. Oil pump body
Inner-rotor-to-outer-rotor-tip clearance:
- 0.03-0.09 mm
- Limit: 0.15 mm
Outer-rotor-to-oil-pump-body-side clearance:
- 0.03-0.08 mm
- Limit: 0.15 mm
Oil-pump-body-to-inner-rotor and outer-rotor clearance:
- 0.03-0.08 mm
- Limit: 0.15 mm