![](https://motoinstruction.ru/img/aprilia/17/123180.jpg)
Undo and remove the two fixing screws.
Using a thickness gauge check clearance between rotor and stator and replace the rotor / stator unit if necessary.
Clearance between rotor and stator: 0.04±0.10 mm (0.0016 in - 0.0039 in).
![](https://motoinstruction.ru/img/aprilia/17/123181.jpg)
Slide off the shaft with the cover.
![](https://motoinstruction.ru/img/aprilia/17/123182.jpg)
Collect the lock pin from the shaft.
![](https://motoinstruction.ru/img/aprilia/17/123183.jpg)
Remove the oil pump rotor.
![](https://motoinstruction.ru/img/aprilia/17/123184.jpg)
Remove the oil pump stator.
Caution! Check that the rotor and stator are not damaged (no evident abrasions, scores or any other marks).
![](https://motoinstruction.ru/img/aprilia/17/123185.jpg)
See also specifications for this operation.