Inspecting The Cam Shaft - PIAGGIO X8 125 Workshop Manual

X8 125-200

Inspecting the cam shaft

- Inspect the camshaft for signs of abnormal wear
on the cams.
- Check the cam height.
- Check there is no wear on the camshaft retaining
plate and its associated groove on the camshaft.
- If any of the above dimensions are outside the
specified limits, or there are signs of excessive
wear, replace the defective components with new
ones.
- Check there are no signs of wear on the auto-
matic valve-lifter cam, or the end-of stroke roller,
or the rubber buffer on the automatic valve-lifter
retaining cover.
- Check that the valve lifting spring has not yielded.
- Replace any defective or worn components.
- Check the rocking lever pins do not show signs
of wear or scoring.
- Measure the internal diameter of each rocking
lever.
Check there are no signs of wear on the pad from
contact with the cam and on the jointed adjustment
plate.
Characteristic
Rocking lever inside diameter: Standard diam-
eter
Diameter 12.000 - 12.011 mm
Rocking lever pin diameter: Standard diameter
Diameter 11.977 - 11.985 mm
Engine
ENG - 139