APRILIA SCARABEO 500 2008 Service Station Manual page 147

SCARABEO 500
Engine
- Undo the fixing screw and remove the gas outlet
union with the relevant O-ring.
- Check that the crankcase coupling surface is not
worn or distorted.
- Check that the by-pass valve seat, the torque
limiter bearing and the water pump shaft bearing
are not worn.
Characteristic
By-pass housing hole diameter:
13.9 mm
Bearing diameter for start-up gear shaft:
12 mm
Bearing diameter for pump shaft:
8 mm
- Check that the coupling surface and the oil filter
union are not worn or deformed.
- Check the condition of the stator and of the rele-
vant cable harness.
ENG - 147