APRILIA SCARABEO 500 2008 Service Station Manual page 161

SCARABEO 500
Inspecting the flywheel components
- Check that the magnets are in good conditions.
- Check that the magnet support cage is not de-
formed or broken.
Starter gear rim
- Check that there is no wear or abnormal marks
on the «rollers» of the freewheel and on the sur-
face of the starter ring gear hub.
- Check the hub outside diameter.
Characteristic
Hub outside diameter
45.665 mm (+0.008; +0.005) mm (1.79 in
(+0.0003; + 0.0002) in)
- Check the inside diameter of the start-up gear
bushing.
- Check that the toothing is not worn.
Characteristic
Bushing inside diameter
27 mm (+0.020; +0.041) mm (1.0629 in (+0.0008;
0.0016) in)
NOTE
IF THE FAULTS FOUND AFFECT THE HUB, IT IS EXPEDIENT TO REPLACE THE STARTING RING
GEAR AND THE FREEWHEEL.
IF ONLY THE BUSHING IS WORN, REPLACE ONLY THE COMPLETE STARTING RING GEAR.
ALSO CHECK THE DIAMETER AND THE SURFACE OF THE BEARING ON THE CRANKSHAFT.
IN CASE OF IRREGULARITIES, REPLACE THE CRANKSHAFT.
Engine
ENG - 161