PIAGGIO 500 cc, Service Manual

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6 - 8
N.B.: the torque limiter is provided with 4 gears that
function as clutch driving plates. The driven plates are
made with 4 Belleville washers with a splined shape;
this assembly allows to transmit torques below 10 kgm.
In case of wrong starting operations, any counterstrokes
likely to damage the engine structure are avoided by
the limiter, with consequent reversal of rotation of the
driving shaft.The limiter assembly cannot be over-
hauled. If defects are found on the toothed disks, it is
recommendable to replace the assembly.
Freewheel assembly on magneto flywheel
- Check the freewheel contact surfaces condition.
- Carefully clean the freewheel to remove any trace of
LOCTITE.
- Degrease the freewheel holes threading and the
fixing screws.
- Apply LOCTITE 242 to the screw ends.
- Assemble the freewheel on the magneto flywheel
making sure that the ground part is in contact with the
flywheel, that is the wheel snap ring must be visible.
- Cross-tighten the 6 fixing screws to the prescribed
torque.
Tightening torque:
Free wheel fixing screws: 13 - 15 N·m
05_148
05_147
- Oil the freewheel “rollers”.
Flywheel and starting system
05_145_1