Check the cush drive bushes (6) condition and, if necessary, replace them by removing them from the flange.
Refitting is the reverse of removal.
Apply recommended grease on the rear sprocket flange (5) external diameter.
Place the rear sprocket flange (5) on sprocket (17) by inserting it on cush drive damper pins (6).
Apply prescribed threadlocker on the nut threads (4).
Start the nuts on the cush drive damper pins (6) threaded side.
Tighten the nuts (4) to a torque of 44 nm +/- 10% (sect. 3 - 3, Frame torque settings), following a cross-pattern sequence.

Check for wear following the instructions given at the beginning of this section.
To refit the nut (2) follow the specifications for the wheel fixing nut, in sect. 7 - 2, Refitting the rear wheel.
Position the clip (1) as shown.


Washing the chain
Chains with o-rings must be washed in oil, diesel fuel or paraffin (kerosene).
Do not use fuel, trichloroethylene or other solvents which will damage the rubber o-rings. For the same reason use only sprays specifically formulated for use with o-ring chains.
Replacing of the rear sprocket
Lubricating the chainReassembly of the clutch-side crankcase cover
Fit the plug (14) and the gasket (13). Fit the plug (17) and the gasket (15).
If the bush has been replaced, fully seat the new bush (7) in the slot in the
cover using a suitable drift and a press.
If the sealing ring (8) needs to be renewed, fit the new seal into the crankcase
cover, po ...
Replacing of the rear sprocket
Lock the wheel axle rotation.
Remove the clip (1).
Loosen the locking nut (2) with a socket wrench.
Fully unscrew the nut (2) and remove the washer (3) and the flange (5) with the
sprocket (17).
Collect the spacer (9).
Using a mallet, tap the flange (5) with the cush drive dampe ...
Removal of the generator cover
Note
This operation is described for an engine removed from the frame since all
reassembly procedures are easier with the
engine on the bench.
Disconnect the connector (a) from the generator cable.
Unscrew the two retaining screws (7) of the centre cap (6) over the end of
the cranksh ...