Use the tool code 88713.1805 To hold the driving pulley on the engine crankcase against rotation.
Important
If this operation is carried out with the engine installed in the frame, hold the driveshaft pulleys against rotation using the tool code 88713.2011 Mounted on the alternator cover.
Loosen the nut (15) using the socket supplied with the service tool.

Remove the nut (15), the spacer (20) and the outer pulley (18).

Remove the first woodruff key (16) from the timing belt driveshaft.
Remove the intermediate spacer (19) and the inner pulley (18).

Remove the inner spacer (17) and second woodruff key (16) on the timing belt driveshaft.

It is now possible to remove the circlip (10) on the driveshaft.

Disassembly of the camshaft pulleys
Refitting the timing belt driveshaft pulleysDisassembly of gear interlock plunger and pawl assembly
Unscrew the interlock plunger screw (5) and remove the seal (6), spring (7)
and the detent ball (8).
Unscrew the clutch-side crankcase half screw (3) and remove the pawl (4),
washer (2) and spring (1).
...
Turn indicators (automatic reset)
The instrument panel controls the automatic reset of the turn
indicators.
After activating one of the two turn indicators, they can be
deactivated using the reset button (12, fig. 12).
If the turn indicator is not "reset" manually, the instrument
panel will automatically switch it ...
Overhaul of the crankcase halves
Carefully examine the engine crankcase halves.
Check that the surfaces of the crankcase halves are perfectly flat using a
reference surface.
Check that the bearings (1) and (18), and the bushings (2) and (17) are in
optimum conditions. Note that the main
bearings must always be changed in p ...