Undo the screws (11) and remove the chain cover (10).
Loosen the chain (sect. 4 - 3, Adjusting the chain tension).

Remove the chain with the tool code 88713.1344.
The tool is composed of a holder (a), punch (b), body (c) and two wrenches (d) and (e).
Fit the link to be opened into the holder (a).
Fit a punch (b) into the body (c) and manually unscrew the screw until the punch no longer protrudes.
Fit the holder (a) and link into the body (c).
Manually turn the screw (f) on body (c) so that the punch (b) locates against the pin, taking care that they are aligned with each other.
Fit hex wrench (d) into the hexagonal part of the body (c) and wrench (e) onto the bolt.
Turn the bolt (f) clockwise to push out the pin.


Remove the chain.
Engage a low gear and unscrew the nut (12).
Remove the nut (12) and the safety washer (13) on the pinion.
Remove the engine pinion (14) from the gearbox secondary shaft.

Remove the spacer (15) with o-ring (16) from the gearbox secondary shaft.
Important
The o-ring (16) must be renewed on reassembly.

Inspecting the final drive
Refitting the front sprocketRemoving the valve rocker arms
With the cylinder head in the condition described in the previous paragraph,
remove the rocker arms.
Unscrew the eight plugs (12) and recover the seals (15).
Using an m6 screw, withdraw the shafts (2) of the opening rocker arms (3) on
the exhaust and intake sides.
Remove the openi ...
Cylinder compression test
Note
The on-screen icons used during this procedure are explained in a table at
the end of this section.
Engine performance is directly correlated to the pressure that can be
measured in the combustion chambers of the two
cylinders. Pressure which is too high/low or an excessive difference be ...
Indication of range reached for service
When service coupon threshold is achieved, upon every key-
on the system displays the indication of the type of
intervention that is required (oil service or desmo
service).
The (red) warning is activated as a large icon for 10 seconds
upon every key-on (1, fig. 33) Then as a small warning th ...