Grease the o-ring (16) and install it on the front sprocket spacer (15).
Fit the spacer, from the o-ring side, on the secondary shaft and drive it fully home against the inner ring of the bearing.

Check that the splines of the gearbox secondary shaft and the sprocket are in perfect condition.
Fit the engine pinion (14) on the gearbox secondary shaft by orienting it as indicated. Install the safety washer (13).
Tighten the nut (12) to the torque of 186 nm +/- 5% (sect. 3 - 3, Frame torque settings).
Bend the washer (13).

Fit the chain and close it using the tool with code 88713.1344 That was used to open the chain.
The tool is composed of a holder (a), punch (b), body (c) and two wrenches (d) and (e) and link plate holder (f).
Connect the two halves of the chain with the external link and manually fit the plate onto the pins.
Warning
Lubricate the pins abundantly; try to avoid touching them with your hands.
Fit the holder (a) onto the external link.
Fit the punch (b) into the body (c) and the plate holder (f).
Fit the body (c) onto the holder (a) which holds the chain in position.
Manually turn the bolt (g) until the plate holder (f) is seated against the plate itself.
Use wrenches (d) and (e) to turn the bolt (g) clockwise until the chain pin is in contact with the holder (f).
Remove the holder (a) from the tool.
Manually turn the bolt (g) until the punch (b) locates against the pin, taking care that they are aligned with each other.
Use wrenches (d) and (e) to turn the bolt clockwise until the punch (b) is seated against the chain plate.
To complete reassembly, repeat the entire procedure with the second pin.
Warning
Carefully check the two pins: the figure shows the correct result of the procedure.


Adjust the chain tension (sect. 4 - 3, Adjusting the chain tension).
Apply the recommended threadlocker to the screws (11).
Fit the sprocket cover (10) tightening the screws (11) to the torque of 6 nm+/- 10% (sect. 3 - 3, Frame torque settings).

Removing of the front sprocket
Replacing of the rear sprocketReassembly of the cylinder head
The exhaust side can be identified by the three threaded holes on the flange.
The intake side can be identified by the presence of four threaded holes on
the flange.
All the photos in this chapter refer to a vertical cylinder head.
Valve guide sealing rings
Position the cylinder head o ...
Removal of the air filters
Work on the vehicle right side, loosen screws (3) that secure the intake duct
(2) to the airbox, and the radiator retaining
screw (a); recover the washer (b).
Remove the intake duct (2).
Proceed in the same way to remove the lh intake duct (6), and disconnect the
connector (c) ...
Radiator fan relay
Introduction
The radiator fans are powered via a specific relay, which is enabled by the
engine control unit.
Component assembling position
A injection relay; b etv relay (throttle valve actuator motor), c radiator
fan relay, d engine control unit.
Location of right hand fan connecti ...