To check the valves clearance, it is necessary to have access to the cylinder head covers and then remove the components listed below.

Unscrew the two fixing screws (1) of the cover (2) according to the crankshaft.

Fit the tool handgrip 88713.0123 In the holes of the generator cover to be able to turn the crankshaft so that the valve on which the control is carried out is in rest position.
With the valve in the rest position, slide a feeler gauge between rocker arm (a) and the lowest side of the cam (b) to measure the clearance.
The clearances must be within the specified limits:



With the valve in the rest position, slide a feeler gauge between closing
rocker arm (c) and the highest side of the cam
(d) to measure the clearance. 



If detected values exceed the specified limits, replace opening and/or closing shims, as described in paragraph "removing the valves" (sect. 9 - 4.5), With an adequate height to obtain the specified clearance.
Note
Opening rocker arm shims measuring from 1.8 To 3.45 Mm and closing rocker arm shims measuring from 2.2 To 4.5 Are available as spare parts. The size is punched on the shim.
Remove the handgrip tool 88713.0123 From the hole of the generator cover.
Make sure that the o-ring (3) is fitted on the cover (2).

Refit the external cap (2) by tightening the two retaining screws (1) to a torque of 10 nm (min. 9 Nm - max. 11 Nm) (sect. 3 - 3, Engine torque settings).



Change timing belts
To replace the timing system belts follow the procedures described in paragraph "removal of the movable tensioner/timing belt" and "refitting the timing belts" (sect. 9 - 4.2).
Changing the engine oil and filter cartridge
Spark plugs replacementFlywheel - alternator
Screw
Alternator stator
Plug
Sealing ring
O-ring
Cover
Screw
Aluminium gasket
Screw
Bracket
Locating bush
Screw
generator cover
Flange
Flanged nut
Plane washer
Flywheel
Washer
Inner ring
Needle roller bearing
Electric starter driven gear
Starter clutc ...
Passenger grabhandle
Passenger grabhandle (1, fig. 107) Is located inside the tail
guard; to take it out, remove the seat (see "removal of the
seat" on page 119), pull the knob (2, fig. 107) While taking out
the grabhandle (1, fig. 107) From its housing until it is fully
extended.
Warning
Before use, pu ...
Removal of the cooling system hoses and unions
Loosen the clips (21) that secure the radiator/thermostat sleeve (40) and the
radiator/plug sleeve (24) to the water
radiators.
Loosen clips (25) and (43) that secure the breather pipe (26) to the
radiator/plug sleeve (24) and to the left radiator.
Loosen the clips (34) securi ...