Note
The following removal operations are required in order to renew and/or clean the crankcase halves. If the original crankcase halves are to be reused, then the removal of these components is not essential.
Unscrew the screw (17) and remove the oil breather valve (1) with the o-rings (2). Check the condition of o-rings (2) and renew them if necessary.
Unscrew and remove the oil filter support nipple (6) and remove also by-pass spring (7).
Remove the mesh filter (a) from the clutch crankcase half (sect. 4 - 3, Changing the engine oil and filter cartridge).
Remove the drain plug (10) with its seal (9).
Remove gear position sensor (4) by means of the tool number 88713.3407.
Remove the
Remove the cylinder head studs (5) with the aid of the appropriate tool.
To remove the engine sensor (23), unscrew the screw (25) and recover the washer (26).
Check the condition of o-rings (22) and renew them if necessary
Loosen the clutch fluid flow rate adjusting valve (36) and remove the washer (37), the spring (38), the cap (39) and the ball (40).
Bleeding of the abs hydraulic system
If some "sponginess" is detected on the brake control, due to air bubbles in
the system, bleed the system, as indicated in
sect. 4 - 3, Changing the brake fluid.
Before bleeding a brake pump, move back the calliper pistons, as indicated in
(sect. 4 - 3, Changing the brake fluid) to Drain in ...
Refitting the timing gears
Before reassembling the removed parts, check timing gears (13) for wear.
Change, if necessary.
Important
The timing gears (13) must always be renewed as a pair.
Refitting is the reverse of removal.
Warning
When introducing the driven gear (b) check that the tongue (15) is
correctly fitted o ...
Overhaul of the connecting rods
Make the following dimensional checks on the connecting rods:
Clearance with gudgeon pin on assembly.
In the event of excessive wear (sect. 3 - 1.1, Crankshaft), replace the
connecting rod.
The small end bushing must be in good condition and firmly driven into its seat.
Check for para ...