The crankcase halves must be in good condition and perfectly clean. The mating surfaces must be perfectly flat and free from burrs.
Overhauling the alternator-side crankcase half
The following parts must be present on the internal side of the crankcase half:
The roller bearing (15) with retaining circlip (16) installed in correspondence with the end of the timing belt driveshaft.
Insert the circlip (5) in the crankcase half installing it in its seat on the bearing (4).
Refitting the alternator-side crankcase half
The following parts must be present on the internal side of the crankcase half: the double race ball bearing (9) supporting the selector fork shaft. Apply threadlocker to the screws (11). Fit the retaining plate (10) to the gearbox secondary shaft bearing (9) screwing the screws fully into the chain-side crankcase half (11).
Note
The bearing retaining plate must be positioned so that the countersunk side is facing upwards.
Tighten the screws (11) to a torque of 10 nm (min. 9 Nm - max. 11 Nm) (sect. 3 - 3, Engine torque settings).
Lubricate the ring (6) with denatured alcohol, drive it fully home against the crankcase half, and orient it as shown.
The primary shaft bearing (7) with internal spacer (6), oriented so that the closed side of the plastic roller cage (m) faces The crankcase half: apply grease to the bearing rollers. Fit the inner race (a) removed previously from the bearing. Apply grease to the inner race.
The main bearing (1) with the corresponding bushing (2) (if present).
The bearing (4) with the retaining circlip (5) installed in correspondence with the timing belt driveshaft.
Insert the circlip (5) in the crankcase half installing it in its seat in the crankcase half on the bearing (4).
Note
Bearings do not have a specific mounting position (except main bearings); however it is good practice to install the bearings so that side bearing the writing is facing upwards.
Fit the mesh filter as described in sect. 4 - 3, Changing the engine oil and filter cartridge.
Important
To avoid damaging the filter, insert it by hand only. Do not use hammers or other metal tools.
Above the mesh filter seat there is a plug (19) which closes off the lubrication oilway. If it is to be renewed, apply the prescribed threadlocker to its threads.
Tighten the plug to a torque of 24 nm (min. 21 Nm - max. 27 Nm) (sect. 3 - 3, Engine torque settings).
Disassembly of the generator cover
Undo the three stator retaining screws (25) and the two retaining screws (9)
of the two cable grommet bracket (10) from
inside the generator cover.
Remove the stator (2) and the cable grommet bracket (10).
The generator-side crankcase cover is fitted with a bearing (27), held in
pla ...
Reassembly of the clutch-side crankcase cover
Fit the plug (14) and the gasket (13). Fit the plug (17) and the gasket (15).
If the bush has been replaced, fully seat the new bush (7) in the slot in the
cover using a suitable drift and a press.
If the sealing ring (8) needs to be renewed, fit the new seal into the crankcase
cover, po ...
Tips for use on the track
We recommend level 8 be used for a couple of full laps (to
allow the tyres to warm up) in order to get used to the
system. Then try levels 7, 6, etc., In succession until you
identify the dtc intervention level that suits you best (always
try each level for at least two laps to allow the tyres t ...