Fully degrease the crankshaft splined end and the corresponding spline on the primary drive gear.
Position the spacer (c) onto the crankshaft.

Fit the driving gear (b) onto the crankshaft with the oil pump drive sprocket facing the crankcase.

Temporarily secure the gear with the washer (4) and nut (3).
Important
If fitting a new primary driving gear (b), check the backlash.

To check the clearance, temporarily fit the clutch bell (1) complete with the primary driven gear (a) on the gearbox primary shaft. Fix a dial gauge to the engine crankcase, positioning the stylus against a gear tooth.
Turn the driven gear (a) to mesh the teeth and check that clearance ranges between 0.05 And 0.07 Mm.
Repeat the check at 16 different points of the driven gear.
If the measured values are outside the permissible tolerance limits, try changing the position of driven gear (a) on the primary shaft, leaving the driving gear (b) on the crankshaft. If still outside tolerance values, renew the whole primary drive gear pair.

After checking backlash, fit the bush 88713.3406 On a torque wrench, lock the pinion (b) with the holding tool 88713.3417.
Position the washer (4) and the ring nut (3). Use the special tool 88713.3406 To tighten the ring nut (3) to a torque of 190 nm (min. 171 Nm - max. 209 Nm) (sect. 3 - 3, Engine torque settings).

Refit the oil pump (d) and check the clearance between the oil pump gear and primary drive gear on the crankshaft (sect. 9 - 2.1, Refitting the oil pump).

Thoroughly degrease the mating surfaces of the clutch bell (1).
Fit the spacer (2) onto the primary shaft. Fit the clutch housing (1) along with the driven gear (a).



Removal of the primary drive gear
Gearbox assemblyKeys (fig. 62)
The owner receives a set of keys comprising:
1 Active key (1, fig. 62)
1 Passive key (2, fig. 62)
It contains the code used by the "hands free" system for the
key-on, in different modes.
The active key (1, fig. 63) Is the one that is normally used:
press button (a, fig. 63) To ...
Disassembly of the gearchange mechanism
Refer to the exploded view at the beginning of this section for indications
on disassembly and renewal of gearchange
components.
If the bushing (2) inside the pedal (1) needs replacing, grease the external
surface and drive the new bushing into place
using a press. The bushing must be seate ...
Refitting the clutch-side crankcase cover
Clean and degrease mating surfaces on the clutch-side crankcase half cover
and crankcase and ensure that locating bush
(12) and the o-ring (11), located in correspondence with the oil way, are
installed in the crankcase.
Apply an even, regular bead of ducati liquid gasket (a) on the mating ...