Ducati Monster 796 Workshop Manual page 603

Clutch assembly: primary drive gears
To check the gear backlash, temporarily fit the clutch drum (1) complete with internal spacer (4), driven gear (A), roller
bearing (3) and internal bush (2) 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 with the dial gauge that backlash 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 the backlash is still outside the tolerance limits, renew the
primary drive gear pair (1).
After checking the gear backlash, secure the pinion (B) with the service tool part no. 88713.2423, apply the
recommended grease to the ring nut (5) and tighten it to a torque of 190 Nm (Min. 171 Nm - Max. 209 Nm) (Sect. 3 - 3,
Engine torque settings).
Stake the lock washer (6) onto the nut (5).
Refit the oil pump 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 drum (1), the internal bearing (3) and the bush (2).