Ducati Diavel Workshop Manual page 89

Maintenance operations
Place the covers (5) and (6) in the reference hole of the handlebar.
Fix covers (5) and (6) by tightening the screws (7) to a torque of 10 Nm ± 10% (Sect. 3 - 3, Frame torque settings).
Adjusting the clutch lever and front brake lever
The clutch lever (1) is fitted with a span adjuster (2) which serves to alter the distance of the lever from the handlebar.
The lever distance can be adjusted through 10 clicks of the dial (2). Turn clockwise to increase lever distance. Turn the
adjuster counter clockwise to decrease lever distance.
When the clutch lever (1) is operated, drive from the engine to the gearbox and the drive wheel is disengaged. Correct
use of the clutch lever is very important in all riding situations, especially when moving off.
The position of the front brake lever (3) can be adjusted in the same way.
Warning
Any adjustment of clutch and brake levers must only be carried out when motorcycle is stationary.