Ducati Monster 796 Workshop Manual page 93

Maintenance operations
On the DDS, press "F9": to go back to test selection page.
Press "F6" to close the valve that stays closed.
Tighten the adjuster ring nut (11) on cable until you obtain a clearance in the range of 0.5 mm to 1.5 mm measured
between limit stop and pulley stop.
Once adjustment is completed, distance between the stop plate welded to the exhaust pipe and the valve pulley front tab
must be 0.5 to 1.5 mm.
Tighten lock nut (10).