Ducati Monster 796 Workshop Manual page 97

Maintenance operations
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).
Press button "X" from this DDS page: the activation procedure page closes and system quits without going through test selection.
Disconnect the DDS.
Turn the key to on, let make one complete turn and make sure that the vertex of the hexagon (D) in-between the cable
mounting holes is secure/fixed next to the notch (B).
If the test result was positive in the previous step, proceed with the remaining operations. While if result was negative,
find failure cause before continuing.