Ducati Diavel Workshop Manual page 67

Maintenance operations
Remove the tank covers
Remove the fuel tank
Remove the coil-spark plugs wires (1), loosening the screws (2) of both spark plugs.
Using the appropriate tool 88713.2877 to replace the spark plugs.
Place the coil-spark plugs wires (1) in the relevant seats and tighten the screws (2) to a torque of 10 Nm (Min. 9 Nm -
Max. 11 Nm) (Sect. 3 - 3,
Operations
Refit the fuel tank
Refit the tank fairings
Refit the seat
5 - 2, Removal of the fuel tank
fairings
8 - 2, Removal of the fuel tank
Engine torque settings).
Section reference
8 - 2, Refitting the fuel tank
5 - 2, Refitting the fuel tank fairings
5 - 3, Refitting the seat