Ducati DIAVEL Owner's Manual page 202

Refit the left cowling (1) as follows:
- start the side screw (2) retaining the electrical
parts box in its thread;
- start the top screw (3) retaining the electrical
parts box in its thread;
- start the bottom screw (4) retaining the central
cowling in its thread;
3
4
2
1
Fig. 154
201