Ducati Diavel Service Manual: Disassembly of the seat
Remove the seat and turn it upside down.
Loosen the special screws (4), turn the plates (5) and open the seat cover (2) lateral sides to slide it out.
Removal of the seat
Insert the key in the lock, turn it clockwise and release the seat.
Pull the seat (1) backwards to release it from the front catches and remove it.
...
Reassembly of the seat
Place the seat cover (2) on the seat and fix it (on the lower side) by
starting screws (4) on plates (5).
Tighten the screws (4) to a torque of 4 nm +/- 10% (sect. 3 - 3, Frame torque
settings) ...
Other materials:
Reassembling the clutch
Position the spacer (13).
Fit the flat ring (11) and the belleville washer (10) on the clutch center
(12), so that the convex side faces the clutch
drum.
Locate the belleville washer (8).
Apply the prescribed grease to the thread of the gearbox primary shaft and
the mating surfac ...
Refitting the expansion tank
If the support (15) has been removed, place the hose clamps (14) on the
bracket (15) orienting them as indicated.
Fully press the pins (a) to block the clamps (14) until pins surfaces (b) are at
the same level of the clamps (14) surfaces.
Apply recommended threadlocker to the thread of the ...
Removing the silencer
Loosen the clamp (38) that retains the silencer (4) to the complete exhaust
system.
While holding the nut (8), loosen the screw (1) and remove the silencer (4)
from the motorcycle.
Loosen the screws (40) and remove the silencer guard (41).
...