Ducati MONSTER 696 Owner's Manual page 78

Detach the lambda sensor cable (D) from the tank flange
cover.
Attenzione
Before removing the flange cover (16), make sure the
tank is empty and position a rag to collect any spilt fuel.
Hold the fuel tank in a raised position and remove the flange
cover (16) by unscrewing the nuts (17).
D
E
fig. 72
16
17
fig. 73
77