Ducati Multistrada MTS 1200S D-Air Owner's Manual page 393

Brake system
If you find exceeding clearance on brake lever or
pedal and brake pads are still in good condition,
contact your Ducati Dealer or authorised Service
Centre to have the system inspected and any air
drained out of the circuit.
Warning
Brake and clutch fluid can damage paintwork
and plastic parts, so avoid contact.
Hydraulic fluid is corrosive; it may cause damage and
lead to severe injuries. Never mix fluids of different
qualities. Check seals for proper sealing.
Clutch system
If the control lever has exceeding clearance and the
transmission snatches or jams as you try to engage
a gear, it means that there might be air in the circuit.
Contact your Ducati Dealer or authorised Service
Centre to have the system inspected and air drained
out.
392
Warning
Clutch fluid level will increase as clutch plate
friction material wears down. Do not exceed the
specified level (3 mm above the minimum level).