2003 Ducati Superbike 999S Owners Manual - Page 147

Checking brake and clutch fluid level Fluid level should never fall below the MIN mark on each reservoir (fig. 54) (figure shows front and rear brake reservoirs). If level drops below the limit, air might get into the circuit and affect the operation of the system involved. Brake and clutch fluid must be topped up and changed at the intervals specified in the routine maintenance chart (see Warranty Card) by a Ducati Dealer or Authorized Workshop. Important It is recommended all brake and clutch lines be changed every four years. Clutch system If the control lever has exceeding play and the transmission snatches or jams as you try to engage a gear, it means that there is air in the circuit. Contact a Ducati Dealer or Authorized Workshop to have the system inspected and air drained out. Warning Clutch fluid level in the reservoir tends to increase as the clutch plates friction material wears out. Do not exceed specified level (3 mm above minimum level). Brake system If you find exceeding play on brake lever or pedal and brake pads are still in good condition, contact a Ducati Dealer or Authorized Workshop to have the system inspected and any air drained out of the circuit. Warning Do not spill any brake and clutch fluid on the paintwork or on plastic parts or they will damage. Hydraulic oil is corrosive; it may cause damages and lead to severe injuries. Never mix different quality oils. Check for joint proper sealing. E MIN fig. 54 57