Maybe this applies. I am not sure.
■ Managing the maintenance schedule (Maintenance) In the “Maintenance” menu, you can view or reset the current maintenance schedule. 1. Use the directional keypad and the [SET] button to select “Maintenance” in the “MENU” screen. 2. The “MAINTENANCE” screen is displayed. • “Current” indicates the elapsed hours since the previous maintenance (reset). • “Interval” indicates the recommended interval between maintenances. 3. To reset the maintenance schedule, use the [LI] (Up/Down) buttons on the directional keypad to select the engine. Set using the [SET] button. TIP: • Reset All: This option is available for a twin-engine application only. It resets the maintenance schedule of both engines. • STD: Displays and resets the current maintenance schedule of each engine. • It is not possible to change the maintenance interval (100 h).