1. Turn the ignition key to the “ON” position, but do not start the engine.
2. Press and hold the “MODE” button until the display shows “OIL SERVICE.”
3. Once the display shows “OIL SERVICE,” press the “SET” button until the OIL SERVICE display resets to “----“.
4. Turn the ignition key to the “OFF” position to save the new settings.
That's it! The oil change button on your Suzuki DF40 outboard motor has been successfully reset.
