Main Control: 1) Hand Control: O is from position. Left and right side are provided for the corresponding forward or reverse control. 2) Connect to the engine element: the positive and negative side depends on your connection paths. Remote control: A: Press A, the engine will be positively forward, it will stop when loosening. B: Press B, the engine will turn negatively, it will stop when loosening. C: Press C and release. The engine will push forward positive for 1 minute and then stop. D: Press D and then release, the engine will turn negative for 10 minutes and then stop.