Ensure the MPU (Magnetic Pickup) is installed correctly.
Unscrew and pull out the magnetic pickup that is located near the flywheel of the engine Inspect the magnetic tip and ensure that it is clean and free of debris. Screw the MPU in until the tip makes contact with the top of the flywheel teeth. Back out the magnetic pickup ½ to ¾ of a turn.
Slowly turn the potentiometer counter-clockwise until the LED just turns off.
As soon as the LED turns off, start to slowly turn back the potentiometer clockwise just until the led starts to flicker.
Add: Unit 1405, 2000 Xiangfu Road, Xiamen City, China