How to Adjust the Throttle of Gasoline Engine Water Pump

Water pump throttling adjustment method is as follows:

1. Loosen the throttle adjusting screw to make the engine reach the lowest stable speed.

2. Put the screwdriver on the idle screw, and when the engine is about to stall, use the screwdriver to unscrew the idle screw slowly, so that the engine can run smoothly and reach a high speed.

3. Unscrew the throttle screw to minimize the engine speed from high speed.

4. Unscrew the screw and increase the engine speed until the throttle opening becomes smaller and the throttle suddenly closes.