Fuel Cutoff

Fuel injection stops when decelerating, i.e., when the throttle valve is at idle position and the engine speed is high, so that unburned gas will not be exhausted. Fuel injection starts again when the above conditions are no longer present.

Fuel delivery also stops when the engine speed exceeds 6,800 RPM. This will prevent engine overrun which adversely affects the engine. Fuel delivery starts again when the engine speed decreases to less than 6,500 RPM.