Throttle Valve
- Loosen locknut on stop screw for throttle valve switch and screw out a couple of turns so that it does not touch stop on throttle valve spindle. Check to make sure that switch is fully closed.
- Screw in stop screw until it touches stop on switch spindle. Turn screw in 1/4-1/3 turn and tighten locknut. Check that throttle valve switch does not jam or seize in closed position.