Throttle Butterfly Valve
NOTE:
Do not adjust only 1 valve. Whenever adjustments are made, always adjust both butterfly valves.
- Remove both air cleaners. Loosen lock nut on butterfly valve stop screw. Turn stop screw all the way in. Make sure that butterfly valve closes fully.
- Insert a 0.002" (0.05 mm) feeler gauge between top of butterfly valve and housing to hold valve open. See Fig 1 . Set stop screw so that it just touches stop arm. Tighten lock nut. Press stop arm against stop screw and withdraw feeler gauge.
- Repeat procedure on other side of engine. Seal threads of adjusting screws with a drop of paint. Replace air cleaners. Check throttle linkage and kick-down switch adjustment. Check operation of throttle switch.