Fast Idle Operation
- For this check the engine and throttle chamber must be at 77°F (25°C). For proper fast idle operation the matching mark on fast idle cam must be aligned with center of cam roller.
- If the matching mark and center of the cam roller do not align, turn the cam adjusting screw until proper alignment is obtained. See Fig 1
. With matching mark aligned, check clearance between primary throttle valve and wall of throttle bore. Clearance should be .016-.020" (.4-.5 mm). Adjust with the fast idle adjusting screw. See Fig 1
.NOTE: Fast idle adjustment is unnecessary unless it has been tampered with.
- When the matching mark aligns with the center of the cam roller, clearance (throttle chamber to primary throttle valve) should be .016-.02" (.4-.5 mm). If clearance is off, turn the fast idling adjusting screw to bring into specifications.