Choke Valve Lever

Fig. 31 Measuring Choke Valve Clearance:

1. Ensure choke valve moves freely throughout its range, without binding or sticking.
2. With engine cold and ambient temperature below 77°F, open and close throttle and ensure choke blade is almost completely closed.
3. Measure clearance between choke valve and carburetor bore with suitable gauges, Fig. 31. Clearance should be within range specified in ``Adjustment Specifications'' chart.
4. If choke blade clearance is not within specifications, remove air cleaner housing, then inspect strangler spring, choke piston and linkage for free and proper operation. Lubricate choke valve shaft and links as required.
5. If clearances are still not within specifications, remove carburetor from manifold and idle-up actuator from carburetor.
6. Rotate fast idle cam counterclockwise and insert pin through holes in cam and bracket to lock cam in place.
7. Bend choke lever up or down, as needed, to obtain specified choke lever clearance. Bending choke lever upward decreases choke blade clearance, while bending lever downward increases clearance.
8. Remove pin from fast idle cam, reinstall idle-up actuator and carburetor, then ensure clearances are still within specifications.