Cleaning & Inspection
- Thoroughly clean metal parts in carburetor cleaner. Using compressed air, dry all components and blow out all passages. DO NOT use wire or pointed metal objects for cleaning. Inspect air horn, main body and throttle body for cracks.
- Inspect choke shaft and throttle shaft for wear. Check all jets and air bleeds for open passages. Inspect needle and seat for wear. Inspect float and accelerator pump cup for damage. Replace all damaged components.
- Inspect vacuum diaphragm for damage. Inspect idle mixture screw for wear and burrs. Apply battery voltage to solenoids to ensure solenoids operate (indicated by valve stem movement).
- Check electric choke heater by connecting an ohmmeter to wire connector and heater ground. If continuity does not exist, replace electric choke heater.
- To check Mixture Control (M/C) solenoid, apply battery voltage across solenoid using solenoid connector. (Scheme 1) From bottom of air horn, blow air through valve in direction indicated. If air does not flow through valve with solenoid energized, replace air horn assembly (M/C solenoid and air horn are replaced as an assembly).
