11-6
Fuel System
Problem: Starting impaired
Condition Remedy
1. Starter jet obstructed 1. Clean jet
2. Starter jet passage obstructed 2. Clean passage
3. Carburetor leaking air 3. Replace gasket
Problem: Idling or low speed impaired
Condition Remedy
1. Slow jet obstructed - loose 1. Clean - tighten jet
2. Slow jet outlet obstructed 2. Clean outlet
3. Pilot screw setting incorrect 3. Adjust screw
4. Float height incorrect 4. Adjust float height
Problem: Medium or high speed impaired
Condition Remedy
1. High RPM “cut out” against RPM limiter 1. Shift into higher gear - decrease RPM speed
2. Main jet obstructed 2. Clean main jet
3. Needle jet obstructed 3. Clean needle jet
4. Vacuum piston not operating properly 4. Check piston operation
5. Filter obstructed 5. Clean filter
6. Float height incorrect 6. Adjust float height
Problem: Overflow and fuel level fluctuations
Condition Remedy
1. Float valve worn - damaged 1. Replace valve
2. Float valve spring broken 2. Replace spring
3. Float not working properly 3. Adjust float height - replace float
4. Float valve dirty 4. Clean valve
5. Float height too high - too low 5. Adjust float height
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