Harley Davidson Motorcycle
2007
 
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Harley  Davidson Motorcycle
harley davidson motorcycle
harley davidson motorcycle

Harley Davidson Motorcycle Carburetor Repair
Overflow
1. Restricted fuel tank vent system.

2. Loose float bowl screws.

3. Damaged float bowl O-ring.

4. Damaged or leaking float assembly.

5. Particle contamination in fuel inlet fitting cavity.

6. Worn or dirty inlet valve or seat.

7. Improper fuel level in float bowl.
1. Correct restricted hose. Replace vapor vent valve.

2. Tighten screws.


3. Replace O-ring.


4. Replace float assembly.

5. Clean and clear cavity and fuel supply tract.

6. Clean or replace valve and clean seat.

7. Adjust float tab for correct fuel level.
Poor Idling
1. Idle speed improperly adjusted.

2. Inlet system air leak (faster idling).

3. Loose low speed jet.

4. Contaminated or plugged low speed system.

5. Enrichener valve not seated or leaking.

6. Leaking accelerator pump.
1. Adjust operating idle speed.

2. Correct as required.


3. Tighten jet.

4. Clean, clear and correct as required.


5. Adjust, clean or replace.


6. Repair.
Poor Fuel Economy
1. Excessive use of enrichener system.

2. Enrichener valve not seated or leaking.

3. Dirty air cleaner filter element.

4. Restricted fuel tank vent system.

5. High speed riding style.

6. Idle speed improperly adjusted.

7. Loose jets.

8. Fuel level too high.

9. Plugged or restricted bowl vent.

10. Worn or damaged needle or needle jet.

11. Vacuum piston assembly malfunction.

12. Plugged air jets or passages.

13. Excessive accelerator pump output.


14. Idle mixture screw adjusted to far out
1. Limit system use.


2. Adjust, clean or replace.

3. Clean or replace as required.

4. Correct restricted hose. Replace vapor vent valve.

5. Modify riding habits.


6. Adjust operating idle speed.

7. Tighten jets.

8. Adjust float tab for correct fuel level.

9. Clean and clear passages.

10. Replace needle or needle jet.

11.Check Vacuum Piston Assembly. See troubleshooting chart.

12. Clean, clear and correct as required.

13. Check and clean accelerator pump bypass orifice.

14. Set idle mixture screw to 2 to 3 turns out.
Hard Starting
Hard Starting - Cold
Hard Starting - Hot
Poor Road Performance
Poor High Speed Performance
Poor Performance
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Condition               Check For This Problem                  Fix the problem by:
 
Condition               Check For This Problem                  Fix the problem by:
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Harley Davidson Motorcycle Carburetor and Fuel System  Troubleshooting Guide
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Condition               Check For This Problem                  Fix the problem by:
Carburetor and Fuel System  Troubleshooting Guide
Harley Davidson Motorcycle Carburetor
This is what a HD CV carburetor diaphragm is supposed to sound and look like. Use this as a reference when you are reassembling your carburetor after removing the top cover. (more)
This is what a HD CV carburetor diaphragm sounds like when the diaphragm is pinched or torn, or the top is otherwise not seated properly. (more)