E
Trouble |
| Possible Cause |
| Remedy |
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| 1. | Spark plug(s) fouled or incorrect | 1. | Inspect spark plug(s). Clean or |
|
| type. |
| replace with recommended type. |
| 2. | Fuel system obstructed. | 2. | Check for pinched or kinked fuel |
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|
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| line or other obstructions in fuel |
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|
|
| system. |
| 3. | Fuel contaminated or stale. | 3. | Fill tank with clean, fresh fuel. |
| 4. | Fuel filter clogged. | 4. | Clean or replace filter. |
| 5. | Failed ignition parts. | 5. | Have serviced by a Yamaha |
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|
|
| dealer. |
| 6. | Spark plug gap incorrect. | 6. | Inspect and adjust as specified. |
| 7. | Poor connections or damaged | 7. | Check wires for wear or breaks. |
|
| ignition wiring. |
| Tighten all loose connections. |
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|
|
| Replace worn or broken wires. |
| 8. | Specified engine oil not used. | 8. | Check and replace oil as specified. |
B. Engine idles | 9. | Thermostat faulty or clogged. | 9. | Have serviced by a Yamaha |
irregularly or stalls. |
|
|
| dealer. |
| 10. | Carburetor adjustments incorrect. | 10. | Have serviced by a Yamaha |
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|
|
| dealer. |
| 11. | Fuel pump damaged. | 11. | Have serviced by a Yamaha |
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|
|
| dealer. |
| 12. | Air vent screw on the fuel tank | 12. | Open the air vent screw. |
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| closed. |
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| 13. | Choke knob pulled out. | 13. | Return to home position. |
| 14. | Motor angle too high. | 14. | Return to normal operating |
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|
|
| position. |
| 15. | Carburetor clogged. | 15. | Have serviced by a Yamaha |
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|
|
| dealer. |
| 16. | Fuel joint connection incorrect. | 16. | Connect correctly. |
| 17. | Throttle valve adjustment incorrect. | 17. | Have serviced by a Yamaha |
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| dealer. |
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