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| Trouble |
| Possible Cause |
| Remedy | ||
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| 13. | Poor connections or damaged | 13. | Check wires for wear or breaks. | |||
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| ignition wiring. |
| Tighten all loose connections. | |
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| Replace worn or broken wires. | |
| 14. | Failed ignition parts. | 14. | Have serviced by a Yamaha | |||
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| dealer. | |
| 15. | Specified engine oil not used. | 15. | Check and replace oil with | |||
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| specified type. | |
| 16. | Thermostat faulty or clogged. | 16. | Have serviced by a Yamaha | |||
E. Engine power loss. |
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| dealer. | |||
| 17. | Air vent screw closed. | 17. | Open the air vent screw. | |||
| 18. | Fuel pump damaged. | 18. | Have serviced by a Yamaha | |||
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| dealer. | |
| 19. | Fuel joint connection incorrect. | 19. | Connect correctly. | |||
| 20. | Heat range of spark plug incorrect. | 20. | Inspect spark plug and replace it | |||
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| with recommended type. | |
| 21. | Engine not responding properly to | 21. | Have serviced by a Yamaha | |||
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| shift lever position. |
| dealer. | |
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| 1. | Propeller damaged. | 1. | Have propeller repaired or | |
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| replaced. | |
| 2. | Propeller shaft damaged. | 2. | Have serviced by a Yamaha | |||
F. Engine vibrates |
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| dealer. | |||
3. | Weeds or other foreign matter | 3. | Remove and clean propeller. | ||||
excessively. | |||||||
| tangled on propeller. |
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| 4. | Motor mounting bolt loose. | 4. | Tighten bolt. | |||
| 5. | Steering pivot loose or damaged. | 5. | Tighten or have serviced by a | |||
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| Yamaha dealer. | |
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