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| TROUBLE | POSSIBLE CAUSE | REMEDY | PAGE | ||
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Engine runs irregu- | Fuel | Empty | Refill as soon as possi- | |||
larly or stalls |
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| Stale or contaminated | Have serviced by | |
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| Yamaha dealer | |
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| Fuel tank | Water or dirt present | Have serviced by | |
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| Yamaha dealer | |
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| Spark plug | Fouled or defective | Replace | |
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| Incorrect heat range | Replace | |
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| Gap incorrect | Adjust | |
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| Spark plug cap | Loose | Connect properly | |
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| Cracked, torn, or dam- | Replace | — |
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| aged |
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| Electrical wir- | Loose connection | Tighten or connect | — |
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| properly | |
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| Fuel injection | Jet nozzle clogged | Have serviced by | — |
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| system |
| Yamaha dealer | |
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Warning light or | Fuel level | Empty | Refill as soon as possi- | |||
indicator blinks |
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| Engine over- | Jet intake clogged | Clean | |
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| heated |
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| Check engine | Faulty sensors | Have serviced by | — |
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| warning |
| Yamaha dealer | |
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Watercraft slow or | Cavitation | Jet intake clogged | Clean | |||
loses power |
| Impeller damaged or | Have serviced by | — | ||
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| worn | Yamaha dealer | |
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| Engine over- | Engine speed reduc- | Clean jet intake and | |
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| heat warning | tion control activated | cool engine | |
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| Oil pressure | Engine speed reduc- | Add oil | |
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| warning | tion control activated |
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| Spark plug | Fouled or defective | Replace | |
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| Incorrect heat range | Replace | |
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| Gap incorrect | Adjust | |
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| Spark plug | Loose | Connect properly | |
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| caps |
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| Electrical wir- | Loose connection | Tighten or connect | — |
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| properly | |
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| Fuel | Stale or contaminated | Have serviced by | |
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| Yamaha dealer | |
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| Air filter | Clogged | Clean or replace | |
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| Oil buildup | Replace | |
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