Recent content by Notch

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    1989 Yamaha 9.9 Four Stroke

    I have a 1989 9.9 four stroke. Lots of gas gets in to the bottom end. It starts good, runs great for hours at a time, than starts fouling plugs. The bottom plug is the first to go. I have to change oil often, which is full of gas. When I'm done running the motor, I disconnect the fuel line...
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    1989 Yamaha 9.9 questions

    I have a 1989, 9.9 Yamaha 4 stroke. I get gas in the oil after about 32 hours of pulling plugs. Also I seem to fowl the lower plug about 2 times a year. Any ideas?
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