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Recent content by jopdegruijter

  1. J

    misfiring 40hp two stroke twin

    Hi, I've just bought a Mariner outboard which gives me a lot of trouble. It's an engine that is 95% equal to the Yamaha 40 hp, manufactured in 1990. The bottom cylinder only fires at high speeds (>60% throttle). Both carbs are clean, I changed the ignition wires (1 coil for both cylinders...
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