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Recent content by Dman142

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    M18C 350a

    Just for fun, I took an exciter coil that was too big but none the less, a Tohatsu from a newer system. I ground the exciter down so the flywheel would clear it. Everything went as planned, and it produced 80v, but still no spark. Tried the aftermarket cdi, no spark. Running out of ideas. I’ve...
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    M18C 350a

    Looks like she’ll be put in the naughty corner for awhile will all sorts of parts next to her. Maybe it’ll magically fix herself and find the courage to run again. This winter I may tackle her again and when that fails, it’ll be parted out. Sad to see a mint motor get torn down to nothing. Oh...
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    M18C 350a

    I sit here wondering if the CDI box I bought is bad. The previous owner said it lost spark instantly and couldn’t figure it out. I can pull voltages off each component. Red to black: 70-74 (exciter)! Blue to black: 8 volts (pulser) Yellow to Tan: 8 volts (charge coil) Red to Blue: 70-74 volts...
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    M18C 350a

    I sit here wondering if the CDI box I bought is bad. The previous owner said it lost spark instantly and couldn’t figure it out. It sucks because I am pouring money down the drain on a motor that really isn’t worth much. Was excited to see how it performs compared to others in the same HP...
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    M18C 350a

    What does Brown to Earth mean? The brown and black go to the kill switch which has been disconnected anyways. It almost seems like something isn’t grounded and killing all forms of spark. That chart is about all I get for diagnostics. A certified car mechanic and master electrician couldn’t...
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    M18C 350a

    Pic: What does “Small deflection….” Mean?
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    M18C 350a

    Chart:
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    M18C 350a

    Pic:
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    M18C 350a

    If I can get a pic to load, I’ll include a few pages on the ignition system.
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    M18C 350a

    Factory shop manual for 1984. Bought it online for $12. I’d post a pic but it says the file is too big.
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    M18C 350a

    Is there a resident Tohatsu member here who can help me out with the first generation 18hp? Having a heck of a time getting spark on this little guy. The service manual is toilet paper since it’s written in terms that most will not understand, nor do I. It is not very comprehensive in the...
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