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  1. R

    why did my 90 hp yamaha blow up??????

    I have a 1994 yamaha outboard 2 stroke jet on my 94 hewes craft. Last year it quit running. It would run fine and then just shut off, It did this 3 times so I put it on the traler and did a compresion test and one cylinder was way down to only 10 pounds of compression. I have recently ordered a...
  2. R

    what RPM to run on 90 horse yamaha

    I have a 1994 yamaha jet drive engine, it tachs at 4800 rpm. Can someone tell me what rpm this should run at.
  3. R

    how to unhook oil injection?????

    I am going to buy a 16 foot hewes craft boat with a 90 horse power yamaha jet outboard on it. Its a 1994 model and I want to mix my fuel rather than have an oil injection unit ruin the motor. How do you unhook it thanks.
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