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    Replacing driveshaft in 99 Yamaha F100, will I have to reshim?

    When I replace the driveshaft (pinion, not prop shaft) in my lower unit do I need to reshim the shaft or can I just put it back together with the existing shims? It has about 500 hours and should be in great shape internally. I have to replace because of oil pump spline damage on the powerhead...
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    Old OMC/Johnson controls on 1999 Yamaha 4-stroke?

    I'm replacing my 1984 75hp Johnson with a 1999 Yamaha 4-stroke and I'm wondering if my old OMC controls would work? Throttle & shift: Both engines have push to open throttle. Shift control on the OMC unit is pull for forward, and push for reverse. I have no idea if the Yamaha is the same...
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    Should I put a 100HP Yamaha Four Stroke on my 16ft Hewescraft River Runner

    I have a 1983 16ft Hewescraft River Runner and I'm wondering if it would be wise to install a 100hp Yamaha 4-stroke which I already have. The boat is rated for 80hp max but I've seen people run 115hp but they were all 2-stroke jets. Probably pushing 85hp at the jet and weighing in at about...
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