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  1. 1

    Engine Knock...confirm my worst fear

    My Johnson 175 started a slight knock at 4000 rpms but would go away at 4500 or 5000. No knock at low speeds. Engine still runs strong. Getting oil for sure and the water pump is still pumping. I think it's a valve knock. Sound right to anyone out there. Time for a re-build?????
  2. 1

    Yamaha to Mercruiser conversion

    Is it possible to switch out the entire upper and lower unit from Yamaha 5.0 YEMS to a merc out drive? Is the long Yoke splines compatible?
  3. 1

    1993 Yamaha Stern drive question

    I need to remove the outdrive and replace the U-joint bellow and bearing seal. I have been told that a manual was never produced for this year Yamaha. I have searched and cannot find one. Is there another manual that I could use that would be similar. 1993 Yamaha 5.0 YEMS:confused:
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