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Yamaha 2002 115 4 stroke with 704 Controls

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  • Yamaha 2002 115 4 stroke with 704 Controls

    Issue: Went out Saturday, engine runs strong and tops off around 5800 RPM as usual - sounds great. After a 12 mile run and pulling back, noticed when advancing the 704 Control throttle, would top off at 4700 RPM. Still sounded fine and ran great for next 3 hours, except couldn't get to historical 5800 RPM top end. When pushing throttle up at 4700 (looking for that last 15%), RPMs would drop to 4500, 4200 and hang there. Don't know if there is some mechanical slippage occuring at Control Box or on outboard. Repeat - engine runs great, sounds great . . . just can't get past the 4700 RPM mark now. Idease?

  • #2
    fix your fuel issue.
    nothing slipped.

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    • #3
      Can you be more specific on "fix your fuel issue"? The 115 runs smooth, no sputter or burps. New fuel / water separator.

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      • #4
        you can simply look at the linkage on the engine to see if its fully open.
        my bet is a clogged VST filter or low rail pressure or partially clogged injector filters.

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