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4.3 Yamaha V6 inboard

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  • 4.3 Yamaha V6 inboard

    I am working on a 4.3 V6 and i need to know what the ignition timing is set on. Thanks i really appreciate it!

  • #2
    Re: 4.3 Yamaha V6 inboard

    And if anyone can help its a yamaha outdrive but on the outdrive it says yahama but could the motor be a mercruiser? it is a 4.3 V6 and i also need to know where i can find a four barrel carb for it mine is old and pitted on the inside and its flooding on the four barrel side and i just want to replace it? Where can i find a good one at priced decently? thanks

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    • #3
      Re: 4.3 Yamaha V6 inboard

      All 4.3s are GM engines, but if the outdrive is Yamaha, your entire setup is considered a "Yamaha" I/O.
      1989 Starcraft 171S Select "Cap'n Crunch" / OMC Cobra 4.3 V6 / 432APRMED

      If you're going to keep that OMC Cobra, please for the love of everything good in the world, get an OMC factory service manual. Not a Clymers, Not a SELOC. You can find them on eBay.

      My boat repair website: http://transomfix.dcpolk.com

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      • #4
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        Re: 4.3 Yamaha V6 inboard

        First, do you have a jumper to connect to the distributor to lock the timing down? If you do, use the jumper and set the timing at 8BTDC. If you do not have a jumper, then you cannot set the timing.

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