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  • Tachometer Issue

    Back in 1977, I purchased a Tachometer for my 1966 60HP Evinrude Outboard Motor. It worked Great for 30+ years. A couple years ago this motor burnt up and has been replaced with a 1975 85HP Evinrude Outboard.

    Can I use this Tach for the '75 85HP Motor? The '66 60HP Motor had a Magneto with a single coil and this is where the Tach connected -- to the Coil. The '75 85HP Motor has a Gray wire in the Remote Control and, per wiring diagram, connects to the Rectifier, picking up Tach signal via the alternator. I HAVE NO RECTIFIER -- place exists for it but, it's not there (obviously, I don't have an Alternator----have the Yellow and Yellow/Gray wires from Stator but, they do not connect to anything). The '75 85HP Motor uses 4 individual Coils - one for each cylinder. Can I connect this Old Tach to one of the Coils? Tach has 4 Poles on back ---- 'C' - '2' - '3' - '4'. There is currently a jumper wire from Pole 'C' to Pole '2'. If I can connect to one of the Coils, which Poles on back of Tach should be connected?

    If I got a Rectifier, could I use this Gray wire in the remote (of course, after connecting to rectifier) and would the Tach I have work? If so, which Poles on back of Tach should be connected.

    I purchased this 1966 Duracraft Boat, 1966 60HP Evinrude with a 1966 Dilly Trailer in 1977 for $900. I have certainly got my moneys worth out of it. Am currently restoring entire Boat again (restored it in 1988 and again in 1997).

    Thanks for any Help.....................

  • #2
    You would need an alternator driven tach(new one) connected to the gray wire set for 10 poles.
    Regards
    Boats.net
    Evinrude Outboard Parts

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    • #3
      D A N G ! Didn't want'a hear that but, 'preciate the response............

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      • #4
        Ordered a Tach

        Just ordered a Digital OMC Tach 175756 off EBay (from SeaWay Marine). I kind'a THINK it'll work on this 1975 85HP Evinrude ---- Can anyone Confirm? Here's Info on EBay about the Tach and the Link to EBay:

        Johnson Evinrude Outboard Digital Tach Tachometer New 175756 | eBay

        JOHNSON & EVINRUDE DIGITAL TACH!! Brand new in original packaging these digital tachs make a nice upgrade or replacement for your old analog tach. Works with 2 stroke Johnson & Evinrude outboards, including Ficht etc. Has the easy to wire 3 prong plug that fits most side mount control boxes and other OMC wiring harnesses. Can also be wired easily to other systems.

        Comes with mounting bracket,ring terminals and instructions.
        Will also in many stern drive installations with 4, 6 or 8 cylinder engines.
        Takes the standard large size gauge hole 3 3/8".
        Part # 175756
        Included instructions tell you how to make this tach work on Johnson/Evinrude 1968-1972 with battery CD ignition, no mods required for newer engines and simple plug in for 1978 and newer.

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        • #5
          Gonn'a TRY to add an Attachment here (Never done this before).

          Here's Picture of my 1966 Duracraft Boat with the Old 1966 Evinrude 60HP Outboard taken back in 2007 at Apache Lake, AZ.

          ALRIGHT ------ It Worked !!
          Attached Files

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          • #6
            NEW Digital Tach Installed, Motor started and Tach Working Great. Listed the Old Tach on EBay. Marine OMC Vintage 0 6000 RPM Tachometer | eBay

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