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  1. #1
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    Default tachometer

    Want to mount a tach on my boat, currently does not have one. Was looking at model 6088 by equus, from O'Reilly. Online $80, in local store - $40.
    Is their a difference from auto to marine TACHS? Or is a tach a tach?
    Going on a 04 g3 1756 w/50hp Yamaha four stroke. Only gauge on the boat is fuel, which does not read correctly.
    Any insight greatly appreciated.
    Drinkin coffee, missin fish.

  2. #2
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    Check out tiny tach............ very affordable easy install and has a built in hour meter
    Three can keep a secret................If two of them are dead! (Benjamin Franklin)

  3. #3
    Barnacle Bill's Avatar
    Barnacle Bill is offline Super Mod and 2014 Crappie.com Man of the Year * Crappie.com Supporter
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    Auto tachs and marine tachs are different and not interchangeable (outboards). Marine tachs must be set for the number of pulses received from the coils on the stator. The most common setting is 6P but that does vary some with the different motors and horse power. A 50 HP Yamaha (4 stroke) has 12 poles producing 6 pulses.
    Fair Winds and Following Seas

    Bill H. PTC USN Ret
    Chesapeake, Va


  4. #4
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    Thank you both very much!
    Drinkin coffee, missin fish.

  5. #5
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    Tiny Tac +1. I have one on my outboard.
    USAF Retired and fishing!


  6. #6
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    Quick follow up question as it seems like the right kind of place. I know the tach on my boat is set to the wrong number of pulses, but I have no idea what it should be set to. Is it easy enough to experiment with it? If anyone knows I have a 150 Mercury, inline six. I think they were called towers of power back in the day...

  7. #7
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    Barnacle Bill is offline Super Mod and 2014 Crappie.com Man of the Year * Crappie.com Supporter
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    Quote Originally Posted by rcornish View Post
    Quick follow up question as it seems like the right kind of place. I know the tach on my boat is set to the wrong number of pulses, but I have no idea what it should be set to. Is it easy enough to experiment with it? If anyone knows I have a 150 Mercury, inline six. I think they were called towers of power back in the day...
    It should be set for 6 pulses.
    Fair Winds and Following Seas

    Bill H. PTC USN Ret
    Chesapeake, Va


  8. #8
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    Tiny Tach is in Burr Ridge Illinois, right off interstate 55, between Lemont and Country Side.

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