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Thread: 25 hp mercury

  1. #21
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    I would put a timing light on that and see where the base timing is at. A steady 6-8 degrees BTDC at cranking speed is what you're looking for. If it's all over the place, the trigger would be the first thing I'd look at. If it's way advanced, someone has probably cranked the adjustment screw in as far as they could.
    I'd rather be fishing.

  2. #22
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    I will check that out. Thanks

  3. #23
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    You ever get that 25 lined out?
    I'd rather be fishing.

  4. #24
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    I went to try with timing light and having problems just to get it started. I think the switch box took a crap

  5. #25
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    Next step. I pulled both plugs out of motor and zip tyed them against head bolts for ground. took of rewind off motor and put a socket on bolt holding fly wheel on. put socket on bolt and spun it with half inch drill. I have no spark at all now. What do i do now

  6. #26
    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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    Quote Originally Posted by Randy 1 View Post
    Next step. I pulled both plugs out of motor and zip tyed them against head bolts for ground. took of rewind off motor and put a socket on bolt holding fly wheel on. put socket on bolt and spun it with half inch drill. I have no spark at all now. What do i do now
    Did you have the key turned on? Keep in mind the motor has to turn at least 300 RPM to start.
    Fair Winds and Following Seas

    Bill H. PTC USN Ret
    Chesapeake, Va


  7. #27
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    This is a rope start motor. I disconnected the wire to kill switch.

  8. #28
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    Here is what I did today to the mercury. I pulled off flywheel to try to find out whats going on with problems. Well I think I found out problem. One of the magnets came lose and was out of position. One was at 12 and one was at 7 ;30 . Also I think switch box died.

    Randy

  9. #29
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    I want to thank Barnacle Bill and Sliderman for all your help you have gave me on my mercury outboard.

    Randy


    Likes sliderman LIKED above post

  10. #30
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    New switch box installed today and WOW shes alive. Thanks so much for your help

    Randy
    Likes wannabe fisherman LIKED above post

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