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Thread: Firing Order

  1. #1
    Cadet
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    Default Firing Order

    I have an Evinrude 70horse model#709H9A. I changed plugs and checked rotor, I was wondering if anyone knew the firing order, stupid me forgot to label first. Thank You.

  2. #2
    Moderator OBJ's Avatar
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    Default Re: Firing Order

    Welcome Kirkman!I'm taking for granted that this is a three cylinder? The model number you posted doesn't show up in the model guide anywhere. Would it be 70973? This would be a 1979. If the plate on the transom bracket is messed up, look on the block for a large welch plug. The model and serial number will be there also.Back to the "timing". If the coils are stacked next to the cylinders, just run the spark plug leads to the corresponding cylinder. Top coil > top cylinder, middle coil > middle cylinder, bottom coil > bottom cylinder.
    When in doubt...use the manual

    Rayland, Ohio....Along the Muddy Banks of the Mighty Ohio River.

  3. #3
    Admiral
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    Default Re: Firing Order

    70979A is also a 1979 model.

  4. #4
    Moderator OBJ's Avatar
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    Default Re: Firing Order

    Hmmmmmmm.....my reference book only lists 70973....the web page list's 70973/70979 as 1979.Thanks ob.... :-)
    When in doubt...use the manual

    Rayland, Ohio....Along the Muddy Banks of the Mighty Ohio River.

  5. #5
    Cadet
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    Default Re: Firing Order

    Yes it is a 3-cylinder and I am sure it is a 1979...Thank you for your help

  6. #6
    Moderator OBJ's Avatar
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    Default Re: Firing Order

    OK Kirkman.....hope we got ya' straight on it.....even if we get confused on model numbers.......
    When in doubt...use the manual

    Rayland, Ohio....Along the Muddy Banks of the Mighty Ohio River.

  7. #7
    Cadet
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    Default Re: Firing Order

    Actually it has a cap with 3 spark wires coming out. Would anyone know where each wire comes to each plug? Thanks again

  8. #8
    Admiral
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    Default Re: Firing Order

    We must have our lines crossed somewhere on the year model.A 79' 70 hp engine doesn't have a cap or rotor to check,but a powerpack,timer base, and three individual coils.

  9. #9
    Cadet
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    Default Re: Firing Order

    OK maybe this will help....It is a Crysler Skier 700. Model # 709H9A Serial # 4366. It has 3 cylinders and says 70hp on the tag on motor. I am new to boats so I might really have confused a bunch of you....I am truly sorry. Aagin Thanks for any help?Kirkman24

  10. #10
    Cadet
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    Default Re: Firing Order

    Also it has a rotor cap with 3 spark plug wires coming out, I need the firing order for that. Again sorry for confusing you......Kirkman24

  11. #11
    Senior Chief Petty Officer
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    Default Re: Firing Order

    We'll move your post over to the Chrysler/Force repair forum Kirkman. This is where you should have posted. It happens.....

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