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  1. #1
    New Member
    Join Date
    Mar 2008
    Posts
    9
    Location
    Eastern Ne
    Tractor
    Satoh 650G

    Default Coil for Satoh 650G

    Anybody know what a suitable replacement coil would be for a Satoh 650G? The iginition system has had no modifications.

  2. #2
    New Member
    Join Date
    Mar 2008
    Posts
    9
    Location
    Eastern Ne
    Tractor
    Satoh 650G

    Default Re: Coil for Satoh 650G

    I'm finding two types of "universal" coils at Tractor Supply Co. One is for 12V tractors with external resistance and one is for tractors without external resistance.

    Does anyone know if the Satoh 650G (gas) has external resistance? Or if either of these coils would work? If I used the wrong one would anything get damaged?

    I looked at the wiring diagram in my manual and also traced out the wiring on the tractor and couldn't find anything that looked like an external resistor but I really am not that up on ignition systems so I might have missed it. The ignition system on my Satoh appears to be completey stock - I don't think it has been modified in any way.

  3. #3
    Gold Member
    Join Date
    Dec 2003
    Posts
    364
    Location
    OH
    Tractor
    Ford 851/ JD 770 MFWD

    Default Re: Coil for Satoh 650G

    I believe that they use an external resistor.

  4. #4
    Platinum Member Bill Barrett's Avatar
    Join Date
    Jul 2006
    Posts
    671
    Location
    midwest
    Tractor
    Kubota L3130, Satoh G650, Case 580, Case 446

    Default Re: Coil for Satoh 650G

    I got one from Bill at Valley, was about same price as local, and the right one.

  5. #5
    New Member
    Join Date
    Mar 2008
    Posts
    9
    Location
    Eastern Ne
    Tractor
    Satoh 650G

    Default Re: Coil for Satoh 650G

    Well, before I saw your two posts I picked up a Universal coil at TSC that was designed for 12V tractors with no external resistance. The tractor fired right up and seemed to run fine though I couldn't test it under any load because I'm working on the seat right now and it would be a bit uncomfortable with the seat off.

    I figured that I should start with this coil because I figured the other one designed for an external coil would provide a very hot spark and wear out the points quickly if my tractor didn't have an external resistor (and I certainly couldn't find one).

    At least that's my primitive understanding of the ignition system. I guess if I find that it is hard to start in cold weather or with a low battery then I might have to reconsider whether I have the right coil. But with all the cranking I did before I figured out the old coil was bad I think the battery was pretty low when I tested the new coil.

  6. #6
    Platinum Member Bill Barrett's Avatar
    Join Date
    Jul 2006
    Posts
    671
    Location
    midwest
    Tractor
    Kubota L3130, Satoh G650, Case 580, Case 446

    Default Re: Coil for Satoh 650G

    Mine starts very easy, it's cold blooded though. I think you will find you'll go through points fast anyway. Good Luck.

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