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  1. #1
    Bronze Member Ford851's Avatar
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    Default Starter Solenoid

    Anyone know the Ford 851 4 post starter solenoid part number? What is the Napa equivalent part number? All I can find are the 8n or 9n part numbers. Are they the same as 800 series solenoids. Napa is closer and probably more reasonable. I know I've seen it posted somewhere, but my searches aren't turning up any good results.

    This bring up the point, "how do you narrow a search"? Each time I put in a search line I get 2500 posts. Are searches done on the whole site or can you narrow them down to a single forum? What is the delimiter used for searches?

    Best regards,
    Ford851

  2. #2
    Veteran Member sam5570's Avatar
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    new holland tn70

    Default Re: Starter Solenoid

    i don't know the part number but if sound guy or some of the vintage tractor experts see this they can help might send him pm good luck

  3. #3
    Old Timer Soundguy's Avatar
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Starter Solenoid

    311007 is a ford 4 poster, 6v oe number
    st541 is the napa #

  4. #4
    Old Timer Soundguy's Avatar
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Starter Solenoid

    311007 is a ford 4 poster, 6v oe number
    st541 is the napa #

  5. #5
    Bronze Member Ford851's Avatar
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    Default Re: Starter Solenoid

    Thanks soundguy. If I am now running a 12 volt system shouldn't i be using a 12 volt solenoid to close the starter circuit? I think the two center posts are just a coil that when energized closes the contacts for the heavier battery/starter circuit. There must be some logic behind why a 6v solenoid is used. Bottom line: it works so use it

    Thanks,
    Ford851

  6. #6
    Old Timer Soundguy's Avatar
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Starter Solenoid

    they are a simply isolated base solenoid. the 2 small posts just conenct to the field coil.. energize them and the solenoid pulls in and connects the 2 larger contacts.

    thus power from the key to one small post, and the safety starter button ( ground ) to the other small post.

    the 6v solenoid works FINE on 12v.

    if you want to get very particular about it, you can lookup the solenoid to a diesel 4 cyl ( 59-64 ), and it will have a 12v 4 post solenoid...

    I've yet to ever change to a 12v solenoid..

  7. #7
    Bronze Member Ford851's Avatar
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    Default Re: Starter Solenoid

    Thanks sound guy,

    Got it Really no need to change as you point out. Just curious. Too lazy to pull the specs.

    Will be changing to 4 post when I install stuff to get back to original configuration.

    See ya,
    Ford851

  8. #8
    Old Timer Soundguy's Avatar
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    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: Starter Solenoid

    311006 is the oem #

    ST542 napa echlin.. 12v



  9. #9
    Bronze Member Ford851's Avatar
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    Default Re: Starter Solenoid

    Thanks

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