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Ford 9N, 2N & 8N Discussion Forum

Only runs with the start button pushed

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Author  [Modern View]

06-15-2020 16:48:18

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I have a Ford 8N that ran great all winter plowing snow. It is a 12v system. This past week it wouldn't start. Just made one click. I replaced the solenoid. The old selonoid had 4 posts. The new solenoid is an original part with 3 posts. One post is labeled BAT and that is where the cable from the kill switch attaches. The oppisite side is the cable to the starter and has a wire that goes to the amp meter. The middle post, and smallest, has a blue and red wire that goes to the starter button by the gear shift.

The new solenoid is hooked up and the engine turns over and eventually starts. BUT here is the problem: the engine only runs as long as the starter button is pushed down. As soon as I let up on the button it loses spark and quits. If I push the button right away it fires back up and runs. To keep it running I have to keep the starter button depressed. The starter is still spinning but has disengaged while the engine is running.

What is my issue? Thanks in advance for the help.

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06-16-2020 21:48:30

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 Re: Only runs with the start button pushed in reply to RedandGrey, 06-15-2020 16:48:18  
you're welcome, happy to help :)

i've found a digital camera to be my friend when i take stuff apart.

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06-15-2020 18:24:35

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 Re: Only runs with the start button pushed in reply to RedandGrey, 06-15-2020 16:48:18  
HFJ. That did the trick. I switched the wire from one post to the other and it started right up and ran fine. Thank you very much.

I was so careful to remember where each wire went and thought I had it right, but nope. The grass is now shorter.

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06-15-2020 17:34:53

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 Re: Only runs with the start button pushed in reply to RedandGrey, 06-15-2020 16:48:18  
your issue is that all the tractor's electricity flow is being controlled by the solenoid being closed. move the wire to the ammeter to the other large terminal.

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