9N will not start

krzan · Sep 29, 2017

Just re-built my 9n Tractor / like an idiot I cannot remember if it was a positive ground or not. how can I tell.. it trys to turn over but never starts

R Geiger · Sep 29, 2017

(quoted from post at 16:51:58 09/29/17) Just re-built my 9n Tractor / like an idiot I cannot remember if it was a positive ground or not. how can I tell.. it trys to turn over but never starts

6 volt machine are usually positive ground and 12 volt ones are usually neg ground.

normal drill, check for spark to the plugs and check for fuel thru the carb. some rebuilds aare hard to start and people do pull start them at times. Do you have oil pressure while cranking it over?

Bruce (VA) · Sep 29, 2017

Positive or negative ground isn't keeping it from starting.

6 volt or 12 volt?

Don?t guess at the cause of the problem; guessing can get expensive. And leave you breathless chasing every guess.......it could be this, it could be that......just troubleshoot the problem and leave the guess work for buying Lottery tickets.

As R Geiger said, check for spark and fuel.

You need to answer 2 questions before you do anything else:

With the bolt in the carb bowl removed and the gas on, will the fuel flow fill a pint jar in less than 2 minutes?

Next, get out your adjustable gap spark checker * , open the gap to 1/4", hook it up, turn the key on and crank the engine. Does the spark jump 1/4"? Post back with the answers.

And do not buy a new part for the tractor until you can answer this question: how do I know the part on the tractor is defective?

* Don't own an adjustable gap spark checker? Buy one! Not a test light! Until then, take an old plug, open the gap 1/4" ground it to the head & look for spark. It?s not the color of the spark that counts; it?s the distance it jumps.
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9N will not start

krzan

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R Geiger

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Bruce (VA)

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