1951 M No power to coil

av737doc · Aug 12, 2019

I just got the tractor. I was mowing and it started to backfire and died never to start again. Replaced the coil,sparkplugs,rotorcap and distributor cap. Still didn't run. I found the wiring was in bad shape so I replaced it. I'm not getting power to the coil?

centash · Aug 12, 2019

Ignition switch and or wiring to and from it.

Ben

M-MAN · Aug 12, 2019

There's an inline fuse above the battery.
Check it. Also try the other switch
positions to prove it. It will run in
every position but off.

James Howell · Aug 13, 2019

Agree with [b:654c4848f0]M-MAN[/b:654c4848f0] to "[i:654c4848f0]check inline fuse above the battery[/i:654c4848f0]".

Take a look at the [b:654c4848f0]Lamps and Wiring[/b:654c4848f0] diagram below.

Note the red wire from the NEGATIVE terminal on the ammeter through the inline fuse to the [b:654c4848f0]BAT[/b:654c4848f0] terminal on the switch.

Take a at the photos below.

Agree with [b:654c4848f0]M-MAN[/b:654c4848f0] to "[i:654c4848f0]try the other switch positions. It will run in every position but off[/i:654c4848f0]".

Take a look at the photo below.

Try either the [b:654c4848f0]HI[/b:654c4848f0] or [b:654c4848f0]LIGHTS[/b:654c4848f0] position.

Take a look at the [b:654c4848f0]Lamps and Wiring[/b:654c4848f0] diagram below.

Note the blue wire from the [b:654c4848f0]IGN[/b:654c4848f0] terminal on the switch to the NEGATIVE terminal on the coil.

You might consider using a test light on the NEGATIVE terminal on the coil to test the [b:654c4848f0]HI[/b:654c4848f0] and [b:654c4848f0]LIGHTS[/b:654c4848f0] positions.

Hope this helps.

John T · Aug 13, 2019

That's fairly easy to trace. Get your volt meter and/or 6/12 Test Light and find where voltage was lost. Have one lead to ground and probe for hot voltage with the other as follows: Start at the battery (has to be hot there I hope) then go to the Ammeter in and out then the fuse then Light Switch. I agree an open/blown fuse is a prime suspect but if not that look for a faulty switch that doesn't transmit voltage to the coil when ON or an open wire are my other suspects.

Let us know what it was, fuse or open wire or bad switch or something else ??????

John T

pcsaw · Aug 13, 2019

I had one that had a bad connection at the starter it
would turn over but the wire going to the switch
wasn?t getting good connection all the others have
great advice

av737doc · Aug 13, 2019

ok guys ...will try your advise!!! Thanks for all the help will let you know what the problem was.

old · Aug 13, 2019

A person needs to trouble shoot then parts never the other way around. When a tractor dies you need to
#1 check for a good blue/white spark at te coil wire and at al plug wires that will jump a 1/4 inch gap or more.
#2Pull the carb drain plug and make sure you have a steady flow of gas thta will fill a pint jar in less then 3 minutes.

av737doc · Aug 23, 2019

(quoted from post at 04:25:49 08/13/19) That's fairly easy to trace. Get your volt meter and/or 6/12 Test Light and find where voltage was lost. Have one lead to ground and probe for hot voltage with the other as follows: Start at the battery (has to be hot there I hope) then go to the Ammeter in and out then the fuse then Light Switch. I agree an open/blown fuse is a prime suspect but if not that look for a faulty switch that doesn't transmit voltage to the coil when ON or an open wire are my other suspects.

Let us know what it was, fuse or open wire or bad switch or something else ??????

John T

Hey guys....thanks for all the help !!!! I found I had a bad wire on the fusible link now have power to everything!!!! Again Thankyou

1951 M No power to coil

av737doc

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centash

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M-MAN

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James Howell

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John T

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pcsaw

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av737doc

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old

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av737doc

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