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1974 140 not starting


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#1 JC 616 OFFLINE  

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Posted June 25, 2016 - 04:39 PM

New plug, wire, coil, condenser & still nothing. Just cranks. One thing though if I have the key in the run position I can turn the lights on. As soon as I turn it to start the lights turn. And I'm not getting any spark. Has anyone else had this issue?

#2 Trav1s ONLINE  

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Posted June 25, 2016 - 04:46 PM

Do you have voltage at the coil? 



#3 massey driver ONLINE  

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Posted June 25, 2016 - 04:56 PM

If you suspect a bad switch you can run a jumper wire straight from the + terminal of your battery to the + side of the coil. Using a test light check to see if you have power at the points , the points have to be open in order for this to work. Doing this check will show that the coil is good and also the wire leading from the coil to the points is OK.



#4 JC 616 OFFLINE  

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Posted June 25, 2016 - 05:15 PM

I don't if I have voltage. The bulb in my test light is burnt out. Have to go get a new bulb. And I put new points on it too. I'll have to try that as soon as I get a new bulb.

#5 JC 616 OFFLINE  

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Posted June 25, 2016 - 05:16 PM

And my first post was supposed to say when I turn it to start position the lights turn off

#6 JC 616 OFFLINE  

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Posted June 25, 2016 - 05:19 PM

Another thing couldn't I just use my truck and hook jumper cables up and hook the ground on a metal piece and then touch the positive end on the starter bolt. Had an old rototiller I used to start that way.

#7 massey driver ONLINE  

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Posted June 25, 2016 - 08:31 PM

You could do that to make the starter run and spin the motor over.That wouldn't give you any spark.You do need to have live power to activate the coil etc:to create spark. Almost forgot does your tractor have any safety switches any where. I have a old 212   [1979] model and it have a couple that have been dis connected.


Edited by massey driver, June 25, 2016 - 08:35 PM.

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#8 JC 616 OFFLINE  

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Posted June 25, 2016 - 08:57 PM

Well did that and it just cranked so starter spins. It may have on the hydro lever cause there's 2 prongs on the backside of the neutral button but there's no wires going to it. I'm pretty sure it has ran this way though by the previous owner

#9 JC 616 OFFLINE  

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Posted June 25, 2016 - 09:01 PM

I don't have a good battery so I booked jumper cables up from my truck battery while it was running and hooked them up to the battery cables on the tractor. The switch clicks like its working but doesn't even attempt to turn the engine over and the same thing with the headlights happened.

Edited by JC 616, June 25, 2016 - 09:02 PM.


#10 JBRamsey OFFLINE  

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Posted June 25, 2016 - 09:55 PM

Don't buy any more parts. Get a wiring schematic and make sure it's wired correctly. After confirming it is or is not wired correctly, make any corrections and fix any corroded and loose connections. Then see what you have. If you still have issues, get your voltmeter and start seeing what you have where. Test lights give you no numbers. Even the $6 multimeter from HF is better than a test light. Plus poking holes in your wire insulation with a test light probe can create many problems later.

Good luck.

#11 KennyP ONLINE  

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Posted June 26, 2016 - 06:56 AM

Look for a PM in a few minutes.



#12 Trav1s ONLINE  

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Posted June 26, 2016 - 07:32 AM

I'd put my money on a wiring issue.

 

The Neutral safety switch is a simply Compress to close/release to open circuit.  At some time, the switch was bypassed on my 120 by simply connecting those two connectors.  The NSS could be bad and that is way it is bypassed.  



#13 JC 616 OFFLINE  

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Posted June 26, 2016 - 07:35 AM

Well here is the back of the switch and one random orange wire going to nothing at allIMG_20160626_083108_525.jpg IMG_20160626_083154_456.jpg

#14 KennyP ONLINE  

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Posted June 26, 2016 - 07:48 AM

Well here is the back of the switch and one random orange wire going to nothing at allattachicon.gifIMG_20160626_083108_525.jpgattachicon.gifIMG_20160626_083154_456.jpg

That orange wire may come from the headlight switch for a lighter socket. In the second pic above you can see the pink wire. That is the feed to the coil. If it has no power when key is on, it won't run!


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#15 JC 616 OFFLINE  

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Posted June 26, 2016 - 08:33 AM

That orange wire may come from the headlight switch for a lighter socket. In the second pic above you can see the pink wire. That is the feed to the coil. If it has no power when key is on, it won't run!


Thanks. I will for sure be checking that out.




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