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  #1  
Old 02-26-2017, 08:40 PM
brianzable brianzable is offline
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Join Date: Feb 2017
Location: Wisconsin
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Question Tractor keeps trying to start
Hi everyone,

I'm new to Cub Cadets and picked up a 129 to restore recently. The tractor ran great the few times that I used it but the other day I went to start it and the engine wouldn't stop cranking. After pulling the key out, it kept going and going until there was a ton of smoke coming from the charge indicator. I ended up disconnecting the battery to get it to shut down.

I'm going to need a new charging indicator, but I'm not quite sure what else I should look into to figure out what went wrong here. I'm not the most knowledgeable when it comes to electrical issues but any tips would be appreciated!
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  #2  
Old 02-26-2017, 08:47 PM
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Billy-O Billy-O is offline
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Could be in the voltage regulator.
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  #3  
Old 02-26-2017, 09:17 PM
R Bedell R Bedell is offline
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Most likely one of two conditions. (A) The Voltage Regulator has some internal contacts Sticking or welded together, or (B) The Starter Solenoid has some internal contacts Sticking or welded together.

AS A TEST......Remove the Blue Wire from the "G" terminal on the V/R. Hook up your battery and tell us what you find.
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Old 02-26-2017, 10:35 PM
brianzable brianzable is offline
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Quote:
Originally Posted by R Bedell View Post
Most likely one of two conditions. (A) The Voltage Regulator has some internal contacts Sticking or welded together, or (B) The Starter Solenoid has some internal contacts Sticking or welded together.

AS A TEST......Remove the Blue Wire from the "G" terminal on the V/R. Hook up your battery and tell us what you find.
I'll likely get around to testing this over the weekend. I'm assuming this test would also involve me trying to start the mower, correct?

I'm pretty new to small-engines in general so this may be a silly question. Is it possible that the engine starts, but the electrical system keeps trying to start it again and I do some damage to the engine?
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Old 02-26-2017, 11:47 PM
J-Mech J-Mech is offline
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Quote:
Originally Posted by brianzable View Post
I'll likely get around to testing this over the weekend.
As in next weekend??


Quote:
Originally Posted by brianzable View Post
I'm assuming this test would also involve me trying to start the mower, correct?
No. Just disconnect the wire, then hook up the battery. If something is stuck in the VR, it will immediately try to start when you hook up the battery.


Quote:
Originally Posted by brianzable View Post
I'm pretty new to small-engines in general so this may be a silly question. Is it possible that the engine starts, but the electrical system keeps trying to start it again and I do some damage to the engine?
Yes. Only it won't damage the engine, but it will damage the S/G (starter/generator) and likely the V/R (voltage regulator), or both.
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Old 02-27-2017, 12:34 AM
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Lanceskene Lanceskene is offline
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Might be a good idea to pull out the spark plug before testing so it cant start, you just want to see if it will still turn over without the G wire.
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