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  #1  
Old 02-16-2025, 05:10 PM
NoSubstance NoSubstance is offline
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Default Starter/generator discharging
Hello

I inherited a Cub Cadet 105 from my uncle a few years ago. It always has electrical issues and I need to charge the battery after each use. I finally got around to investigating the issue and the starter generator seems to be putting out a negative charge. I have checked the wiring and it all looks good. I put on an extra starter generator and have the same issue. Do I have a voltage regulator problem?
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  #2  
Old 02-17-2025, 07:48 AM
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Billy-O Billy-O is offline
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Originally Posted by NoSubstance View Post
Do I have a voltage regulator problem?
It's possible.

What did you use to determine the generator has a negative charge? What were the readings? Or were you just looking at the volt/amp meter on tractor? And did you polarize the generator(s)? When swapping generators you need to have the right direction as in CW or CCW.
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  #3  
Old 02-17-2025, 04:15 PM
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Your generator will not "charge" negative, it will however, show a discharge on the amp meter if it is not charging and the battery will go dead.
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Old 02-17-2025, 09:07 PM
NoSubstance NoSubstance is offline
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It's possible.

What did you use to determine the generator has a negative charge? What were the readings? Or were you just looking at the volt/amp meter on tractor? And did you polarize the generator(s)? When swapping generators you need to have the right direction as in CW or CCW.
I looked at the amp meter and a digital multimeter. I did not polarize the generator, I didn't know that was needed. I got a box of parts from my uncle and I just swapped a new one in.

How do you polarize the generator?
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Old 02-18-2025, 11:06 AM
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Is the negative battery terminal connected to the tractor frame? Maybe someone hooked the battery up backwards.
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Old 02-18-2025, 11:15 AM
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I would check the regulator before I made anymore changes. There is a good video on them in the thread below.

https://www.onlycubcadets.net/forum/...ad.php?t=62802
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