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Old 05-05-2018, 09:10 PM   #1
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Riding Mower Issue


I have John Deere D105 riding mower

The battery keeps draining on me. I have tried trickle charge no luck, replaced the alternator which worked for one year. As soon as the temperature dropped and I didnt disconnect the battery right away it died. The tractor is about ten years old

I replaced the battery this spring and it still wont start. Is it possible the alternator again? Or something else? I have checked all the wiring and dont see anything exposed that would cause possibly a short.

Any suggestions or thoughts would be great

Thanks in advance
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Old 05-05-2018, 09:32 PM   #2
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Re: Riding Mower Issue


Check the voltage regulator. usually mounted right on the engine block.

Sometimes they get corroded or internal short causes them to malfunction. Can be easily checked with multi-meter. At over 10 years old it may just need to be replaced.
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Old 05-05-2018, 09:42 PM   #3
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Re: Riding Mower Issue


Maybe this utube video might help you out.

Hope you get it figured out soon dlam.

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Old 05-05-2018, 09:43 PM   #4
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Re: Riding Mower Issue


You say "won't start", do you mean that it won't crank, or does it crank, but then won't start?


ED
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Old 05-05-2018, 10:01 PM   #5
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Re: Riding Mower Issue


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Originally Posted by de-nagorg View Post
You say "won't start", do you mean that it won't crank, or does it crank, but then won't start?


ED
With a new battery it will crank once, then nothing. I believe I get power to the lights, I cant recall right now...

I can jump start it off my car and it turns right over
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Old 05-05-2018, 10:17 PM   #6
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Re: Riding Mower Issue


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Originally Posted by jmon View Post
Maybe this utube video might help you out.

Hope you get it figured out soon dlam.

Thanks for the video, will check in the morning!
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Old 05-05-2018, 11:15 PM   #7
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Re: Riding Mower Issue


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Originally Posted by dlam9946 View Post
With a new battery it will crank once, then nothing. I believe I get power to the lights, I cant recall right now...

I can jump start it off my car and it turns right over
Did you buy a junk battery?

Maybe a trickle charge overnight will get you mowing.



ED
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Old 05-09-2018, 09:13 PM   #8
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Re: Riding Mower Issue


Quote:
Originally Posted by jmon View Post
Check the voltage regulator. usually mounted right on the engine block.

Sometimes they get corroded or internal short causes them to malfunction. Can be easily checked with multi-meter. At over 10 years old it may just need to be replaced.
The voltage regulator is actually what I replaced last year. Is it possible it could have gone bad again? Possibly, but could it be something else?

The local John Deere store referred to the voltage regulator as the alternator. Sorry for the confusion
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