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jd l120 mower issue #7610332
06/22/22 04:45 PM
06/22/22 04:45 PM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
trapper

Joined: Feb 2007
Posts: 1,098
Ohio
Hey all,

So i rebuilt the transmission on the JD and it runs great. The mower did just fine cutting before it did but now when i engage the blades the deck quakes and it shuts off. Everything looks attached and nothing out of place. Doesnt matter if i got full power or alittle power...the deck shakes and the mower shuts off.

When the blades arent engaged. The mower runs like a champ in all the power settings, big difference with the rebuild.

the pullies dont seem bent, the belt looks to be in place...etc. just trying to get ideas. thanks!

Re: jd l120 mower issue [Re: BuckMink] #7610406
06/22/22 05:54 PM
06/22/22 05:54 PM
Joined: Dec 2006
Posts: 10,595
Oakland, MS
Drifter Offline
trapper
Drifter  Offline
trapper

Joined: Dec 2006
Posts: 10,595
Oakland, MS
There is a anti reverse switch that will do that if out of adjustment. It is there to keep you from being able to mow in reverse. As soon as it trips the mower will shut down. Mine is a 130


Experience only teaches the teachable.

Aldous Huxley









Life member NTA , and GA Trappers assoc .
Re: jd l120 mower issue [Re: BuckMink] #7610420
06/22/22 06:09 PM
06/22/22 06:09 PM
Joined: Dec 2006
Posts: 18,239
St. Louis Co, Mo
B
BigBob Online mad
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BigBob  Online Mad
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Joined: Dec 2006
Posts: 18,239
St. Louis Co, Mo
Might take a look at the blades too. If you sharpened them, and they're bent or out of balance they will rattle your teeth loose.


Every kid needs a Dog and a Curmudgeon.

Remember Bowe Bergdahl, the traitor.

Beware! Jill Pudlewski, Ron Oates and Keven Begesse are liars and thiefs!
Re: jd l120 mower issue [Re: BuckMink] #7610424
06/22/22 06:11 PM
06/22/22 06:11 PM
Joined: May 2016
Posts: 331
Illinois
D
DRF Offline
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DRF  Offline
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Joined: May 2016
Posts: 331
Illinois
Check the switch under the seat. I have same mower(2003) and it just slides in place but every now and then it works loose

Re: jd l120 mower issue [Re: BuckMink] #7610659
06/23/22 01:29 AM
06/23/22 01:29 AM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
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Joined: Feb 2007
Posts: 1,098
Ohio
Ok, thanks I'll check those out it's a used mower so I'll just swap out the blades since I'm doing the tran anyhow. Haven't sharpened then since I got the mower this year.

I disconnected the switch earlier so I could get off the mower if I had to, I'll plug that back in..just in case. .

Drifter, that's interesting. Don't recall an anti reverse switch but I'll look for one . It's hydro static, and I can mow in the reverse or forward.

Re: jd l120 mower issue [Re: BuckMink] #7610660
06/23/22 01:31 AM
06/23/22 01:31 AM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
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BuckMink  Offline OP
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Joined: Feb 2007
Posts: 1,098
Ohio
Oh, nvm I put a jumper on it..lol that's why I can go reverse without holding down that stupid button. First thing I did when I got that tractor.

Re: jd l120 mower issue [Re: BuckMink] #7610839
06/23/22 10:19 AM
06/23/22 10:19 AM
Joined: Dec 2006
Posts: 10,595
Oakland, MS
Drifter Offline
trapper
Drifter  Offline
trapper

Joined: Dec 2006
Posts: 10,595
Oakland, MS
Originally Posted by BuckMink
Oh, nvm I put a jumper on it..lol that's why I can go reverse without holding down that stupid button. First thing I did when I got that tractor.



In that case I would suspect the blade or blades got bent as don't think they are timed like some mowers.


Experience only teaches the teachable.

Aldous Huxley









Life member NTA , and GA Trappers assoc .
Re: jd l120 mower issue [Re: BuckMink] #7610841
06/23/22 10:26 AM
06/23/22 10:26 AM
Joined: Dec 2008
Posts: 1,996
centrel PA
K
Kevin Colpetzer Offline
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Kevin Colpetzer  Offline
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Joined: Dec 2008
Posts: 1,996
centrel PA
Check your spindles, sounds like one is loose or the bearings are shot

Re: jd l120 mower issue [Re: BuckMink] #7610890
06/23/22 11:26 AM
06/23/22 11:26 AM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
trapper

Joined: Feb 2007
Posts: 1,098
Ohio
Ha, believe it or not it was just the kill switch underneath the seat! Runs perfectly... Thanks, was really thinking it had to be something else when I could get off the tractor while it's idling.. well, it must still work with the kill switch unplug to mow. Nope. Thanks for the input.

Re: jd l120 mower issue [Re: Kevin Colpetzer] #7610892
06/23/22 11:28 AM
06/23/22 11:28 AM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
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Joined: Feb 2007
Posts: 1,098
Ohio
Originally Posted by Kevin Colpetzer
Check your spindles, sounds like one is loose or the bearings are shot


Glad it wasnt a spindle!

Re: jd l120 mower issue [Re: BuckMink] #7610896
06/23/22 11:31 AM
06/23/22 11:31 AM
Joined: Dec 2008
Posts: 1,996
centrel PA
K
Kevin Colpetzer Offline
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Kevin Colpetzer  Offline
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Joined: Dec 2008
Posts: 1,996
centrel PA
Glad you got it fixed up

Re: jd l120 mower issue [Re: BuckMink] #7610897
06/23/22 11:31 AM
06/23/22 11:31 AM
Joined: Dec 2006
Posts: 3,255
Pa
W
Wright Brothers Offline
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Wright Brothers  Offline
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Posts: 3,255
Pa
I need a wheel horse spindle, or three.
Had the motion control safety switch go bad. That took a while to cypher out.





Re: jd l120 mower issue [Re: BuckMink] #7611024
06/23/22 02:59 PM
06/23/22 02:59 PM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
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Joined: Feb 2007
Posts: 1,098
Ohio
huh, how did you narrow that one down? Not much wiring on this one, got enough of it in the dang cars let alone a lawn mower.

Re: jd l120 mower issue [Re: BuckMink] #7611046
06/23/22 03:44 PM
06/23/22 03:44 PM
Joined: Dec 2006
Posts: 3,255
Pa
W
Wright Brothers Offline
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Wright Brothers  Offline
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Joined: Dec 2006
Posts: 3,255
Pa
Remove one switch at a time and jumper wire them til it started.
Then went and bought the 12 buck switch.
I tried every way to use a multi meter, too many settings on this one for me.
Old guy at dealer said you can not test those.
But they keep us safe lol.





Re: jd l120 mower issue [Re: BuckMink] #7611436
06/24/22 12:15 AM
06/24/22 12:15 AM
Joined: Feb 2007
Posts: 1,098
Ohio
BuckMink Offline OP
trapper
BuckMink  Offline OP
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Joined: Feb 2007
Posts: 1,098
Ohio
Lol, right?! As well as things that arent suppose to be fixed or servicable yet they can be.

Re: jd l120 mower issue [Re: BuckMink] #7611541
06/24/22 08:14 AM
06/24/22 08:14 AM
Joined: Dec 2013
Posts: 12,315
Greene County,Virginia
R
run Offline
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run  Offline
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Joined: Dec 2013
Posts: 12,315
Greene County,Virginia
The jd. Belly mower that I run mows in reverse. But then again it's pretty old.


wanna be goat farmer.
Re: jd l120 mower issue [Re: BuckMink] #7611566
06/24/22 08:40 AM
06/24/22 08:40 AM
Joined: Dec 2006
Posts: 3,255
Pa
W
Wright Brothers Offline
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Wright Brothers  Offline
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Joined: Dec 2006
Posts: 3,255
Pa
I have a 1979 here I been wanting to get into.
Was told the jd green paint is way over priced.

My Son bought a new rider last year. What a hunk of junk compared to old iron.
But we wanted cheaper. <-- Careful what ya wish for.





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