John deere 425 pto problems

markwiszMay 29, 2010

Today I was cutting my yard,and my mower quit.I never hit anything,I was just on a flat piece of yard.The pto light was still on but no mower.I shut the pto off and proceeded to the shop to see what was wrong.Once at the shop I engaged the pto once again.The light came on,but the pto didn't engage.I turned around to look at the back of the tractor,and nothing but smoke coming from the 2 wires that go into the back of the rear end.I then looked under the deck and turned the blades by hand,all 3 blades turn and the pto shaft turns as well,so nothing appears to be jammed.Does anyone have any ideas on what is causing this to happen,and how I can fix it?It is a 1996 with 1320 hrs on the dial,I am the 2nd owner,the first owner being my father,we both have serviced and maintained the tractor faithfully.This is really the first major problem either of us have had with it. Hopfully someone might have an idea how to fix it,as I have 3.5 acres of grass to cut on my property and I only have 1/2 an acre done lol.

Thank you for reporting this comment. Undo
markwisz

Well Mownie I owe you a huge thankyou.It took 4 days for the part to come in,but well worth the wait.It took me 15 minutes to change it,at a cost of $134 taxes in and back in buisness.Cut my 3.5 acres last night with no troubles at all.Thanks a million for the help.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well mownie I did have the top fuse blow on me last week.It was a 15amp fuse,and thats what I replaced it with,(according to my manual)I finished the yard last week and parked the tractor back in the shop.This happened this week after about 15 minutes of use.I did check the fuses again,and they are not blown.The wires are burnt right at the houseing where they go into the housing at the solenoid.You are very correct and know exactly what my set up is.So I guess I just need to order the solenoid and a new wire harness from john deere in the morning.Thankyou so muck for helping me fix the problem.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well Mownie I owe you a huge thankyou.It took 4 days for the part to come in,but well worth the wait.It took me 15 minutes to change it,at a cost of $134 taxes in and back in buisness.Cut my 3.5 acres last night with no troubles at all.Thanks a million for the help.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well mownie I did have the top fuse blow on me last week.It was a 15amp fuse,and thats what I replaced it with,(according to my manual)I finished the yard last week and parked the tractor back in the shop.This happened this week after about 15 minutes of use.I did check the fuses again,and they are not blown.The wires are burnt right at the houseing where they go into the housing at the solenoid.You are very correct and know exactly what my set up is.So I guess I just need to order the solenoid and a new wire harness from john deere in the morning.Thankyou so muck for helping me fix the problem.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well Mownie I owe you a huge thankyou.It took 4 days for the part to come in,but well worth the wait.It took me 15 minutes to change it,at a cost of $134 taxes in and back in buisness.Cut my 3.5 acres last night with no troubles at all.Thanks a million for the help.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well Mownie I owe you a huge thankyou.It took 4 days for the part to come in,but well worth the wait.It took me 15 minutes to change it,at a cost of $134 taxes in and back in buisness.Cut my 3.5 acres last night with no troubles at all.Thanks a million for the help.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well mownie I did have the top fuse blow on me last week.It was a 15amp fuse,and thats what I replaced it with,(according to my manual)I finished the yard last week and parked the tractor back in the shop.This happened this week after about 15 minutes of use.I did check the fuses again,and they are not blown.The wires are burnt right at the houseing where they go into the housing at the solenoid.You are very correct and know exactly what my set up is.So I guess I just need to order the solenoid and a new wire harness from john deere in the morning.Thankyou so muck for helping me fix the problem.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
markwisz

Well mownie I did have the top fuse blow on me last week.It was a 15amp fuse,and thats what I replaced it with,(according to my manual)I finished the yard last week and parked the tractor back in the shop.This happened this week after about 15 minutes of use.I did check the fuses again,and they are not blown.The wires are burnt right at the houseing where they go into the housing at the solenoid.You are very correct and know exactly what my set up is.So I guess I just need to order the solenoid and a new wire harness from john deere in the morning.Thankyou so muck for helping me fix the problem.

    Bookmark   December 2, 0002 at 12:07AM
Thank you for reporting this comment. Undo
rdaystrom

Sounds like the electric clutch burned out. By that I mean the electro magnetic coil inside it finally failed. They tend to short over a long period of time. An ohm meter reading across the coil wires usually shows a lower reading than a new coil would. (Something like 1.5 ohms or less probably bad. 3 ohms or more = good on common clutches.) The clutch is usually expensive ($160 to $260 average) but fairly easy to replace. Make sure your wiring isn't melted and the PTO switch still works. Charge and service your battery.

    Bookmark   May 30, 2010 at 9:39AM
Thank you for reporting this comment. Undo
mownie(7)

RD, you are talking apples & oranges here sir.
425 & 445 features a gear type PTO system where the PTO shaft emerges from the front of the rear axle case to power a gear driven MMM deck.
Markwisz, you see smoke coming from the two wires that go into the rear axle housing. You have located the wires that power the PTO solenoid.
Most likely the solenoid has shorted internally and will have to be replaced. The fact that you see smoke might be proof that the solenoid coil wiring (which is very small wire size) has shorted and burned up. But, it might also indicate that the OEM fuse for that circuit has been replaced with a larger ampacity fuse.
Whatever you find regarding the burned out PTO solenoid, please double check to confirm that the fuse has been been replaced with a higher capacity fuse.
Fuses are meant to fail when an electrical short or overload occurs. That fact makes me wonder why you are seeing smoke as the second indicator (mower quit being the first) of trouble instead of finding a blown fuse, and that fuse blows again and again when you replace it.???
It could be that the wires that are smoking are too small to blow the fuse in the particular place of the coil the short occurred, but it could be due to a heavier than spec fuse having been put in place at an earlier time (time bomb).

Here is a link that might be useful: 425 PTO solenoid

    Bookmark   May 30, 2010 at 11:12AM
Thank you for reporting this comment. Undo
mownie(7)

OK, good. Mark, be sure you look very closely at the inside of the connector where the solenoid pigtail plugs to the tractor harness. If you see any green coloration of the metal contact terminals inside either half of the connector, this might have contributed to the failure of the solenoid (green = corrosion = high resistance = too much current draw and build up of heat in the solenoid coil.
If you do find evidence of corrosion in either half of the connector, you probably should consider cutting the connectors off and splicing the new solenoid (minus connector) directly to the tractor harness.
If you do need to do this be sure you use high quality butt splice terminals (crimp compression splices) with heat shrinkable tubing to seal up your repair completely.
Of course if you do not see any signs of corrosion in the connector halves, you are safe to reuse the OEM configuration. Solenoids of this type generally do generate some heat in operation and that can lead to eventual break down of the insulating "shellac" coating on the wires and a short can occur after that happens.
And post back your results please.

    Bookmark   May 30, 2010 at 4:05PM
Thank you for reporting this comment. Undo
rdaystrom

Yea, I had apples and oranges all mixed together on that one. Sorry about that. I was thinking about electric pto clutches when I first read the question.

    Bookmark   May 31, 2010 at 12:20AM
Thank you for reporting this comment. Undo
mownie(7)

You are very welcome sir. Stay safe and good luck.

    Bookmark   June 4, 2010 at 12:22PM
Thank you for reporting this comment. Undo
deeredoctor(z8TX)

At the factory school they pulled the plunger out from under the sol to simulate a PTO sol failure, lol...

    Bookmark   June 13, 2010 at 2:57AM
Thank you for reporting this comment. Undo
johndeere425

f.y.i you can use a meyer snowplow solinoid as the magent

    Bookmark   August 7, 2011 at 5:46PM
Thank you for reporting this comment. Undo
jnd425prblm

just got a 425 for free and in the process of fixing it. everything is good just needs rear transaxle fluid and the pto wont work. the red light on the ignition module does not come on either does the yellow dash light. i have tested all the sensors. im thinking its somewhere in the electrical because the lights arent turning on. going to get the fluid today but need this fixed asap, please help =(

    Bookmark   June 9, 2014 at 2:21PM
Thank you for reporting this comment. Undo
justalurker

jnd425prblm,

Your question will get more attention when you start a new thread instead of hijacking a 4 year old one.

    Bookmark   June 9, 2014 at 2:40PM
Thank you for reporting this comment. Undo
jnd425prblm

sorry im new haha thanks for the advice, ill get to it

    Bookmark   June 9, 2014 at 4:26PM
Sign Up to comment
More Discussions
PTO problem.
I have a John Deere 190C with 54 in. cut i am having...
jeeper55
Time for a new tractor
According to the shop my JD L110's transaxle is on...
Key Design
Tractor starter-wrong rotation.
As I have been known locally as a lawn tractor fixer,...
rustyj14
Which model Deere for my yard?
My yard is one giant hill. 1.2 acres. I have about...
joe_ga
Hydrostatic Drive Problems??
Craftsman 20.5 HP Kohler Command V twin Under the seat...
jthievin
Sponsored Products
Majestic Deer Head - Small
Grandin Road
Oh, Deer Bottle Holder
$74.99 | Dot & Bo
Cielos Bath Rug 24" x 36" - LINEN
$54.90 | Horchow
Rustic Antler Replica Deer Antler Pendant
$378.10 | Bellacor
Casa Marseille 23 3/4" High Bronze Hanging Light
Lamps Plus
Area Rug: John Brown 10' x 14'
Home Depot
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™