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Deere GT235E. PTO Clutch flew apart. Replaced with New. PTO clutch will not engage. checked switch and Clutch. Cannot get voltage at plug from PTO switch and PTO clutch. Can Switch still be bad?

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Posted on Jan 02, 2017

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SOURCE: mower blades will not turn on with pto switch engaged on john deere stx 46

first look for a blown fuse the old clutch may have burn it out the check to see if a safety switch burned out

Posted on Apr 02, 2012

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SOURCE: I have a John Deere 757 Zero Turn and the Clutch won't engage to engage blades. I pull the switch and nothing happens. have checked safety checks

check the wires just as they go into the clutch i have had them break there and have been able to repair the wire

Posted on Aug 10, 2012

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SOURCE: I have a Toro LX 500 Lawn tractor the pto clutch will not engage, I have 13 volt at the plug for the clutch , so ordered and installed new clutch... Still will not engage checked volts again had 9.3

Load test the PTO circuit as it may a connection that allows you to a voltage reading when unload and then once loaded drops out.

By load testing I mean leave the PTO clutch coil attached and test while it should be engaged.

Posted on Apr 22, 2015

jimflower89712
  • 883 Answers

SOURCE: Troubleshooting why I dont have power to PTO clutch on John Deere L120. K1 RIO latch Relay is humming, buzzing? Whats going on?

check the clutch. sounds like it is out.

Posted on Sep 09, 2016

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John Deere x320 PTO switch not getting power. Mower blades will not engage. Replaced PTO clutch and PTO switch. Have checked seat safety switch and RIO switch as well.


Just out of curiosity check your pigtail that plugs into the pot harness. I have ran into a broken wire inside that pigtail before.

Nov 26, 2016 | John Deere Garden

3 Answers

F525. Updated mower switch by John Deere is not engaging mower


The John Deere F525, a front cutting machine, has 3 fuses.
20 Amp
15 Amp
10 Amp

Check the 15 amp fuse. I believe this supports the PTO clutch. If you replace the fuse and it blows again, check the electric clutch. You will likely find burnt or melted wires. The bearings do go out on these clutches causing them to run hot and eventually burn up.

PTO Clutch will not engage: There is a very fine one page discussion on evaluating electric clutches at this site:

http://www.messicks.com/Articles/FixingElectricClutch.aspx

My JD tech manual, which covers the entire LA 100 series, agrees with the electrical specifications. It states that the Electric PTO Clutch should show the following:

Resistance 3.7 ohms
Current Draw 3.25 amps
It does not give the air gap.

It does include a note to check the PTO Clutch Key for damage or if missing. So there is a drive key between the PTO Clutch and the shaft. Additionally, it recommends checking the tightness of the cap screw. That's the screw or bolt that holds the clutch on the shaft.
Cap Screw torque 55 lb-ft (75 N.m).

If the fuse blows, I recommend you check the resistance of the clutch. If the clutch is shorting to ground it will show zero resistance when you ohms the connector wire to a ground position. In which case, you will have to replace the clutch.

Fixing Electric Clutches

Other possibilities.
On the F525 there is a cut-off switch in the hydraulic system. It is a low pressure cut off. If you were running the mower and deck and then it suddenly stopped, it may be low pressure in the hydraulics. It will not automatically reset as you are using the same volume for the drive pumps. Once the oil gets low enough it cuts out the deck drive 1st, then the drive pumps.

Apr 16, 2015 | John Deere Garden

1 Answer

F620 john deere new clutch will not engage? could you tell me how many fuses and where thy are?


CHECK TO SEE IF YOU HAVE VOLTAGE AT PTO IF DO YOU HAVE BAD NEW CLUTCH AND THEY MAKE BAD ONES IF NO POWER AT CLUTCH THEN GO TO SWITCH CHECK FOR POWER AT SWITCH IF NO POWER CHECK FUSE BEHIND DASH THING ONE COULD HAVE RELAY ON IT SO CHECK FOR RELAY SMALL BOX WIYH FOUR WIRE IN IT CHECK IT FOR POWER ACROSS RELAY IF NOT REPLACE IF YES REPLACE PTO SWITCH

Sep 01, 2014 | Garden

1 Answer

On john deere la150, if i sit on seat and engage blades,,,nothing, but when i lift of seat, blades engage and motor shuts off. Replaced seat switch and did not fix problem


"On john deere la150, if i sit on seat and engage blades,,,nothing, but when i lift of seat, blades engage and motor shuts off. Replaced seat switch and did not fix problem" Okay, what I'm hearing is that "nothing" means the blades-driving PTO won't engage (declutch) when you switch on mower; but then, (say) as you start to dismount the mower (seat) the mower (drive clutch) engages even as the deadman switch (seat switch) kills the engine (and the drive/pto shaft starts to slow down. The key here seems to be that at full engine torque the clutch is unable to remain engaged but, rather, slips so that mower blade inertia (resistence) cannot be overcome...but as engine/pto rotation slows the clutch is able not to slip. First place to consider is the clutch gap which is probably to0 large (possibly from wear and tear, possibly not). So check specs and how-to from manual or factory and reset the pto drive clutch gap...not hard to do. If clutch gap is not the problem then most likely rehab or replacement of the clutch assy will be needed...is the mower has many years use sufficient to wear out the clutch. Another possiblity is an electic (wring/switching/grounding) problem involving mower and deadman switches.

Aug 19, 2014 | Garden

1 Answer

Pto not engaging in john deere lx 167


Check the voltage on the wire(s) connector to the PTO switch. Sometime portion of the switch can go bad. If you have voltage coming in to the switch check the output voltage going to the clutch..

Apr 03, 2012 | Garden

1 Answer

Mower blades will not turn on with pto switch engaged on john deere stx 46


first look for a blown fuse the old clutch may have burn it out the check to see if a safety switch burned out

Apr 01, 2012 | Garden

1 Answer

On John Deere lawn tractor when we pull the yellow button up to engage the blades to start spinning, they dont move.


If you have an electric pto switch, the switch, connecting wire from the switch to the pto clutch, or the clutch itself could be defective. You can check the switch and wire with an ohm meter. You can also check for proper voltage at the pto clutch plug.

Sep 20, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

MOWER blades WILL NOT SHUTOFF


sounds like a electro clutch engage type system

maybe your electro-clutch engage switch is faulty or a wire is connected the wrong way

was the clutch replaced recenlty and was is compatiable ?

or maybe you have a faulty clutch to test try

remove plug lead from plug

disconnect wires @pto clutch and apply 12 volt directly to clutch then remove voltage - if clutch engages then disengages the clutch is good it should click on then off if it does then its a switch fault
replace pto switch

cheers paul

hope its helps

Aug 08, 2010 | Oregon Scientific Electric PTO Clutch for...

2 Answers

John deere 997 z trak pto not working,changed pto switch not help


You may have a defective park brake switch or the pto clutch could need to be adjusted.Does the machine **** down when you try to engage the pto?If so also check the seat switch.To adjust the pto clutch you need a 9/16' wrench and tur all three lock nuts on the clutch a half turn at a time a retry the clutch,keep going until it will stay engaged.

Nov 08, 2009 | Garden

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