Question about John Deere Pto Clutch For Stx38 And Stx46 Lawn Mowers

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Pto adjustment how to adjust

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SOURCE: My Johndeere 2510 pto will engage. But you have to

its actually the clutch not disengaging enough for pto to engage or the teath are worn down on pto shaft

Posted on Jun 05, 2009


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Any adjustment for hino dutro tipper pto.

When engaging the pto it is important that you have the clutch disengaged so that the pto gear is not spinning in the box.before it engages.
The pto gear runs off the counter shaft of the gear box and is spinning all the time the engine is running
when engaging the pto ,you are physically engaging a gear ( like selecting 1st gear) so you have to stop the counter shaft spinning so that the pto gear will engage with slashing

Jun 14, 2015 | Garden

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need throttle adjustment govenor adjustment possiblt new pto clutch you have to take in to shop adjustmets 50.00 pto clutch 200.00

Sep 03, 2014 | Garden

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Pto will not dis-engage causing engine to not start

if it has belts it could be adjusted to tight

Aug 13, 2014 | Garden

1 Answer


On the front of the clutch, you should see 3 or 4 bolts with springs under them, they are the adjustment screws. Insert a .018" feeler gage between the clutch's plates and tighten the screws. You will have to go around to each screw several times as adjusting one effects the setting at the others.

Jul 27, 2013 | John Deere Pto Clutch For Stx38 And Stx46...

1 Answer

I have af935 the power takeoff will not turn on at times other times it kick back out would like to know how to adjust it.

Hi and welcome to FixYa, I am Kelly.

All of the PTO functions are controlled by a combination of safety switches.
1. Clutch Brake Pedal switch
2. Seat occupant switch
3. PTO engaged Switch

(Noted this is a 3 cylinder diesel)

Any one of the three can cause the problem your having.
- One of the main reasons this happens is that the clutch often is not properly adjusted. The clutch must be fully to the UP position. You have to crank the engine without starting it to test this. I use a large screwdriver across the starter solenoid terminals so it does not start. If the clutch brake pedal moves more to the up position when cranking the engine then the clutch is not properly adjusted. The clutch must be adjusted so that the clutch pedal is all the way to the top. I.e the variable speed pulley is fully open. After clutch adjustment test the moder deck / PTO.
- Second reason they kick out is that the occupant safety switch (seat switch) is out of adjustment. Stupid things like a small bump cause the deck to shut down if the seat switch is not right. All you do is adjust it so that it is closer to the seat sensing position... One turn of the locking nuts (lower and upper) clockwise will make a world of difference.
As far as the PTO itself there must be at least a 0.020 gap when it is disengaged. If it is larger than that then the gap needs to be adjusted. The PTO clutch on these needs adjusted at regular intervals. I recommend checking the gap every 100 hours. The PTO clutch is probably out of adjustment there are bolts on the PTO clutch that have springs on them if the springs break it goes out of adjustment just replace the springs and tighten everything up. The other thing to look at would be the engaging lever itself.

One more thing is this PTO clutch has a fuse. I can't remember now where the fuse is but I am certain there is a fuse. Find the fuse and make sure that there are not any problems with the fuse holder. (hot, loose, corroded etc.)

Thanks for choosing FixYa,

May 10, 2011 | John Deere Garden

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

1 Answer

PTO CONTROLS. How do you engage and disengage PTO.

The tractor is not a 6300 is it.If it' not you need to adjust the cable for the p.t.o. until it will stay down.Don't turn the turnbuckle too much at a time because there is a fine line between the won't engage and the won,t disengage adjustment.

Sep 06, 2009 | John Deere 6300,6300l,6400,6400l Tractor...

2 Answers

Blades won't engage when the engage knob is pulled

there is no adjustment drop deck all the way down spray all moving parts with wd40 mash clutch all the way down release quickly several times crank and try

Sep 01, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

I have a Countax K14 ride on mower the cutter deck

Hello ianh_2007:

Usually this Problem is Caused by a Blown Fuse or a Bad PTO Ground.
1-The Following is a Basic File I Made for Checking the PTO (Blade Engagement).
>>The Most Common Cause for this Problem is the PTO Ground. >>A Quick Ground Check is to Use Another Wire and Ground the PTO at the Harness Connection Nearest the PTO.
>>Be Careful and Do Not Ground the HOT Wire. Use a Multimeter and Locate the Ground Wire.
>>Clean the PTO Ground and All the Connections for the PTO Wiring Harness.
>>If you have an Ohmmeter, Disconnect the Wiring Harness from the Front of the Clutch and Check the Resistance of the Clutch. You should have around 4 or 5 OHMs. If at or near Zero, the Coil has Shorted.
2- >>The Following is a Basic File I made for Setting the PTO Clearance. Any Input is Appreciated. **Some of the Newer PTOs cannot be Adjusted.
>>If you can Get a Blade Style Feeler Gauge between the PTO Magnet and Clutch, then Set the Clearance at .015in. The Newer PTOs have the Same Set Up as the Older PTOs, except there is No Adjustments.
>>I Suggest also that you Rig a 12 Volt Light for Testing the Current Flow to the PTO while Operating the Mower. If the Light Blinks During Operation, then you have a Bad Connection somewhere to the PTO Clutch.
>>If the Light Stays Steady and the PTO Still Kicks in and Out, then it is the Adjustment.
>>You can Also Try Turning the Spring Loaded Adjuster Nuts 1/4 Turn and Operate the Mower. Do Not Adjust Over 1/2 Turn.
>>If you have Adjusted to 1/2 Turn and the Problem is Still Present and you Know the Voltage to the PTO is Steady, then Replace the PTO.**
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck


jbridger (John)

May 12, 2009 | Garden

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