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JD Model 725F Front Deck Mower - Loss of power when PTO (Mower) is engaged. Any suggestions?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

lester482529
  • 226 Answers

SOURCE: Knocking in mower deck or belt clutch when engaging blades, motor bogs / slows down

YOU MAY HAVE A BENT BLADE OR EXESSEIVE BUILD UP UNDER THE DECK

Posted on Jun 01, 2009

  • 95 Answers

SOURCE: Husqvarna Mdl YTH2448 Riding Mower - Electric PTO Not Working

It sounds like your charge system is not working. If you jump the battery the engine will run with a weak battery but the pto clutch needs a strong battery to stay engaged.Try this to test it,after you jump it leav the jumper cables hooked up and try to engage the blade clutch,if it runs it is either a battery that wont take a charge or a charge system not working. If you put a volt meter on the battery while the engine is running and the voltage is 13 volts the charge system is working and the battery is bad.

Posted on Jul 31, 2009

  • 1111 Answers

SOURCE: G-110 deck belt keeps jumping off pulleys

check for a broken belt tension er or maybe grass clippings under belt area, check for a broken or loose pulley bearing, even a bent shaft on the deck.

Posted on Aug 07, 2009

wireguy212
  • 1627 Answers

SOURCE: JD 6400 tractor, PTO light flashes when engaged

The most likely problem is the pto solenoid valve on the rear of the tractor.It could be the speed sensor but you won't know until you get the codes read by the dealer.I have had to replace the b.c.u. for this problem but it is not common.

Posted on Oct 20, 2009

  • 9 Answers

SOURCE: i have a bolens 38 inch riding mower. it cranked

did you try depressing the clutch to disengage everything regardless of being in neutral? and it sounds like a pulley bearing went bad.try to spin the pulley with your hand and see if it moves.take the belt off to the mower deck and that should keep them from turning when you go to start it.

Posted on Feb 21, 2010

Testimonial: "thanks. at least i can crank it and get it to a trailer instead of pushing it. i really appreciate it.......cb"

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1 Answer

JD 1026R tractor. Why the PTO does not work?


many of this type machine will not engage the PTO if the battery is not full charged or bad

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Why can't I engage the mower deck?


Riding Mower Electric PTO Clutch Won't Engage When Hot ...

? 7:16
www.youtube.com/watch?v=wH9tZl6GzE0
May 2, 2014 - Uploaded by Steve O The PTO is relatively easy to change assuming that you can get the bolt out of the crankshaft. Basically follow ...

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X520 jd mower trouble


Sounds like a problem with the governor. Start it up. Don't engage the blades. Drive to a hill. Idle all the way down. Try driving up the hill. The motor should pick up when it slows while pulling up the hill. If it doesn't, the governor isn't working right.

Jul 16, 2013 | Garden

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My dad is trying to fix a lawn mower for a friend. It is a John Deere LX172. Whenever the mower deck is engaged or the unit is put into gear, the engine dies as if the ignition were shut off. I think...


Check the seat switch. That will cause your problem. It happened to me when I was not sitting on seat and turned deck on. Mine is a LX172 also.

Aug 12, 2011 | Garden

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I have a john deere 737 ztrak with a 23hp kawasaki engine. It cranks fine and runs strong. However, when the pto is engaged and begin mowing, the engine stalls. Also, the battery charge light comes on...


First. My disclaimer. I do not have first hand experience with your model mower.

Well, it sounds like when you engage the PTO the power to the PTO shorts to ground causing a) your charge light to come on as the voltage drops substantially and b) your mower to stall as the minimum voltage of the ingnition system is reached (or some other effect is at work). The clutch is might be internally shorted, or you may have a frayed wire in the PTO circuit. You may or may not have a PTO relay. If you do, it is sure to burn up if you continue using your mower. If you do not have a relay, you will definitely burn out the PTO switch. It is odd you are not blowing an inline fuse if this is the correct answer. Check your PTO circuit with a continuity tester to tell you if there is a short (or measure resistance directly with a voltmeter on ohms).

Aug 09, 2011 | John Deere 23HP VTwin Dual Hydrostatic 54"...

2 Answers

JD Model LX178, 1996 Model year. Engine runs but mower deck will not engage? (worked ok yesterday)


It could be a few things:

1. Check the belt that drives the blades; it could be broken or slipping.
2. Make sure the PTO Switch/Lever is working properly. The cable could be broken, or the spring that sometimes help to engage the blade could be broken.
3. There may also be a large stick lodged in the belt that drives the blades.

Good Luck!

Jim

Jul 29, 2011 | John Deere 420,1020,2010,2020,2510,2520...

1 Answer

I need a belt diagram for a ranch king king plus also i need to know the size for the main drive belt


Ranch King is a brand name of the manufacturer MTD.

Product manuals with part blow-up diagrams are available from MTD's web site,
http://www.mtdproducts.com/
Models are identified from the model number printed on a label under the mower seat.
The PTO and deck drive belts are shown on one diagram and the transmission drive belt is shown on another. The Form number on my printed Operator's Manual is 770-10526A (22HP, 46in cut) for Hydrostatic 817/818 models.

Parts can be ordered directly from MTD or other distributors on the web.

It is my experience that original brand name MTD belts work best.

The 22HP, 46" mower deck Ranch King Pro has 3 belts:

The drive belt which runs from the engine pulley back to the hydro drive unit to provide over-the-ground propulsion is part #754-0349.

A mower has either an electric PTO or a manual PTO, not both.

The electric PTO belt the provides power to the blade deck (runs around the electric clutch on the engine shaft (activated by electric switch, not the mechanical hand lever that engages the mower deck) is p/n 754-0476 for the 46" deck.

The manual PTO belt the provides power to the blade deck (runs off the pulley on the engine shaft (activated the mechanical hand lever to the left of the steering wheel that engages the mower deck) is p/n 754-0228 for the 46" deck.

The deck belt that goes around the 3 blade spindle assemblies on the mower deck, to drive the grass cutting blades is p/n 754-0349

In my experience, the PTO belt lasts about half a season, the other belts break about every other season when mowing 4 acres weekly.

Sep 07, 2009 | Mtd Garden

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