Mower PTO switch hot/failing-troubleshoot clutch circuit
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- Опубликовано: 24 июл 2024
- Do your mower blades fail to engage when you pull the PTO switch up? If so, check this video out, I will try and help.
I have found a NEW voltmeter(not the Fluke in the video) that is really handy and I highly recommend it; it's a DVOM with an integrated DC amp clamp. I use the meter for automotive use too - great for diagnosing starter and charging systems!
EXTECH MA445 AMP Clamp
www.amazon.com/gp/product/B01...
Also, buy these test leads(you can thank me later)
www.amazon.com/Fluke-TLK282-S... 
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Watched several videos addressing this problem with my Cub zero turn, this was the only one that helped. Great video!
I've been trouble shooting a gifted JD z425 that sat for two years. Not trying to spend money I don't have too. Ohm'd out the clutch at 1.4 after popping a 20amp. Looks like the previous owner did the same thing as the wiring diagram shows it as a 5 amp fuse. Looks like I'm ordering a new clutch. Thank you so much.
Thank you!!! i have watched about 10 other videos trying to find this information and you are the Only one that explains how to check to see if the clutch is Bad.
People like you make my day. Great information presented in a way that is easy to follow and well-explained. Add the level of detail and clear camera angles and you have one awesome video. Thanks for sharing your expertise.
Hey! Just repaired my MTD Yardman mower using your air gap information. I adjusted the gap and the clutch began engaging again. Probably saved myself several hundred dollars!
I bought a 2008 RZT 50 for $250 (in 2020)because the guy replace the pto and still didn't fix it. After finding a schematic, I trace it down to both reverse switch were bad. Only took a half hour to find it. Just jumping both was all I had to do. Actually all I had to do was to jump one of them to get it to work. The diagram show that if both handle are pulled back it means you are in reverse. Home owners version of mowers need to shut off the blade in reverse. Now I think I need to rebuild both Trans. Keep those videos coming.
My friend ,this video just earned a new subscriber, you're troubleshooting techniques are top notch!
Gave you a sub for this one. Had a pto switch and reverse safety switch go out at the same time. Was able to identify the problem once I knew what the pto clutch should ohm out to. Thanks for the info.
Excellent presentation! 18 amps is a big draw, no wonder your test jumper got hot!
Dude: you ROK! Simple, yet step-for-step logical details. Thanks so much. Liked and subscribed.
Vary good vid. . I work on mowers as well and good at . I been doing it for the past 18 years . I came across a real problem about a iffy PTO . It test good then after few engagements and blew 2 switches I think you solved the problem . Bad PTO . I suspected this all along but not for sure . The problem and what made it difficult is that one day the pto work fine the it would blow a switch then a new switch blow in less than a minute . The customer had told me . All I have to say thanks for the great advice .
This video told me everything I needed to know and what to check and how to check them. All in short order! NO annoying background music,either! THANK YOU,Hillbilly!
Solid presentation. Thank you. Very detailed but straightforward.
Great video! Same thing is happing with switches to my Gravely 260 and this explains why.
Very informative, ty! Great job on the camera work and going through the diagnostic part.
Thanks for the great video with all the information that I needed to troubleshoot my i1042 Cub Cadet. have a wonderful day.
Thanks for the tutorial. Just got a lot of insite to a very similar situation with a JD Z915E. Cudos!
Love that amp clamp that fits around smaller wires.
Very well presented and explained; THANKS!
Thank You !!! Although I have a Husqvarna , trouble shooting it as you presented it I found my problem to be the relay.
My husky zero turn mz52 le has everything replaced and still stalls when you engage the mower. Can't find a relay in manual?
Great video! Thanks for posting.
Good job bud.that is as simple as it gets.
Thank you you helped me solve my issue.
Thank You. Helped me out alot!
Great video and well explained!
Awesome video! Thank you for sharing.
This saved my life! Easy peazy
Using 30 amp fuses on a 7 amp circuit. The fertilizer goes on the lawn, not in your head!
very helpful, thanks
Thank you! VERY HELPFUL!!
Hey Hillbilly Rig, just came across this video looking for a resolution to my PTO issue. I have a 2014 Cub Cadet RZT 50 i bought off another user. A month after buying it, started having PTO issues. When you are mowing, while the blades are engaged and you put in reverse (PTO automatically cuts off in reverse for these), after going out of reverse, the blades will not engage. You would have to tap on the deck to get the blades to re-engage while riding. (This didn't happen everytime for putting in reverse but every so often). Now, about 2 weeks ago, while mowing, the blades just disengaged and wouldn't come back on for anything. Got a multimeter and tested for continuity and didn't have any in the switch. I replaced the switch and all seemed good. However, after about 10 to 15 mins of mowing, the blades would not engage again after putting in reverse. Ordered a new PTO clutch online, replaced yesterday and it seemed to be running like new. It even felt smoother after engaged the PTO button. However, after we were mowing for about 45 mins, it did the same thing again where the blades wouldn't reengage after putting in reverse. Turned it back on this morning and they engaged, but it seems to do this when the mower is running for a while. We have a new switch and a new PTO clutch. Any other ideas what the issue may be?
Find the reverse safety switch’s-they may be out of adjustment, need cleaned or have a wiring issue. The switch will either be normally open or normally closed. I would guess they are disrupting power to the PTO. Just follow the wires 👍
I have a question. I'm getting power through the PTO switch down to the PTO but it won't activate the PTO unless I ground the other terminal. It's a Cub Cadet 50-inch cut. Any ideas?
Awesome vid great help
Great Video!
Nice video. Thanks.
Hey Billy, my grasshopper has charged battery. but when I turn on the switch to crank the machine no light comes on PTO switch seems to be working. What should I check? It was working fine the other day. All connections seem solid
Thanks in advance for any advice
Sounds simple enough. My problem is.After running my lawn tractor for a while. If I disengage the clutch and try to reengage it. It doesn't want to engage.The gauge on my mower shows a higher discharge. Than it does when cold. What's my problem? What should I test first?
We changed out our pto because the blades would not engage but it keeps blowing the fuse as soon as the pto is engaged any suggestions
Proper troubleshooting and diagnostics vs. parts changer. Sometimes you get lucky changing parts, but no way to do it right.
I have 2008 42 in troy bily zero turn rtz and if I disengage my pto and try to re engage it won't engage right away some times it takes a minute or two minutes for the blades to begin spinning but once it engages it stays on.
Can you hear the Clutch engaging(“clicking”) on and off each time you pull the PTO switch up? If I’m forced to guess.. sounds like the “air gap” between clutch discs could need adjusting; 3 nuts on bottom of clutch-mark each with a pen and turn clockwise 1/4 turn at a time. Need to tighten evenly. Check and repeat. I would really recommend a feeler gauge. Good luck!
This guy could just be my favorite Hillbilly!
Got a zero turn in the shop doing the same thing. Customer said the blades came on for a few seconds then shut off. He replaced fuse. Blew the fuse again. He put in a bigger fuse. It burned out the PTO switch. That’s when he brought it to me. First thing I did was check resistance through the clutch. It was at 0.5 ohms. Boom, done, internal short inside the clutch. Replaced clutch. Problem solved.
Ehhh, any hints or ideas on what causes the mower to completely die as soon as the PTO is engaged? It in fact does engage the blades, but only for a split second before the whole tractor dies..
Been doing small engine work for over 25 yrs I've had occasions when the pto Omed fine but the clutch was still the issue ...keep in mind this was rare but has happened
I checked the resistance for all the youtubers; just another diagnostic approach. If a clutch is pulling 17amps, it’s getting a new clutch and new switch. Thanks for the comment.
@@hillbillyrigrepairs1814 my deck runs, switch works as it should, but when mowing I get an intermittent drop out where the deck is still running and engaged but if I try to move the engine bogs down. Would this be a clutch issue?
Sounds like an engine issue. You could zip the blades off and drive up some step grades-if it bogs then you may have an engine or hydro transmission issue. If it bogs, perform basic tune up stuff first(suck, squeeze, bang, blow)
Have a 2006 M60 Tank. Had a new clutch from dealer put on probably 4 years ago, about 300 hours. Recently, after mowing for a while, if I turn off the PTO, I can't get it to come back on. One sneaky way to get it to come back on, is after I pull it back on and nothing happens, if I push the rpm level all the way to low, then push it back up to high (full throttle) the pto will come back on every time. This only happens after mowing for a while, with this intermittant PTO.
What should I check? Saw you posted a reply that said this, would this apply to my 2006 M60 tank?
(Can you hear the Clutch engaging(“clicking”) on and off each time you pull the PTO switch up? If I’m forced to guess.. sounds like the “air gap” between clutch discs could need adjusting; 3 nuts on bottom of clutch-mark each with a pen and turn clockwise 1/4 turn at a time. Need to tighten evenly. Check and repeat. I would really recommend a feeler gauge. Good luck!)
burtmanindustries
Perform a quick voltage drop test on the clutch circuit also verify clutch has a good ground. Be sure to SAFELY test circuit while the mower is acting up. Then look at the clutch-if it’s black and has three bolts holding it together, it’s likely an adjustable clutch. If this is the case go to Ogura website and lookup clutch air gap specifications. Check gap with feeler gauge.
**Harbor Freight sells a strong 1/2 electric impact wrench; if you’re looking to replace clutch yourself. Any excuse to buy a new tool ;)
working on a Simplicity ZT3000B2450 with a Briggs engine, i had bought this mower, rebuilt the LH trans, started it and everything was fine until i engaged the blades, had a strong draw down in power, shutter and then it shut off, plenty of compression, fire to plugs and fuel, problem i have now is that i have NO power to PTO switch or hour meter, and when i turn switch to start, nothing...all 5 safety switches check, i have taken off the whole wire harness thinking i might have a bad wire, but it occurred to me after watching this video that i haven't checked the clutch to see if it shorted the switch because it is bad... Could this be the case, can a bad clutch fry the engage switch and cause it to act like the safety switch is bad???? thx tony
My switch breaks in half. The yellow knob detaches itself from the black part with the prongs. Runs for awhile then self destructs. New switch, same crap. Help
Hope someone still watching comments.
My 60 in zero exmark stays engaged. Changed the switch and it still does same thing.
Does anyone know what the issue might be
My switch when you pull PTO up to engage, nothing happens, but if I get off my seat, and attempt to engage PTO is cuts motor off. Does this mean PTO switch is working and clutch is bad, or what does this mean? The mower sat all winter and was working when stored. First time attempt to use and no go. Thanks for any tips.
LoL; that is a seat safety switch. It's suppose to cut off when your not on the seat. Has nothing to do with pto
Where are you located? Nice O’s hat. Local to Bmore?
Hello I have husqvarna I have new pto clutch and switch still blades want engage my pto clutch unplugged reads 4.2 OEM's I can run jump from battery it will engage in clicks
My PTO clutch runs 3.4 ohms and my toggle switch run 0.0 and all of them from across the cross and then if I pulled a blades up is still the middles it's all good so what else I need test
What if you get 0.00 for ohms on clutch?
Been trouble shooting my wright stander, switch seems fine but when I pull the switch to,engage the pto, you just hear a click from the,clutch......so,bad clutch circuit?
I need help! I start my mower pull the pto switch. I can hear the clutch make a clicking sound but the blades do not come on
It must have been just the switch. Easy fix
What if the clutch ohms out fine?
I got an LX178 JD. My problem is, when it starts warming up, the clutch stops. I have to keep popping the switch up and down. Once I step on the go pedal, it stops. I'll do it a few times then finally I can finish mowing. I wasn't sure if it's the switch or the clutch. Advice please.
I would say-gain access to the switch and have a test light ready. When the clutch won’t engage after you pull the PTO switch up, clamp one end of test light to a ground(or battery ground) the other to the wire coming out of PTO switch connector that leads to the clutch. The test light should light each time you pull the PTO switch.
Hillbilly Rig Repairs thank you. I'll try that
Good pto will have 2 to 4 ohms to be good just helping my buddy out
I have the opposite problem with a Grasshopper 618.... the blades and pto will not DISengage.
@Zeus 1 no.... it was my Dad's mower, he just parked it and bought a new one. You know how stubborn old men are. I was convinced that it was the switch, he wouldnt let me work on it. BUT from everything that I read on various forums the problem is the switch.
@Zeus 1 to be clear.... the engage/disengage pull switch for the blade.... that is the only thing that makes sense, if it is bad it will make the blades try to spin upon starting. There is also a clutch on the engine somewhere that could cause it.... but like I said, i never got a chance to fix it.
I just came across a Great Dane zero turn mower. My friend stated that they don't make these mowers any longer. Can any parts be purchased for these tractors. Has a 25 HP Kohler. I also couldn't locate any numbers on the engine???
The model, serial and spec. number should be on a silver sticker located on plastic blower housing of engine. If that’s missing. Try and contact Great Dane(or the company that bought them) with the model and serial number of mower.
Lastly, take the mower up to a dealership that carry kohlers.
Try calling Kohler too.
I don’t believe these engines are stamped-maybe under the crank pulley 🤔
@@hillbillyrigrepairs1814 I was afraid that you were going to say that the numbers were on the decal. That decal is pretty washed away. Someone messed with the wiring and safeties for the PTO so no shop will work on for safety reasons, so i am attempting to work this thing if I can find a manual with part numbers.
My 36 INCH Ferris Walk behind rowed down a small hill. Yes rowed... Now when I engage the BLADES, THEY TURN ON BUT when I turn up the power and start riding over 3miles per hour, they disengage and shut of??? HELP ME... THANKS
BrezzEasyy I would start with a wiring diagram.
The clutch for the mower blades needs both power and ground to function.
I would buy 2 piercing probes(1 for each wire) then connect jumper leads to each probe.
Connect a test light in series with the jumpers.
To check the clutch ground, connect test light to power. To test the power feed connect the test light to ground(negative battery terminal etc)
Have the test light where you can see it(on your lap) and when you go over 3 miles an hour or whatever and the blades kick off, that test light will go out.
If you’re losing the ground side of the circuit-hunt that done. Power side-same thing. Be safe. Make your own test leads with alligator clips and wire if you want.
My old cub cadet 1525, the switch is pushed in and the blades turn. Pull switch out mower dies and wont start with switch out? Check clutch wires?
I’d say disconnect connector to clutch(2wire connector near clutch)-then start the mower. If the blades are spinning with the clutch disconnected I would suspect mechanical fault with clutch.
Second issue is likely in your safety switches and/or wiring causing your ignition coil or coils to ground out-shutting off the mower.
@@hillbillyrigrepairs1814 So what do you do if safety switches are grounding out and the blades are shutting off?
My 36 INCH Ferris Walk behind rowed down a small hill. Yes rowed... Now when I engage the BLADES, THEY TURN ON BUT when I turn up the power and start riding over 3miles per hour, they disengage and shut of??? HELP ME... THANKS
I have a 2009 Cub Cadet 48" ZTR that I thought had a switch problem. I installed it. it ran for over half an hr and when I went to turn the mower back on, the blades wouldn't engage again. Does this mean the mower blew the switch out and I have to buy another one? Does it also mean that my clutch may be causing the switch to blow.
I'm no mechanic but I get by with simple fixes, but I am not sure I can handle putting in a clutch if that is what it is. I also noticed, right before it totally wouldn't engage, that moving the left lap bar made the blades turn again, but that only lasted a few seconds.
Greg Taylor Yes. A partially shorted clutch can keep blowing out switches. The likely culprit is the clutch.
If you have a hand, air or 1/2 cordless impact taking the clutch off isn’t bad. Just need to remove deck belt, the clutch brake assembly, electrical connector and finally the bolt that goes through the clutch and threads into the crankshaft. You may have to get creative getting the clutch off the crankshaft; they like to get stuck.
@@hillbillyrigrepairs1814 Thank you for the response and I do have air tools to work with. It's easier and more cost effective if I can do it, along with the learning experience. Thanks again.
awesome video brother new subber
Would that be on any.mower? I have a bad boy
Sir. I have a john deere gt 275.ride mower/ the clutch has power from battery./but no power going from the switch to the clutch???/if help me ??
Thanks sir
Is your clutch no engaging? When was the last time the mower worked?
top-drawer👌
Thanks,. Has anyone repaired the clutches or are they worn out when they draw too much?
I’ve never had anyone ask for a remanufactured clutch; doesn’t mean they aren’t out there for a mower. If I diagnose a faulty clutch I want to speak to the least amount of “parts people” as I can. Meaning, I go online and buy new clutch. Zero hassle
Thanks, I was wondering whether people fix these clutches. @@hillbillyrigrepairs1814
Hey Boss, got a question - not sure if you are familiar with Toros or not - I got a Z500 Z Master 2012 toro - And the engine runs smooth , but whenever i try to activate the PTO switch - blades will not run and my engine shutdowns. Is this a result of a bad PTO Clutch?
It sounds like the kill relay is being switched and grounding out your ignition coils. You could remove the engine cover(it’s not too bad) to gain access to both ignition coils-there should be a single white wire to each module-disconnect both those white wires. See if that fixes the issue. If it does, something is tripping that kill switch(an improperly adjusted safety switch, neutral safety switch, delay module,etc)
Before you start, think about how you’re going to shut the mower off. There’s likely an inline fuel shutoff valve, turn that and wait for it to shut off, or pinch the fuel line with vice grips..umm or ground out the coils, disconnect fuel solenoid connector on carburetor.
I hope you have a carburetor and not EFI.
I realize this is true hillbilly diagnostics-but it will get you down 1 of the 2 paths.
Outstanding reply- I actually did some ohm test on the PTO clutch it came out to be 2.2 and surprisingly once plugged everything back in - I started the lawn mower up and tried the PTO switch again- nothing happened the engine didn’t slow or shutoff- so maybe it is the PTO switch itself? I will buy one and get back with you
New PTO switch would be my choice if I were forced to guess. Make sure the PTO electrical contacts are clean and tight during install. Good luck
@@hillbillyrigrepairs1814hey I’m back, after three years same mower. Haha and by the way the PTO switch was the answer. I’m having issues off and on with the clutch not engaging, I have looked back and seen sparks coming out (from the clutch) when I try to engage and the blades do not engage. Is this a sign of a failing PTO clutch? It does still work, but some times I have to engage off and on for a little bit. I would say it’s about 15% of the time. Hope you are still on here and doing good!
Great Video. I have a Cub Cadet Model 183649 Zero turn 50" cut lawn mower. It was working fine till few weeks ago. The blade doesn't engage. When you have key in run position, you hear the clutch engage.Once you turn the mower on, blade will not turn. It is hard to get to wires. But we removed the side black plastic cover. With cover off, we turn the mower on and tried to engage blades. It worked fine. we tried few times and it worked every time. After putting the plastic cover on, blade won't turn. You do hear the clutch engaging when you have key in run position. Appears there must be a safety switch that may have loose connection... Any suggestions??
Use a test light to see if you’re losing power or ground at clutch connector.
You may have “accidentally” fixed the mower by messing with connectors. It may also have been a coincidence.
Clip test light to battery negative, turn to run, engage pto(hear it click). Shove test light into each side of clutch connector. When test light lights, that’s your power feed.
Then move test light clip to battery positive. When you touch the other wire(ground) it should light. Then attack whichever side of circuit is faulty.
Very Good!... #97 ✝ {5-13-2022}
is that a home made jumper wire
Yes.
Inline Fuse Holders & Fuses Kit - Muhize 16 Gauge Automotive ATC/ATO Standard Fuse Holder with 15 AMP Standard Blade Fuse (10 Pack) www.amazon.com/dp/B07XLZN1Y1/ref=cm_sw_r_cp_api_glt_fabc_JPJC36RJ7MNTJ6671WDP?_encoding=UTF8&psc=1
GLOSO E71 2.8 mm Automatic Circuit Breaker Mini ATM 10Amp Circuit Breakers Auto Reset (T1) - 1 Pack (10A) www.amazon.com/dp/B084BQHZFJ/ref=cm_sw_r_cp_api_glt_fabc_QD2DCSMY16PVF87438SM
Something like this..
If you said 1800 milli-amps it is 1.8 amps not 18 amps.
That is correct, however the inductive current clamp interprets 10mv/A. So .180mv = 18amps.
25 amp all day on the switch
"Allzwe"
Haha I had to watch the video again 🤣
Pto stays on zero turn club cadet
Hello boys and girls, how condescending.