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  1. #11

    Join Date
    Apr 2011
    Posts
    483
    Location
    Massachusetts
    Mower
    Husqvarna, Cub Cadet, MF, Craftsman

    Re: electric pto clutch.

    I noticed that no one has mentioned the bearings. I have had to replace the bearings in the PTO on my 96 Craftsman. The bearings get rusted from the moisture and tend to seize on the shaft. I wonder if the bearings are semi-seized on the shaft and release after a period of run time. The best thing to do is remove the PTO and check it out. This has been a problem on my tractor. The first PTO was completely distroyed. The second PTO is checked from time to time and I replace the bearings as necessary. I got a little extra use out of a set by drilling into the bearing seal (very small holes) two in all and forcing in grease with a needle grease fitting on the grease gun. You pump in one hole until the grease comes out the other.

    This may or may not be the problem, but it's worth a check.

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  3. #12

    Join Date
    Jun 2012
    Posts
    2
    Location
    Indiana
    Mower
    Honda

    Lightbulb Re: electric pto clutch.

    Quote Originally Posted by alvindale View Post
    My issue is what appears to be pto clutch failure, but only seems to happen when hot. Does that make any sense? Acts the same when direct wired to battery.
    Having a similar problem with an Exmark lazer z hp. Ran for 1--17 minutes, then the pto shuts down. Let cool---goes again until next time. Anybody have any ides?

  4. #13

    Join Date
    Jul 2012
    Posts
    5
    Location
    Texas
    Mower
    Craftsman

    Re: electric pto clutch.

    Quote Originally Posted by alvindale View Post
    My issue is what appears to be pto clutch failure, but only seems to happen when hot. Does that make any sense? Acts the same when direct wired to battery.
    It sounds like an intermittant short in the electric clutch. Is that is the case, get your checkbook out. I don't know what kind of electric clutch you have, but you can take an ohm meter and check the coil resistance. I am having clutch problems right now myself. My clutch reads .2 ohms, when it should be between 2.4 - 3.4 ohms. .2 ohms is almost a short and it will kill your engine.

  5. #14
    freetown fred's Avatar
    Join Date
    Apr 2012
    Posts
    2
    Location
    New York
    Mower
    Ford 8N w/ bush-hog

    Re: electric pto clutch.

    Quote Originally Posted by alvindale View Post
    Yes, that is correct.
    Thanx alvindale--sorry for time lapse --toggle switch works fine. NOW, if we ever get some rain, Had a real good first cut hay wise but 2nd, I got nothing to speak of. Good news--it's been raing steady all night

  6. #15

    Join Date
    Jun 2012
    Posts
    2
    Location
    Indiana
    Mower
    Honda

    Thumbs up Re: electric pto clutch.

    Quote Originally Posted by Eyeball View Post
    It sounds like an intermittant short in the electric clutch. Is that is the case, get your checkbook out. I don't know what kind of electric clutch you have, but you can take an ohm meter and check the coil resistance. I am having clutch problems right now myself. My clutch reads .2 ohms, when it should be between 2.4 - 3.4 ohms. .2 ohms is almost a short and it will kill your engine.
    I'm sure your problem is also the electric clutch. Seems to be a common problem in these "high end mowers." If you look, you can find a replacement for under $200. There is a lot of info out there. Good luck.

  7. #16

    Join Date
    Jan 2015
    Posts
    3
    Location
    Oklahoma
    Mower
    Cub Cadet

    Re: electric pto clutch.

    maybe a dumb question, but can an electric clutch fail in engaged position?

  8. #17

    2,500 Post Club

    Join Date
    Jul 2013
    Posts
    2,839
    Location
    Georgia
    Mower
    2010 simplicity broadmoor 46" deck 20hp vanguard

    Re: electric pto clutch.

    Answer to your question is yes.

    Fixing Electric Clutches Burnishing a new clutch per instructions is most important.

    https://www.google.com/webhp?sourcei...20pto%20clutch information

  9. #18

    Join Date
    Jan 2015
    Posts
    3
    Location
    Oklahoma
    Mower
    Cub Cadet

    Thumbs up Found problems,I hope.

    I found broken springs on pulley plate. Replaced it with one from an old clutch I had replaced 2 years ago. I also replaced the battery and checked and cleaned all electrical contacts I could think of. Reinstalled clutch and it started working. Don't know which was the true fix. Now I just need to let plates burnish in. I am glad I found the Forum, and I really appreciate the help. jsr

  10. #19

    1,000 Post Club

    Join Date
    Aug 2011
    Posts
    1,764
    Location
    Washington
    Mower
    Craftsman

    Re: electric pto clutch.

    Is there a current figure during lockup? How much does the ?magnetic clutch? draw when operating properly? Seems that would be a good running measure to have. Also we know e.g., motors which are receiving insufficient voltage can burn up so seems a PTO not receiving enough voltage could slip itself to death?? A person could use a VOM to check this?

  11. #20

    1,000 Post Club

    Join Date
    Nov 2014
    Posts
    1,279
    Location
    Australia
    Mower
    Victa slashers & Push , Rover Rancher II's, Cox ( several ) & White LT120 + GT 200

    Re: electric pto clutch.

    Quote Originally Posted by motoman View Post
    Is there a current figure during lockup? How much does the ?magnetic clutch? draw when operating properly? Seems that would be a good running measure to have. Also we know e.g., motors which are receiving insufficient voltage can burn up so seems a PTO not receiving enough voltage could slip itself to death?? A person could use a VOM to check this?
    Fairly easy to do.
    Hook up an ammeter on the + feed to the clutch.
    Clutches will pull 5 A to 15 A depending upon model when cold & go by anything as much as 20% when they get hot

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