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norman_armstrong5

PTO rotation what stops it?

3 years ago

I have a 917.273240 25hp Kohler.
I am replacing the PTO and I dont see anything to line up the PTO to keep it from spinning when engaged and tearing the wires out.
It has been working great but all of a sudden the PTO spun when engaged and broke the wires.
I looked at the parts diagram in the manual and didnt see anything.
Any suggestions?

Comments (7)

  • 3 years ago

    If this is an electric PTO clutch there should be a bar that keeps the outside of the clutch assembly from spinning Thus the inside of the clutch spins when electrically engaged and the pulley will spin on the bearings. The wire that engages the clutch runs along that bar.


    Hope you can repair the wires. And hopefully you won't have to take clutch out to do so

  • 3 years ago

    I need to know the part number of the bar because what ever was there is

  • 3 years ago

    I'm Assuming the 917 number is the model number of of a Sears tractor. The clutch wouldn't be a part of the engine. I thimpk! I googled: "917.273240 25hp Craftsman mower Parts manual" and got this{ Sears page.

    1. There's a whole bunch of different anti rotation bars and some other stuff. Some of the prices for the clutch are about 4 times what I paid for a new clutch last summer with the labor. BUT if you look at that page about half way down the page to the first bar is 3 links: Parts Models or DIY Content. If you click on Models it allows you to choose an online Parts Manual.

    2. The manual is at this page. Either put in the part name: "anti rotation bar" or click on Mower deck to view the deck parts. I didn't go this far.

    3. I've saved some of the pages for my machine on my computer for future reference. I didn't add in the numbers in this post???

  • 3 years ago

    917.273240 is the model number.

    I have the factory manual that lists all the parts for the mower including all engine parts. I have gone through the manual a number of times and I cant find anything that says "anti rotation "

    It shows the PTO and the part number. I was just wondering if someone ut there knowknows something

  • 3 years ago

    I came up with the same part number for Anti-Rotation Bracket. But I'm not sure and they don't take returns.


    Since you seem to indicate that your bracket was lost I'd assume you also need some kind of retainer to keep the bracket in the machine. But you can find cotter pins at a local hardware store.


    You can find some parts for mowers at third party sellers like Stens much cheaper.


    Good luck with the wire.

  • 3 years ago

    What does the anti rotation bracket look like?

  • 3 years ago


    Solved