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  1. #1
    New Member
    Join Date
    Mar 2013
    Posts
    5
    Location
    La Grande Oregon
    Tractor
    2003 Power Trac 425

    Default Replacing Kohler Command in PT 425

    Although I have been looking at this forum for the past 10 years I have not posted I live right down the road from the (carpenter) and that is why i purchased the Power Trac. I now am approaching a 1000 hours of use and abuse. Have moved tons of large rocks to form rock wall behind the house, mowed about 5 acres of the property and used the PT for all of the landscaping. I loaned it out several times and on one occasion it was run low on oil. I am now experiencing a lot of blow-by and if I work it hard it will go through oil in under an hour. Will probably replace with a Kohler. called PT and they suggested I purchase closer to home. The only thing I am not sure of is the shaft size 1 1/8 or 1 7/16. Engine model CH25S Spec. Number 68500 serial #3024103751. Tractor purchased for me but quickly became my wife's tractor. Appreciate any input. cherylspt

  2. #2
    Epic Contributor MossRoad's Avatar
    Join Date
    Aug 2001
    Posts
    23,481
    Location
    South Bend, Indiana (near)
    Tractor
    Power Trac PT425 2001 Model Year

    Default Re: Replacing Kohler Command in PT 425

    Welcome to TBN!

    You might want to give Jack's small engines a call. They are reportedly very helpful.
    MossRoad

    Click On My Little Tractor
    To See Pictures And Videos
    Of It In Action!!!


  3. #3
    Platinum Member tmarks11's Avatar
    Join Date
    May 2005
    Posts
    647
    Location
    Port Orchard, WA
    Tractor
    2005 Power Trac 422

    Default Re: Replacing Kohler Command in PT 425

    You might want to consider the Kohler 25HP EFI variant (ECV730). It looks like it is only $100-200 more then the Kohler 25.

    Pajoub replaced his Kohler 25, and he had the 1-7/8" shaft variant.

    http://www.tractorbynet.com/forums/p...ml#post1696791

    There have been some reports of 1-1/8" shaft, but I think those were newer PT422s with Robin engines.
    -----------------------------------------------------
    Now in Port Orchard, WA
    2005 PT-422
    4n1 bucket, minihoe, auger, 48" mower, land pride aerator, tow adaptor, forklift, crane, Herd GT77 spreader, LMB, 60" blade, M1 abrams turret.
    PT422 (6/23/05) photo page

  4. #4
    Epic Contributor MossRoad's Avatar
    Join Date
    Aug 2001
    Posts
    23,481
    Location
    South Bend, Indiana (near)
    Tractor
    Power Trac PT425 2001 Model Year

    Default Re: Replacing Kohler Command in PT 425

    A guess a link would have been helpful... sorry.

    Lawn Mower Parts
    MossRoad

    Click On My Little Tractor
    To See Pictures And Videos
    Of It In Action!!!


  5. #5
    Gold Member
    Join Date
    Sep 2006
    Posts
    346
    Location
    Owego, NY
    Tractor
    PT422 w/ EH72FI engine swap

    Default Re: Replacing Kohler Command in PT 425

    When in doubt, go with the larger one... you'd only have to replace the love joy style coupler if you choose wrong. I believe PT machines a coupler that fits the 1 7/8" shaft. (At least that's what I recall since I got mine through them.)

  6. #6
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    17,119
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Replacing Kohler Command in PT 425

    These are the only shaft sizes that I saw on the horizontal Kohler engines,

    1 in

    1 1/8

    1 1/4

    1 7/16
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  7. #7
    Gold Member
    Join Date
    Sep 2006
    Posts
    346
    Location
    Owego, NY
    Tractor
    PT422 w/ EH72FI engine swap

    Default Re: Replacing Kohler Command in PT 425

    JJ,

    I went back and checked what my replacement Robin shaft size was, and it was 1 7/16" (vs 1 7/8"). So to correct my previous statement, "PT machines a coupler that fits the 1 7/16" shaft". It was $40 or so.

  8. #8
    Platinum Member tmarks11's Avatar
    Join Date
    May 2005
    Posts
    647
    Location
    Port Orchard, WA
    Tractor
    2005 Power Trac 422

    Default Re: Replacing Kohler Command in PT 425

    JJ (as is usually the case) is right. I started the 1-7/8" fable by misquoted Pajoube's post. Pajoube also stated the Kohler in his PT425 was the 1-7/16" variant.

    http://www.tractorbynet.com/forums/p...ml#post1696791
    -----------------------------------------------------
    Now in Port Orchard, WA
    2005 PT-422
    4n1 bucket, minihoe, auger, 48" mower, land pride aerator, tow adaptor, forklift, crane, Herd GT77 spreader, LMB, 60" blade, M1 abrams turret.
    PT422 (6/23/05) photo page

  9. #9
    New Member
    Join Date
    Mar 2013
    Posts
    5
    Location
    La Grande Oregon
    Tractor
    2003 Power Trac 425

    Default Re: Replacing Kohler Command in PT 425

    I really appreciate all of the advice. Wondering if Pajoub's PT was a 2001-2003 model. If so then it is quite possible that mine is the 1 7/16 shaft. Will probably call Jack's and the Small E Engine Warehouse to compare cost. I would be willing to pay more for the EFI model if it would work. Believe me I will do whatever is necessary to keep this machine running. My wife looks at it as indispensable. It allows her to do a lot of landscaping work that she would normally be unable to perform.

  10. #10
    Platinum Member tmarks11's Avatar
    Join Date
    May 2005
    Posts
    647
    Location
    Port Orchard, WA
    Tractor
    2005 Power Trac 422

    Default Re: Replacing Kohler Command in PT 425

    Quote Originally Posted by cherylspt View Post
    = Wondering if Pajoub's PT was a 2001-2003 model. If so then it is quite possible that mine is the 1 7/16 shaft.
    According to Pajoub's signature block on the above referenced post, he has a 2003 PT-425. PM him at that link, maybe he will respond.
    -----------------------------------------------------
    Now in Port Orchard, WA
    2005 PT-422
    4n1 bucket, minihoe, auger, 48" mower, land pride aerator, tow adaptor, forklift, crane, Herd GT77 spreader, LMB, 60" blade, M1 abrams turret.
    PT422 (6/23/05) photo page

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