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  1. #1
    New Member
    Join Date
    Sep 2010
    Posts
    3
    Tractor
    Craftsman 917.28934

    Default TuffTorq Tranny problems

    I have a Craftsman lawn tractor (917.28934) that is 2 years 3 months old. Note the tractor is just 3 months out of warranty. The problem came about today (worked OK when I put it away a week ago). The problem is when backing the tractor up on a level surface it will move slowly. If backing up a slight (< 10 degrees) incline the tractor will not pull it self up the incline. Almost like a slipping clutch. In forward direction the tractor works fine. Lots of power and speed. I have checked all the linkages and cleaned the case to be sure there is nothing interfering with the linkage movement. This mower has 30.1 hours of operating time mowing a medium lawn. No hauling, snow blowing or other hard work on the tractor. The inclines are when backing around trees etc. Mostly flat yard.

    Tractor Specs:
    22Hp Kohler engine SV620
    42" Mower
    Tufftorq K46 BT

    Any suggestion are really appreciated.
    Thank you
    Last edited by craftsman1; 09-28-2010 at 07:48 AM.

  2. #2
    Silver Member
    Join Date
    Jul 2006
    Posts
    219
    Location
    Pittsburgh, Pa
    Tractor
    Chinese quality - Jinma 2420 - Ford 1900 - Steiner 420

    Default Re: TuffTorq Tranny problems

    I would try replacing the fluid in the tranny a first try. There are recommendations for it all over the web. The K46 isn't know as the most durable transmission ever made but with 30hrs on it that's barely used. There is a parts and service phone number for Tuff torq. I'm sure they can help you on this one. At the least though, I'd pull the transaxle and replace the fluid. Tuff torq has service recommendations on their web site last I checked. With pictures even.

    Steve

  3. #3
    New Member
    Join Date
    Sep 2010
    Posts
    3
    Tractor
    Craftsman 917.28934

    Default Re: TuffTorq Tranny problems

    Thanks Steve for the suggestion. Today is a rainy day so good time to work inside.

  4. #4
    Silver Member tornadowatchranch's Avatar
    Join Date
    Jun 2007
    Posts
    163
    Location
    NE Kansas
    Tractor
    Bobcat 335 for the fun stuff JD gt235 for the lawn

    Default Re: TuffTorq Tranny problems

    i had the same problem with mine and it turned out the cruise control (a lever on my right on my JD) was not all the way dis-engaged. It was not on enought to move it forward but it impeded reverse noticeably

    good luck

  5. #5
    New Member
    Join Date
    Sep 2010
    Posts
    3
    Tractor
    Craftsman 917.28934

    Default Re: TuffTorq Tranny problems

    Sears was just here and worked on the tractor. The technician found the bolts (self tappers into the transmission case) holding the transmission from rocking from front to back were gone thus allowing the belt to loosen (slipping belt on the transmission pulley when the clutch was released). The tech replaced the missing bolts with longer bolts (with nuts) that went through the case. Works great now. I purchased the extended warranty assuming I am going to have more problems. ha.

    Thanks for your suggestions. All information helps us seniors.

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