Transmission swap on a Walk Behind

Discussion in 'Lawn Mowing' started by Barkleymut, Jan 23, 2002.

  1. Barkleymut

    Barkleymut LawnSite Bronze Member
    Messages: 1,117

    My Lesco 36" WB has been slowly losing its transmission. I was happy to finish up the year without having to do surgery on her. I now want to replace the transmission which I have never done before but I wanted to make sure there were no surprises after I started. I know it is a Tecumseh 5 speed tranny. Any suggestions would be appreciated. Also anyone have a guess on how long it will take to replace? Thanks. Also I know it is the tranny and not just the belt under the frame as I have kept it plenty tight.
  2. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,699

    There are no suprises involved, it is straight forward. It should take you around 2 hours the first time you do it.
  3. I disagree on the surprises.

    1. Hex key/Allen screws are going to be real tight or frozen
    2. Make sure you take the "C" clip off the input shaft
    3. Make sure you use locktite on the gear shifter bolt when you reassemble
    4. For ease of greasing make sure you line the couplers back up by zerk fittings
    5. While you are doing so check the support bearings on the frame of the mower

      If you are any good with tools about 45 min to an hour.
  4. Most likely there is no need to replace the entire tranny. The weak link is the input shaft bearings. They cost about $40 and are easy to rebuild.

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