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Picture guide: how to change belt on Toro Proline 21"

Discussion in 'Mechanic and Repair' started by z_clark, May 22, 2007.

  1. z_clark

    z_clark LawnSite Senior Member
    Messages: 369

    I wish more people would post up "how-to" posts. I usually take pics as I take things apart any ways, so here is my first "How To" post!

    HOW TO REPLACE THE DRIVE BELT ON A TORO PROLINE 21" (or Exmark metro 21"):

    1. Remove black cover w/ two screws.

    2. Inspect belt. (see this one is frayed)

    3. Remove blade.

    4. Remove crank sleeve and housing. The crank sleeves pulls straight out. The housing has 3 bolts.

    5. Slide old belt off crank. Thread new belt in. It is very important to attach the belt to the tranny pulley BEFORE the crank pulley and BEFORE you re-assemble the cover on the bottom.

    6. Put it all back together. Note the "Key" on the crank has to match the crank sleeve.

    Total time spent = .5 hour

    It is a 3 year old mower with about 1,000 hours on it.
  2. jphag

    jphag LawnSite Member
    Messages: 219

    How do you remove the crank sleeve?
  3. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    It's just a spacer and should slide off the crank once the blade adapter is removed.

    BTW Clark,

    Good job, But flip the unit up on the left side to avoid oil running out of the breather all over.
  4. z_clark

    z_clark LawnSite Senior Member
    Messages: 369

    Some times the crank sleeve needs come convincing w/ some lube or rust-buster or hammer. :hammerhead:


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