Replacing Mower Drive Belt (Z400 Series 48 and 54 in. Mowers)

  1. Park machine safely. (See Parking Safely in SAFETY section.)

  2. Allow engine and muffler to cool completely.

  3. Remove mower deck.

  4. Remove drive belt:

    • CAUTION: Components are installed under spring tension. Wear eye protection and use proper tools when installing and removing components with spring tension.

      MXAL47121
      MXAL47121-UN-16APR13

      Z400 Series 48 inch mower deck shown.

      Remove two bolts (A) and left and right belt covers (B).

    • MXAL47122
      MXAL47122-UN-16APR13

      Loosen bolt (C) on belt guide.

    • Loosen nut (D) and bolt (E) on sheaves, and remove belt from all sheaves.



  5. Inspect belt for wear or damage; replace as necessary.

  6. Clean top surface of mower deck and sheaves.

  7. Install belt on mower deck as shown.

  8. Install and tighten bolt (C) on belt guide.

  9. MXAL47123
    MXAL47123-UN-16APR13

    Shown without sheave for clarity only.

    Make sure belt guide (F) is indexed properly into hole (G) on tension arm (H).



  10. Tighten sheave nut (D) and bolt (E) to specification.

    ItemMeasurementSpecification
    Sheave NutTorque47 N·m (35 lb-ft)

  11. NOTE: Failure to seat belt properly on sheaves may result in belt damage.

    Make sure belt is properly seated on all sheaves, and install belt shields.

  12. Install mower deck.

MX00654,0000349-19-20130603