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-UN-16APR13

     Z400 Series 48 inch mower deck shown.

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

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   • 
     MXAL47122-UN-16APR13

     Loosen bolt (C) on belt guide.

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

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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-UN-16APR13

   Shown without sheave for clarity only.

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

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

    Item	Measurement	Specification
    Sheave Nut	Torque	47 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.