Removing and Installing Drive Belt and Gearbox

NOTE: Except where otherwise indicated, the procedure for removing and installing the drive belt and gearbox is similar across all deck sizes.

Removing

1. Lower mower deck to the ground.

2. Remove mower deck belt shield.

3. Park machine safely. (See Parking Safely in the Safety section.)

4. 
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   Picture Note: 60 in. side discharge deck shown.

   Loosen nuts (A) and (B).

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5. Remove nut (C), tension spring (D) and rod (E) from mower deck.

6. Remove nuts and washer from (A) and (B).

7. 
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   Picture Note: 60 in. side discharge deck shown.

   Remove drive belt (F) from belt tensioner sheave (G).

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8. 
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   Picture Note: 60 in. side discharge deck shown.

   60 in. side discharge and 62 in. rear discharge decks:

   1. Remove four bolts (H) securing gearbox (I) to mower deck mounting brackets.

   2. Slide gearbox out from mounting brackets.

   3. Remove drive belt (J) from sheave.

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9. 
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   Picture Note: 72 in. side discharge deck shown.

   72 in. side discharge deck:

   1. Remove four bolts (K) holding gear box (L) to mower deck mounting brackets.

   2. Remove bolt and support bushing (M).

   3. Slide gear box out from mounting brackets.

   4. Remove drive belt (N) from sheave.

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Installing

Installation is done in the reverse order of removal.

NOTE: See belt routing diagram on mower deck idler arm.

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Picture Note: Viewed from rear of deck.

1. Route drive belt (A) around mower deck sheaves.

2. Loosen nut on sheave (B) to ease installation of belt.

3. Secure gearbox onto mower deck mounting brackets. Tighten bolts to specifications.

   Item	Measurement	Specification
   Gearbox to Mounting Bracket Bolts	Torque	73 N·m (54 lb.-ft.)

4. 183 cm (72 in.) deck only: Install the support bushing, bolt, and nut.

5. Adjust tension of mower deck drive belt. (See Adjusting Drive Belt Tension in this section.)