Park the machine on a level surface.
Engage the parking brake.
Raise the mower deck to the TRANSPORT position; refer to your Operator’s Manual.
Shut off the engine and remove the key.
Rotate the mower deck to the SERVICE position; refer to your Operator’s Manual.
Grasp the end of the blade using a rag or thickly-padded glove.
Remove the blade bolt, anti-scalp cup, and blade from the spindle shaft (Figure 1).
Retain the parts for later installation.

Note: In the steps below, the bolts are threaded into the mower deck. Remove the nuts before removing the bolts.
Remove the 2 flange nuts holding the baffles in place (Figure 2).
Remove the 2 bolts and 2 nuts from the adjustable flow baffle (Figure 2).
Remove the 3 bolts and 3 nuts holding the baffles in place (Figure 2).
Retain the baffles and hardware for use when changing back to side-discharge mode.

Parts needed for this procedure:
| Discharge cover plate | 1 |
| Carriage bolt (5/16 x 7/8 inch) | 1 |
| Flange nut (5/16 inch) | 1 |
| Carriage bolt (3/8 x 1-1/4 inches) | 2 |
| Locknut (3/8 inch) | 2 |
Secure the discharge cover plate to the outside of the mounting bracket using 2 carriage bolts (3/8 x 1-1/4 inches) and 2 locknuts (3/8 inch) as shown in Figure 3.
Secure the tab to the inside of the mower deck using 1 carriage bolt (5/16 x 7/8 inch) and 1 flange nut (5/16 inch) as shown in Figure 3.

Parts needed for this procedure:
| Left baffle | 1 |
| Center baffle | 1 |
| Right baffle | 1 |
| Carriage bolt (3/8 x 1 inch) | 8 |
| Locknut (3/8 inch) | 8 |
Note: Loosely install the baffles to align the baffles with all the holes in the mower deck (Figure 4).
Position the right baffle into the mower deck.
Loosely install the right baffle to the discharge plate using 1 carriage bolt (3/8 x 1 inch) and 1 locknut (3/8 inch) as shown in Figure 4.
Loosely install the right baffle to the mower deck using 2 carriage bolts (3/8 x 1 inch) and 2 locknuts (3/8 inch) as shown in Figure 4.
Position the left baffle into the mower deck.
Loosely install the left baffle to the mower deck using 2 carriage bolts (3/8 x 1 inch) and 2 locknuts (3/8 inch) as shown in Figure 4.
Position the center baffle into the mower deck.
Loosely install the center baffle to the right baffle and left baffle using 2 carriage bolts (3/8 x 1 inch) and 2 locknuts (3/8 inch) as shown in Figure 4.
Loosely install the center baffle to the mower deck using 1 carriage bolt (3/8 x 1 inch) and 1 locknut (3/8 inch) as shown in Figure 4.

Parts needed for this procedure:
| Kicker | 2 |
| Carriage bolt (5/16 x 7/8 inch) | 4 |
| Flange nut (5/16 inch) | 4 |
Install the blade, anti-scalp cup, and blade bolt and tighten the blade bolt to 115 to 149 N∙m (85 to 110 ft-lb) as shown in Figure 7.
Important: The curved part of the blade must point toward the inside of the mower deck to ensure proper cutting.
Note: After striking a foreign object, torque all spindle-pulley nuts to 115 to 149 N∙m (85 to 110 ft-lb).

Tighten all nuts and bolts for the baffles.
Rotate the blades and ensure that there is clearance between the blades and the baffles. If there is not, loosen the baffle(s) until there is clearance and then secure the baffle(s).
Rotate the mower deck to the MOWING position; refer to your Operator’s Manual.