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Figure 60
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 57).
Important: The sail part of the blade must be
pointing upward, toward the inside of the mower
to ensure proper cutting (Figure 57).
2. For 48 inch mower decks, install the blade, curved
washer, and blade bolt (Figure 57).
3. For 36 inch mower decks, install the blade, stiffener,
curved washer, and blade bolt (Figure 58).
4. Torque the blade bolt to 85-110 ft-lb (115-140 N-m).
Correcting the Mower Quality
of Cut
If one deck blade cuts lower than the other, correct as follows.
Note: Tire air pressure is critical in these procedures. Make
sure all tires have correct pressure.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position. Disconnect the spark plug wire(s) from the
spark plug(s).
3. Adjust the tire pressure in the rear tires to specifications.
4. Check that the blades and spindle shafts are not bent.
Refer to Checking for Bent Blades.
5. Set the height-of-cut to the 4 inch (101.6 mm) position.
Refer to Adjusting the Height-Of-Cut.
6. Perform the steps in the following sections Frame
Set Up, Checking Front-to-Rear Pitch, and Checking
Side-to-Side Leveling.
2. Balancer
Frame Set Up
Checking the Carrier Frame and Engine
Deck Alignment
Note: Misalignment can cause excess wear on the PTO
drive belt.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Place a long straight edge on top of the engine deck as
shown in Figure 61.
4. At the carrier frame cross channel, measure the height
at location A (Figure 61). This measurement must be
1-5/16 inch (33 mm), plus or minus a 1/4 inch (6 mm).
5. If the height at location A is not correct, adjustment
is needed.
6. Loosen the carrier frame mounting bolts on both sides
of the machine (Figure 61).
7. Align the carrier frame and engine deck to match
1-5/16 inch (33 mm), plus or minus a 1/4 inch (6 mm)
at location A (Figure 61).
8. Tighten the carrier frame mounting bolts on both sides
of the machine.
1. Carrier Frame
2. Top of engine deck
3. Carrier frame mounting
bolts
38
Figure 61
4. Location A, 1-5/16 inch
(33 mm) ±1/4 inch (6 mm)
5. Straight edge
6. Carrier frame cross
channel
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