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Figure 51
1. Sail area of the blade
2. Blade
3. Blade stiffener
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (Figure 52). Maintain the original angle. The
blade retains its balance if the same amount of material
is removed from both cutting edges.
Figure 52
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (Figure 53). If the blade stays in a horizontal
position, the blade is balanced and can be used. If the
blade is not balanced, file some metal off the end of
the sail area only (Figure 53). Repeat this procedure
until the blade is balanced.
Figure 53
1. Blade
4. Curved washer
5. Blade bolt
2. Balancer
Installing the Blades
Important: The sail part of the blade must be pointing
upward, toward the inside of the mower to ensure proper
cutting (Figure 53).
1. Install the blade, stiffener, curved washer, and blade
bolt to the spindle (Figure 53).
2. Torque the blade bolt to 115-140 N-m (85-110 ft-lb).
Correcting the Mower Quality
of Cut
If 1 deck blade cuts lower than the other, correct as follows.
Note: Tire air pressure is critical in these procedures. Make
sure all tires have the 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.
3. Disconnect the spark plug wire(s) from the spark
plug(s).
4. Adjust the tire pressure in the rear tires to specifications;
refer to Drive System Maintenance (page 26) .
5. Check that the blades and spindle shafts are not bent.
Refer to Checking for Bent Blades (page 37).
6. Set the height-of-cut to the 101.6 mm (4 inch) position.
Refer to Adjusting the Height-of-Cut (page 17).
7. Perform the steps in the following sections Setting
up the Frame (page 38), Checking the Mower Deck
Front-to-Rear Pitch (page 40), and Checking the
Mower Deck Side-to-Side Height (page 41).
Setting up the Frame
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 54.
4. At the carrier frame cross channel, measure the height
at location A (Figure 54).
Note: This measurement must be 33 mm (1-5/16
inch), plus or minus 6 mm (1/4 inch).
5. If the height at location A is not correct, adjustment
is needed.
38
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