Correcting The Mower Quality Of Cut - Toro 30074 Operator's Manual

Figure 59
36 inch and 52 inch Mower Decks
1. Sail Area of 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 60). Maintain the original angle.
The blade retains its balance if the same amount of
material is removed from both cutting edges.
Figure 60
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Figure 61).
3. 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 58)
4. . Repeat this procedure until the blade is balanced.
4. Curved washer
5. Blade Bolt
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 58).
Important: The sail part of the blade must be
pointing upward, toward the inside of the mower
to ensure proper cutting (Figure 58).
2. For 40 inch and 48 inch mower decks, install the
blade, curved washer, and blade bolt (Figure 58).
3. For 36 inch and 52 inch mower decks, install the
blade, stiffener, curved washer, and blade bolt
(Figure 59).
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; refer to
Drive System Maintenance (page 30) .
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 in
Operation (page 12).
6. Perform the steps in the following sections Frame
Set Up, Checking Front-to-Rear Pitch, and Checking
Side-to-Side Leveling.
39
Figure 61
2. Balancer