Toro 30488, Руководство оператора

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Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (
Figure 65 ). Maintain the original angle. The
blade retains its balance if the same amount of material
is removed from both cutting edges.
Figure 65
1. Sharpen at the original angle
2. Check the balance of the blade by putting it on a blade
balancer (
Figure 66 ).
Note:
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 63 ).
3. Repeat this procedure until the blade is balanced.
Figure 66
1. Blade 2. Balancer
Installing the Blades
1. Install the blade onto the spindle shaft ( Figure 63 ).
Important:
The sail part of the blade must be
pointing upward, toward the inside of the mower
to ensure proper cutting (
Figure 63 ).
2. For 48–inch mower decks, install the blade, curved
washer, and the blade bolt (
Figure 63 ).
3. For 52-nch mower decks, install the blade, stiffener,
curved washer, and the bolt (
Figure 64 ).
4. Torque the blade bolt to 115 to 140 N-m (85 to 110
ft-lb).
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 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.
5. Check that the blades and spindle shafts are not bent;
refer to
Checking for Bent Blades (page 45) .
6. Set the height-of-cut to the 101.6 mm (4 inches)
position; refer to
Adjusting the Height-of-Cut (page
20) .
7. Perform the steps in Setting up the Frame (page 48) .
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