Correcting The Mower Quality Of Cut - Toro 74583 Operator's Manual

the machine, use genuine Toro replacement blades.
Replacement blades made by other manufacturers may
result in non-conformance with safety standards.
1. Hold the blade end using a rag or thickly-padded
glove.
2. Remove the blade bolt, curved washer, and blade
from the spindle shaft (Figure 86).
Figure 86
1. Sail Area of Blade
2. Blade
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends
of the blade (Figure 87). Maintain the original angle.
The blade retains its balance if the same amount of
material is removed from both cutting edges.
Figure 87
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Figure 88). 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 86). Repeat this
procedure until the blade is balanced.
3. Curved washer
4. Blade Bolt
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 89).
Important: The curved part of the blade must
be pointing upward toward the inside of the
mower to ensure proper cutting.
2. Install the spring disk and blade bolt. The spring
disk cone must be installed toward the bolt head
(Figure 89). Torque the blade bolt to 85-110 ft-lb
(115-150 N-m).
1. Sail Area of Blade
2. Blade
3. Spring Disk
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 the rear 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
56
Figure 88
2. Balancer
Figure 89
4. Blade Bolt
5. Cone Towards Bolt Head