Toro TimeCutter HD ZX4800 Operator's Manual page 39

Removing the Blades
The blades must be replaced if a solid object is hit, if the blade
is out of balance, or if the blade is bent. For best performance
and continued safety conformance of 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
1
2
3
4
Figure 55
1. Sail area of the blade
2. Blade
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (Figure 56).
Note: Maintain the original angle.
Note: The blade retains its balance if the same amount
of material is removed from both cutting edges.
Figure 56
1. Sharpen at original angle.
2. Check the balance of the blade by putting it on a blade
balancer (Figure 57).
Note: If the blade stays in a horizontal position, the
blade is balanced and can be used.
55).
G010341
3. Curved washer
4. Blade bolt
Note: If the blade is not balanced, file some metal off
the end of the sail area only
1. Blade
3. Repeat this procedure until the blade is balanced.
Installing the Blades
1. Install the blade onto the spindle shaft
Important: The curved part of the blade must be
pointing upward toward the inside of the mower to
ensure proper cutting.
2. Install the curved washer (cupped side toward the
blade) and the blade bolt
3. Torque the blade bolt to 135 to 150 N∙m (100 to 110
ft-lb).
g010341
1. Sail area of the blade
2. Blade
g000552
39
(Figure 56).
Figure 57
2. Balancer
(Figure
(Figure 55).
Figure 58
3. Curved washer
4. Blade bolt
g000553
55).
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