Toro 74020 Operator's Manual page 66

Removing the Blades
Replace the blades if they hit a solid object, or if the
blade is out of balance or bent.
1. Place a wrench on the flat of the spindle shaft or
hold the blade end using a rag or thickly padded
glove.
2. Remove the blade bolt, bushing, and blade from
the spindle shaft
Figure 91
1. Sail area of the blade
2. Blade
3. Flat of the spindle shaft
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both
ends of the blade
Note:
Maintain the original angle.
Note:
The blade retains its balance if the same
amount of material is removed from both cutting
edges.
Figure 92
1. Sharpen at original angle.
2. Check the balance of the blade by putting it on a
blade balancer (Figure
(Figure 91).
4. Bushing
5. Blade bolt
(Figure 92).
93).
Note:
If the blade stays in a horizontal position,
the blade is balanced and can be used.
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 bushing through the blade with the
bushing flange on the bottom (grass) side of the
blade (Figure
g295816
1. Bushing
2. Install the bushing/blade assembly into the
spindle shaft
g000552
66
Figure 93
2. Balancer
94).
Figure 94
(Figure 95).
(Figure 92).
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