Toro 78281 Operator's Manual page 15

3. Inspect the blade(s), especially the curved area (Fig.
21). If you notice any damage, wear, or a slot forming
in this area (Fig. 21), immediately install a new blade.
Figure 21
1. Cutting edge
2. Curved area
Removing the Blade(s)
1. Remove the mower; refer to Removing the Mower,
page 9.
2. Carefully tip the mower over.
3. Remove the bolt, blade stiffener and blade (Fig. 22). A
block of wood may be wedged between the blade and
the mower to lock the blade when you are removing the
bolt.
4. Inspect all parts. If a defect or damage is noticed, install
new parts.
4
Figure 22
1. Blade
2. Blade stiffener
1
2
3
151
3. Wear/slot forming
1
2
3
m-2376
3. Bolt
4. Spindle
15
Sharpening the Blade(s)
1. Use a file to sharpen the cutting edge at both ends of the
blade (Fig. 23). Maintain the original angle. The blade
retains its balance if the same amount of material is
removed from both cutting edges.
1
Figure 23
1. Sharpen at original
angle
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 24). 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 back side
of the blade. Repeat this procedure until the blade is
balanced.
1
Figure 24
1. Blade
2
2. Balancer