Toro 74143 Operator's Manual page 51

by other manufacturers may result in non-conformance with
safety standards.
1. To hold the spindle shaft, use an open end wrench
(1-1/2) on the spindle shaft hex end.
2. Remove the blade bolt, curved washer, and blade from
the spindle shaft (Figure 78).
1
2
3
4
g017443
1. Sail Area of Blade
2. Blade
3. Curved washer
Sharpening the Blades
WARNING
When sharpening blade, pieces of blade could be
thrown and cause serious injury.
Wear proper eye protection when sharpening blade.
1. Use a file to sharpen the cutting edge at both ends of
the blade (Figure 79). Maintain the original angle. The
blade retains its balance if the same amount of material
is removed from both cutting edges.
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (Figure 80). If the blade stays in a horizontal
5
Figure 78
4. Blade Bolt
5. Spindle shaft hex end
Figure 79
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 81). Repeat this procedure
until the blade is balanced.
1. Blade
51
Figure 80
2. Balancer