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Note: For the best performance, install a new blade before
the cutting season begins. During the year, file down any
small nicks to maintain the cutting edge.
DANGER
A worn or damaged blade can break, and a piece
of the blade could be thrown into the operator's
or bystander's area, resulting in serious personal
injury or death.
• Inspect the blade periodically for wear or
damage.
• Replace a worn or damaged blade.
Removing the Blade
Grasp the end of the blade using a rag or a thickly padded
glove. Remove the blade nuts, the anti-scalp cup, the
accelerator, and the blade (Figure 33).
Sharpening the Blade
File the top side of the blade to maintain its original cutting
angle (Figure 35A) and inner cutting edge radius (Figure 35B).
The blade will remain balanced if you remove the same
amount of material from both cutting edges.
Figure 35
1. Sharpen at this angle only. 2. Maintain the original radius
Balancing the Blade
1. Check the balance of the blade by placing the center
hole of the blade over a nail or screwdriver shank
clamped horizontally in a vise (Figure 36).
Figure 36
Note: You can also check the balance using a
commercially manufactured blade balancer.
2. If either end of the blade rotates downward, file that
end (not the cutting edge or the end near the cutting
edge). The blade is properly balanced when neither
end drops.
here.
Installing the Blade
1. Install a sharp, balanced Toro blade, the accelerator, the
anti-scalp cup, and the blade nuts. The sail of the blade
must point toward the top of the machine housing for
proper installation. Torque the blade nuts to 15 to 27
ft-lb (20 to 37 N-m).
WARNING
Operating the machine without the accelerator
in place can cause the blade to flex, bend, or
break, resulting in serious injury or death to
the operator or bystanders.
Do not operate the machine without the
accelerator.
2. Return the machine to its upright position.
3. Connect the wire to the spark plug.
24
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