Toro 31051 Operator's Manual page 74

Sharpening and Balancing the Wing Blades
1. Use a file or sharpening tool to sharpen the
cutting edge at both ends of the blade assembly
(Figure 108).
Note:
Maintain the original angle–22°.
Note:
The blade keeps its balance if you
remove the same amount of material from both
cutting edges.
Figure 108
1. Sharpen at the original angle–22°.
2. Check the balance of the blade assembly by
putting it on a blade balancer
Note:
If the blade assembly stays in a horizontal
position, the blade assembly balances and it is
ready for use.
Note:
If the blade assembly is not balanced,
file some metal off the heavy end of the blade in
the sail area only
Figure 109
1. Blade assembly
3. Repeat this procedure until the blade assembly
balances.
(Figure 109).
(Figure 108).
2. Balancer
Installing the Blades
Installing the Center Blade
1. Hold the blade end using a cloth or a thickly
padded glove.
2. Install the blade using the previously removed
blade bolt, blade retainer, spring lock washer,
and curved washer
Important:
be pointing upward toward the inside of the
mower to ensure proper cutting.
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1. Blade bolt
2. Blade retainer
3. Spring lock washer
3. Torque the blade bolt to 53 N∙m (39 ft-lb).
Installing the Wing Blade Assembly
Important:
The right blade assembly blade bolt
has a left-handed thread. Ensure that you turn the
blade bolt in the proper direction; otherwise, you
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could cause damage.
1. Hold the wing blade assembly using a cloth or a
thickly padded glove.
2. Install the wing blade assembly using the
previously removed disc bolt, spring lock
washer, blade retainer, and curved washer
(Figure 111).
Important:
be pointing upward toward the inside of the
mower to ensure proper cutting.
74
(Figure 110).
The sail area of the blade must
Figure 110
4. Curved washer
5. Center blade
The sail area of the blades must
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