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Removing and Installing the
Mower Blade(s)
The blade must be replaced if a solid object is hit, the blade
is out of balance, or if the blade is bent. Always use genuine
Toro replacement blades to ensure safety and optimum
performance.
1. Raise the mower deck to the highest position, engage
the parking brake, shut off the engine, and remove the
ignition key.
Note: Block the mower deck to prevent it from
accidentally falling.
2. Grasp the end of the blade using a rag or thickly-padded
glove.
3. Remove the blade bolt, anti-scalp cup, and blade from
the spindle shaft
(Figure
1. Blade bolt
4. Install the blade, anti-scalp cup, and blade bolt and
tighten the blade bolt to 115 to 149 N∙m (85 to 110
ft-lb).
Important: The curved part of the blade must be
pointing toward the inside of the mower deck to
ensure proper cutting.
Note: After striking a foreign object, torque all of the
spindle-pulley nuts to 115 to 149 N∙m (85 to 110 ft-lb).
Inspecting and Sharpening the
Mower Blade(s)
Consider 2 areas when checking and servicing the mower
blade—the sail and the cutting edge. Both cutting edges
and the sail, which is the turned-up portion opposite of the
cutting edge, contribute to a good quality of cut. The sail
is important because it lifts the grass up straight, thereby
producing an even cut. However, the sail gradually wears
down during operation. As the sail wears down, the quality of
cut degrades somewhat, although the cutting edges are sharp.
The cutting edge of the blade must be sharp so that the grass
is cut rather than torn. A dull cutting edge is evident when
the tips of the grass appear brown and shredded. Sharpen the
cutting edges to correct this condition.
84).
Figure 84
2. Anti-scalp cup
1. Position the machine on a level surface, raise the mower
deck, engage the parking brake, put the traction pedal
in
, put the PTO lever in the O
NEUTRAL
shut off the engine, and remove the ignition key.
2. Examine the cutting ends of the blade carefully,
especially where the flat and curved parts of the blade
meet
(Figure
85).
Note: Because sand and abrasive material can wear
away the metal that connects the flat and curved parts
of the blade, check the blade before using the mower.
If wear is noticed
1. Cutting edge
2. Curved area
3. Examine the cutting edges of all of the blades and
sharpen the cutting edges if they are dull or nicked
(Figure
86).
Note: Sharpen only the top of the cutting edge and
maintain the original cutting angle to ensure sharpness
(Figure
86). The blade will remain balanced if the same
amount of metal is removed from both cutting edges.
59
FF
(Figure
85), replace the blade.
Figure 85
3. Wear/slot forming
4. Crack
position,
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