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3. Rotate the opposite end of the blade forward. Measure
between the cutting unit and cutting edge of the blade at
the same position as in step 2. The difference between
the dimensions obtained in steps 2 and 3 must not
exceed 1/8 in. (3 mm). If the dimension exceeds 1/8 in.
(3 mm), the blade is bent and must be replaced; refer to
Removing the Cutter Blade, page 51.
Removing and Installing the
Cutter 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 be sure of safety and
optimum performance. Never use replacement blades made
by other manufacturers because they could be dangerous.
1. Raise the cutting unit to the highest position, engage the
parking brake, stop the engine, and remove the ignition
key. Block the cutting unit to prevent it from
accidentally falling.
2. Grasp the end of the blade using a rag or thickly padded
glove. Remove the blade bolt, anti-scalp cup, and blade
from the spindle shaft (Fig. 84).
Figure 84
1. Blade bolt
3. Install the blade, anti-scalp cup, and blade bolt. Tighten
the blade bolt to 85–110 ft.-lb. (115–149 N⋅m).
Important
The sail (curved part) of the blade must be
pointing toward the inside of the cutting unit to ensure
proper cutting.
2
1
2. Anti-scalp cup
51
Inspecting and Sharpening the
Cutter Blade(s)
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. Trying to repair a damaged blade
may result in discontinued safety certification of
the product.
• Inspect the blade periodically for wear or
damage.
• Never try to straighten a blade that is bent or
weld a broken or cracked blade.
• Replace a worn or damaged blade.
Two areas must be considered when checking and servicing
the cutter blade—the sail and the cutting edge. Both cutting
edges and the sail, which is the turned up portion opposite
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 will
gradually wear down during operation, and this condition is
normal. As the sail wears down, the quality-of-cut will
degrade somewhat, even though 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.
1. Position the machine on a level surface. Raise the
cutting unit, engage the parking brake, put the traction
pedal in neutral, put the PTO lever in the Off position,
stop 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 (Fig. 85-A). Since 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 (Fig. 85-B), replace the blade.
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