Removing And Installing The Mower Blade(S); Inspecting And Sharpening The Mower Blade(S) - Toro Groundsmaster 4100 Operator's Manual

Removing and Installing
the Mower Blade(s)
Replace the blade if it hits a solid object, is out of
balance, or if it 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 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 129
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)
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 lifts the grass up
straight, thereby producing an even cut. However, the
sail gradually wears down during operation degrading
the quality of cut, although the cutting edges are
sharp. The cutting edge of the blade must be sharp
so that the grass is cut rather than torn, which leaves
the tips of the grass looking brown and shredded.
Sharpen the cutting edges to correct this condition.
(Figure 129).
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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
in the O position, shut off the engine, and
FF
remove the key from the ignition.
2. Examine the cutting ends of the blade carefully,
especially where the flat and curved parts of the
blade meet (Figure
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 you notice wear
(Figure 130), replace the blade.
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
Note:
Sharpen only the top of the cutting
edge and maintain the original cutting angle
84
, put the PTO lever
NEUTRAL
130).
Figure 130
3. Wear/slot forming
4. Crack
131).
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