Blade Maintenance; Checking For A Bent Blade; Removing And Installing The Cutter Blade(S) - Toro 30411 Groundsmaster 4100-D Operator's Manual

Figure 89
1. Lift arm pin nut (2)
Figure 90
1. Wing deck cylinder pin nut (2)

Blade Maintenance

Checking for a Bent Blade

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. Block the cutting unit
to prevent it from accidentally falling.
2. Rotate the blade until the ends face forward
and backward (Figure 91). Measure from the
inside of the cutting unit to the cutting edge
at the front of the blade. Remember this
dimension.
Figure 91
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
inch (3 mm). If the dimension exceeds 1/8
inch (3 mm), the blade is bent and must be
replaced; refer to Removing and Installing the
Cutter Blade.
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
(Figure 92).
3. Install the blade, anti-scalp cup, and blade bolt.
Tighten the blade bolt to 85 to 110 ft-lb (115
to 149 N⋅m).
Important: The curved part of the blade
must be pointing toward the inside of the
cutting unit to ensure proper cutting.
Note: After striking a foreign object, torque
all the spindle pulley nuts to 130 to 150 ft-lb
(176 to 203 N⋅m).
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