Blade Maintenance; Blade Safety; Checking For A Bent Blade; Removing And Installing The Cutting-Unit Blade(S) - Toro Groundsmaster 4000 Operator's Manual

Blade Maintenance

Blade Safety

•
Inspect the blade periodically for wear or damage.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace or sharpen the
blades; never straighten or weld them.
•
On multi-bladed machines, take care as rotating 1
blade can cause other blades to rotate.

Checking for a Bent Blade

After striking a foreign object, inspect the machine
for damage and make repairs before starting
and operating the equipment. Torque all of the
spindle-pulley nuts to 176 to 203 N∙m (130 to 150
ft-lb).
1. Position the machine on a level surface, raise
the cutting unit, engage the parking brake, put
the traction pedal in
in the O position, shut off the engine, and
FF
remove the ignition key.
Note:
Block the cutting unit to prevent it from
accidentally falling.
2. Rotate the blade until the ends face forward and
backward and measure from the inside of the
cutting unit to the cutting edge at the front of the
blade (Figure 126).
Note:
Remember this dimension.
Figure 126
3. Rotate the opposite end of the blade forward
and measure between the cutting unit and
cutting edge of the blade at the same position
as in step 2.
Note:
The difference between the dimensions
obtained in steps
(1/8 inch). If the dimension exceeds 3 mm (1/8
inch), the blade is bent and must be replaced;
refer to Removing and Installing the Cutting-Unit
Blade(s) (page 79).
Removing and Installing
the Cutting-Unit Blade(s)
Replace the blade if it hits a solid object, is out
of balance, or is bent. Always use genuine Toro
, put the PTO lever
NEUTRAL
2 and 3 must not exceed 3 mm
replacement blades to ensure safety and optimum
performance.
1. Park the machine on a level surface, raise the
cutting unit to the highest position, engage the
parking brake, shut off the engine, and remove
the key.
Note:
Block the cutting unit 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
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:
must be pointing toward the inside of the
cutting unit to ensure proper cutting.
Note:
After striking a foreign object, torque all
spindle-pulley nuts to 115 to 149 N∙m (85 to 110
ft-lb).
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Inspecting and Sharpening
the Cutting Unit 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.
Maintain sharp blades throughout the cutting season.
Sharp blades create a clean cut without tearing or
shredding the grass blades.
Check the blades for any wear or damage. The sail
lifts the grass up straight, thereby producing an even
cut and gradually wears down during operation.
1. Park the machine on a level surface, raise the
cutting unit, engage the parking brake, put the
traction pedal in
in the O
FF
remove the key from the ignition.
79
(Figure
Figure 127
2. Anti-scalp cup
The curved part of the blade
, put the PTO lever
NEUTRAL
position, shut off the engine, and
127).
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