Blade Maintenance; Blade Safety; Checking For A Bent Blade; Removing And Installing A Blade - Toro Groundsmaster 5900 Operator's Manual

Blade Maintenance

Blade Safety

DANGER
A worn or damaged blade can break, and a
piece of the blade could be thrown at you
or bystanders, 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.
•
Use care when checking the blades. Wrap the
blades or wear gloves, and use caution when
servicing the blades. Only replace 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 restarting and
operating the equipment. Torque all the spindle-pulley
nuts to 176 to 203 N·m (130 to 150 ft-lb).
1. Raise the mower deck.
2. Perform the pre-maintenance procedure; refer
to Pre-Maintenance Safety (page
3. Block the mower deck to prevent it from
accidentally falling.
4. Rotate the blade until the ends face forward and
backward, and measure from the inside of the
mower deck to the cutting edge at the front of
the blade (Figure
Note:
Record this dimension.
Figure 143
5. Rotate the opposite end of the blade forward
and measure between the mower deck and
cutting edge of the blade at the same position
as in step 4.
64).
143).
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 a Blade (page
92).
Removing and Installing a
Blade
Replace the blade if it hits a solid object, if it is out
of balance, or if it 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 mower deck to the highest position.
2. Perform the pre-maintenance procedure; refer
to Pre-Maintenance Safety (page
3. Block the mower deck to prevent it from
accidentally falling.
4. Grasp the end of the blade using a rag or
thickly padded glove and remove the blade bolt,
anti-scalp cup, and blade from the spindle shaft
(Figure 144).
1. Blade bolt
5. Install the blade, anti-scalp cup, and blade bolt.
6. Torque the blade bolt to 115 to 149 N·m (85 to
110 ft-lb).
Important:
must point toward the inside of the mower
deck to ensure proper mowing.
Note:
After striking a foreign object, torque all
the spindle-pulley nuts to 176 to 203 N·m (130
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to 150 ft-lb) and the blade bolts to 115 to 149
N·m (85 to 110 ft-lb).
92
4 and 5 must not exceed 3 mm
64).
Figure 144
2. Anti-scalp cup
The curved part of the blade
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