Toro 31698, Руководство оператора, Страница: 92 / 100

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
one 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 cutting unit.
2. Perform the pre-maintenance procedure; refer
to
Pre-Maintenance Procedures (page 63) .
3. Block the cutting unit to prevent it from
accidentally falling.
4. 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 140 ).
Note:
Record this dimension.
g004740
Figure 140
5. 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
4 .
Note:
The difference between the dimensions
obtained in steps 4 and 5 must not exceed 3 mm
(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 92) .
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
replacement blades to ensure safety and optimum
performance.
1. Park the machine on a level surface, raise the
cutting unit to the transport 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 (
Figure 141 ).
g004741
Figure 141
1. Blade bolt 2. Anti-scalp cup
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
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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