Removing And Installing The Mower Blade(S) - Toro 30874 Operator's Manual

6. Compare the 12 o'clock measured height to the
height-of-cut setting. It should be within 0.7 mm (0.030
inch). The 3 and 9 o'clock heights should be 1.6 to 6.0
mm (0.060 to 0.240 inch) higher than the 12 o'clock
setting and within 2.2 mm (0.090 inch) of each other.
If any of these measurements are not within specification,
proceed to Adjusting the Blade Plane (page
Adjusting the Blade Plane
Start with the front adjustment (change 1 bracket at a time).
1. Remove the height-of-cut bracket, (front, left, or right)
from the deck frame
2. Adjust 1.5 mm (0.060 inch) shims and/or 0.7 mm
(0.030 inch) shims between the deck frame and bracket
to achieve the desired height setting
1. Height-of-cut bracket
3. Install the height-of-cut bracket to the deck frame with
the remaining shims assembled below the height-of-cut
bracket.
4. Secure the socket-head bolt/spacer and flange nut.
Note: Socket-head bolt/spacer are held together with
thread-locking adhesive to prevent the spacer from
falling inside the deck frame.
5. Verify the 12 o'clock height and adjust if needed.
6. Determine if only 1 or both (right and left)
height-of-cut brackets need to be adjusted.
Note: If the 3 or 9 o'clock side is 1.6 to 6.0 mm (0.060
to 0.240 inch) higher than the new front height then no
adjustment is needed for that side. Adjust the other
side to within ± 2.2 mm (0.090 inch) of the correct side.
7. Adjust the right and/or left height-of-cut brackets by
repeating steps 1 through 4.
8. Secure the carriage bolts and flange nuts.
9. Verify the 12, 3, and 9 o'clock heights.
60).
(Figure 75).
(Figure
Figure 75
2. Shims
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. Park the machine on a level surface, 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
75).
the spindle shaft
g011354
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).
60
(Figure 76).
G011355
Figure 76
2. Anti-scalp cup
2
1
g011355