Servicing The Cutter Blade - Toro Groundsmaster 4500-D Operator's Manual

9:00
5. Rotate the marked end of the blade to the 3 and 9
o'clock positions (Figure
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 3.8 ± 2.2
mm (0.150 ± 0.090 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) shim 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.
12:00
3:00
6:00
G011353
Figure 72
72) and measure the heights.
61).
(Figure 73).
(Figure
Figure 73
2. Shims
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 3.8 ± 2.2 mm (0.150
± 0.090 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 3.
8. Secure the carriage bolts and flange nuts.
9. Again, verify the 12, 3, and 9 o'clock heights.

Servicing the Cutter Blade

Removing the Cutter Blade
Replace the blade if it hits a solid object, is out of balance,
or 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, turn
the key in the ignition switch to the O
engage the parking brake. Block the mower deck to
prevent it from falling accidentally.
2. Grasp the end of the blade using a rag or thickly
padded glove. Remove the blade bolt, anti-scalp cup,
73).
and blade from the spindle shaft
1. Blade bolt
3. Install the blade, sail facing toward the mower deck,
with the anti-scalp cup and blade bolt
4. Torque the blade bolt to 115 to 149 N∙m (85 to 110
ft-lb).
61
position, and
FF
(Figure 74).
2
1
G011355
Figure 74
2. Anti-scalp cup
(Figure 74).