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

5. Rotate the marked end of the blade to the 3 and
9 o'clock positions
heights.
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±.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.
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
(Figure 87).
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. 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
(Figure 86) and measure the
(Figure 87).
Figure 87
2. Shims
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
The blade must be replaced if a solid object is hit,
the blade is out of balance, or if the blade 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 cutting deck to the highest position,
shut the engine off, and engage the parking
brake. Block the cutting 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, and blade from the spindle shaft
88).
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1. Blade bolt
3. Install the blade, sail facing toward the cutting
deck, with the anti-scalp cup and blade bolt
(Figure 88). Torque the blade bolt to 115 to 149
N-m (85 to 110 ft-lb).
66
(Figure
Figure 88
2. Anti-scalp cup
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