Removing And Installing The Cutting-Unit Blade(S); Inspecting And Sharpening The Cutting-Unit Blade(S) - Toro Groundsmaster 4500-D Operator's Manual

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
8. Secure the carriage bolts and flange nuts.
9. Verify the 12, 3, and 9 o'clock heights.
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 highest 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 124
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
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).
1 through 4.
(Figure 124).
2. Anti-scalp cup
Inspecting and Sharpening
the Cutting-Unit Blade(s)
Both the cutting edges and the sail, which is the
turned-up portion opposite of the cutting edge,
contribute to a good quality of cut. The sail lifts
the grass up straight, thereby producing an even
cut. However, the sail gradually wears down during
operation, lowering the quality of cut even though the
cutting edges are sharp. The cutting edge of the blade
must be sharp so that the grass is cut rather than torn.
A dull cutting edge leaves the tips of the grass brown
and shredded. Sharpen the cutting edges to correct
this condition.
1. Park the machine on a level surface, raise the
cutting units, engage the parking brake, put the
traction pedal in
in the O
FF
remove the key.
2. Examine the cutting ends of the blade carefully,
especially where the flat and curved parts of the
blade meet
Note:
Because sand and abrasive material
can wear away the metal that connects the flat
and curved parts of the blade, check the blade
before using the machine. If you notice wear,
(Figure 125), replace the blade.
g011355
79
, put the PTO lever
NEUTRAL
position, shut off the engine, and
(Figure 125).