Inspecting And Sharpening The Blade - Toro Groundsmaster 4300-D Operator's Manual

Inspecting and Sharpening
the Blade
1. Raise the cutting deck to the highest position,
turn the key in the ignition switch to the O
position, and engage the parking brake.
2. Block the cutting deck to prevent it from falling
accidentally.
3. Examine the cutting ends of the blade carefully,
especially where the flat and curved parts of the
blade meet (Figure
Note:
Since 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.
4. If wear is noticed
refer to Servicing the Blade Plane (page
DANGER
If the blade is allowed to wear, a slot
will form between the sail and flat part
of the blade (Figure
piece of the blade may break off and be
thrown from under the housing, possibly
resulting in serious injury to yourself or
bystanders.
• Inspect the blade periodically for wear
or damage.
• Always replace a worn or damaged
blade.
Figure 97
1. Cutting edge
2. Sail
5. Inspect the cutting edges of all blades. Sharpen
the cutting edges if they are dull or nicked.
Sharpen only the top of the cutting edge and
maintain the original cutting angle to make sure
that it is sharp (Figure
97).
(Figure 97), replace the blade;
96). Eventually a
3. Wear/slot/crack
98).
6. If dull or nicked, sharpen only the top cutting
edge while maintaining the original cutting angle
(Figure
Note:
same amount of metal is removed from both
FF
cutting edges.
1. Sharpen at this angle only
7. To check the blade for being straight and
parallel, lay the blade on a level surface and
65).
check its ends.
Note:
lower than the center, and the cutting edge lower
than the heel of the blade. This blade produces
a good quality of cut and requires minimal power
from the engine. By contrast a blade that is
higher at the ends than the center, or if cutting
edge is higher than the heel, the blade is bent or
warped and must be replaced.
8. Install the blade, sail facing toward cutting deck,
with the anti-scalp cup and blade bolt. Torque
the blade bolt to 115 to 149 N∙m (85 to 110 ft-lb).
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67
98).
The blade will remain balanced if the
Figure 98
Position the ends of the blade slightly
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