Inspecting And Sharpening The Blade - Toro 30853 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
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 66).
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 (Figure
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 65). Eventually a 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.
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
6. If dull or nicked, sharpen only the top cutting edge
while maintaining the original cutting angle
Note: The blade will remain balanced if the same
amount of metal is removed from both cutting edges.
position, and
FF
66), replace the blade; refer
50).
Figure 66
3. Wear/slot/crack
(Figure
(Figure
1. Sharpen at this angle only
7. To check the blade for being straight and parallel, lay
the blade on a level surface and check its ends.
Note: Position the ends of the blade slightly 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).
67).
67).
52
Figure 67