Toro 30363N Operator's Manual page 57

2. Move the throttle lever to the Slow position, stop the
engine, remove the key, and wait for all moving parts
to stop before leaving the operating position.
3. Rotate the blades until the ends face forward and
backward (Figure 72). Measure from a level surface
to the cutting edge, position A, of the blades
(Figure 72). Note this dimension.
1. Measure here from blade
to hard surface
4. Rotate the opposite ends of the blades forward.
5. Measure from a level surface to the cutting edge of
the blades at the same position as in step 3 above.
The difference between the dimensions obtained in
steps 3 and 4 must not exceed 1/8 inch (3 mm). If
this dimension exceeds 1/8 inch (3 mm), the blade
is bent and must be replaced; refer to Removing the
Blades and Installing the Blades.
WARNING
A blade that is bent or damaged could break
apart and could seriously injure or kill you or
bystanders.
• Always replace bent or damaged blade with
a new blade.
• Never file or create sharp notches in the
edges or surfaces of blade.
Removing the Blades
Blades must be replaced if a solid object is hit, if the
blade is out of balance or is bent. To ensure optimum
performance and continued safety conformance of
the machine, use genuine Toro replacement blades.
Figure 72
2. Position A
Replacement blades made by other manufacturers may
result in non-conformance with safety standards.
WARNING
Contact with a sharp blade can cause serious injury.
Wear gloves or wrap sharp edges of the blade with
a rag.
1. Hold the blade end using a rag or thickly-padded
glove.
2. Remove the blade bolt, anti-scalp plate, and blade
from the spindle shaft (Figure 75).
Sharpening the Blades
WARNING
When sharpening blade, pieces of blade could be
thrown and cause serious injury.
Wear proper eye protection when sharpening
blades.
1. Sharpen the cutting edge at both ends of the blade
(Figure 73). Maintain the original angle. The blade
retains its balance if the same amount of material is
removed from both cutting edges.
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Figure 74). If the blade stays in a
horizontal position, the blade is balanced and can be
used. If the blade is not balanced, file some metal off
the end of the sail area only (Figure 75). Repeat this
procedure until the blade is balanced.
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 75).
57
Figure 73
Figure 74
2. Balancer