Checking For Bent Blades; Removing The Blades; Sharpening The Blades - Toro TimeCutter Z4200 Operator's Manual

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1. Cutting edge
2. Curved area
2_
Figure 33
3. Wear/slot forming
Checking for Bent Blades
1. Rotate the blades until the ends face forward and
backward (Figure 34). Measure from a level surface
to the cutting edge, position 1.8, of the blades
(Figure 34). Note this dimension.
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Removing the Blades
The blades must be replaced if a solid object is hit,
if the blade is out of balance, or the blade is bent.
To ensure optimum performance and continued
safety conformance of the machine, use genuine Toro
replacement blades. Replacement blades made by other
manufacturers may result in non-conformance vdth
safeff standards.
Hold the blade end using a rag or thickly-padded glove.
Remove the blade bolt, curved washer, blade stiffener,
and blade from the spindle shaft (Figure 35).
2
5
3
4
1. Sail area of blade
2. Blade
3. Curved washer
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Figure 35
4. Blade bolt
5. Blade stiffener
ST-w V w
Figure 34
,
3.
Rotate the opposite ends of the blades forward.
Measure from a level surface to the cutting edge of
the blades at the same position as in step 1. The
difference between the dimensions obtained in steps
1 and 2 must not exceed 1/8 inch (3 ram). If this
dimension exceeds 1/8 inch (3 ram), the blade is
bent and must be replaced. Refer to Removing the
Blades and Installing the Blades.
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.
Sharpening the Blades
,
Use a file to sharpen the cutting edge at both ends
of the blade (Figure 36). Maintain the original angle.
The blade retains its balance if the same amount of
material is removed from both cutting edges.
Figure 36
1. Sharpen at original angle
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,
Check the balance of the blade by putting it on a
blade balancer (Figure 37). 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 36). Repeat this
procedure until the blade is balanced.
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