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Figure 25
1. Cutting edge
2. Curved area
3.
Examine the cutting edges of all of the blades
and sharpen the cutting edges if they are dull
or nicked
(Figure
Note:
Sharpen only the top of the cutting
edge and maintain the original cutting angle
to ensure sharpness
remains balanced if the same amount of metal
is removed from both cutting edges.
Figure 26
1. Sharpen at the original angle.
3. Wear/slot forming
4. Crack
26).
(Figure
26). The blade
Note:
Remove the blades and sharpen them
on a grinder. After sharpening the cutting edges,
install the blade with the anti-scalp cup and
blade bolt; refer to
Cutting-Unit Blade(s) (page
Checking and Correcting
Mismatch of Blades
If a cutting blade cuts lower than the others, correct
them as follows:
1.
Lower the cutting unit onto a level surface,
engage the parking brake, put the traction pedal
in neutral and the PTO lever in the O
shut the engine off, and remove the ignition key.
2.
Ensure that the tire pressure is equal in all the
tires.
3.
Raise the height-of-cut to the 102 mm (4 inches)
position; refer to
(page
12).
4.
Rotate the blades so that the tips line up with
one another.
Note:
The tips of the adjacent blades must be
within 3 mm (1/8 inch) of each other. If the tips
are not within 3 mm (1/8 inch) of each other,
proceed to step
spindle housing and bottom of the cutting unit.
5.
Ensure that the front height-of-cut pins are
g004653
resting properly on the frame cushions. If the
pins are not resting properly, place a shim or
shims under the cushion to raise it for proper
alignment.
6.
Position all 3 blades in the A position
27), and measure from the level surface to the
bottom of the tip end of each blade
and note the measurement.
g000276
22
Removing and Installing the
21).
FF
Adjusting the Height of Cut
10
and add shims between the
(Figure
(Figure
Figure 27
position,
28),
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