Toro TimeCutter Z480, Operator'S Manual

Page: 30 / 44

Figure 38
1. Sail area of blade 4. Flat washer, large
2. Blade 5. Blade nut
3. Flat washer, small 6. Spindle shaft
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both
ends of the blade (Figure 39). Maintain the
original angle. The blade retains its balance if
the same amount of material is removed from
both cutting edges.
Figure 39
1. Sharpen at original angle
2. Check the balance of the blade by putting it on
a blade balancer (Figure 40). 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 39). Repeat this procedure until the
blade is balanced.
Figure 40
1. Blade 2. Balancer
Installing the Blades
1. Install the large flat washer and the blade onto
the spindle shaft (Figure 38).
Important:
The curved part of the blade
must be pointing upward toward the inside
of the mower to ensure proper cutting.
2. Install the small flat washer, and the blade nut
(Figure 38). Torque the blade nut to 80-100
ft-lb (108-135 N
⋅
m).
Leveling the Mower from
Side-to-Side
The mower blades must be level from side to side.
Check the side-to-side level any time you install
the mower or when you see an uneven cut on your
lawn.
1. Park the machine on a level surface and
disengage the blade control switch.
2. Move the motion control levers to the brake
position, stop the engine, remove the key, and
wait for all moving parts to stop before leaving
the operating position.
3. Check the air pressure of all four tires. If
needed, adjust to the recommended inflation;
refer to Checking the Tire Pressure in
Drive System Maintenance, page 28.
4. Set the height-of-cut lever to position 4
[4 inch (108 mm)].
5. Carefully rotate the blade(s) side to side
(Figure 41). Measure between the outside
cutting edges and the flat surface (Figure 41).
If both measurements are not within 3/16 inch
(5 mm), an adjustment is required; continue
with this procedure.
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