Adjusting The Blade Brake - Toro 39692 Operator's Manual

Removing the Blades
Replace the blades if you hit a solid object or if the
blades are out of balance or 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 with safety standards.
1. Hold the blade bolt with a wrench.
2. Remove the nut, blade bolt, curved washer, blade,
spacers, and thin washer from the spindle (Figure 41).
Figure 41
1. Blade
2. Blade bolt
3. Curved washer
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends
of the blade (Figure 42). Maintain the original angle.
The blade retains its balance if the same amount of
material is removed from both cutting edges.
4. Spacer
5. Thin washer
6. Nut
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a
blade balancer (Figure 43). 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 43). Repeat this
procedure until the blade is balanced.
1. Blade
Installing the Blades
1. Install the curved washer and then the blade onto
the bolt. Select the proper number of spacer(s) for
the height-of- cut, and slide the bolt into the spindle
(Figure 41).
Important: The curved part of the blade must
point upward toward the inside of the mower to
ensure proper cutting.
2. Install the remaining spacer(s) and secure them with
a thin washer and a nut (Figure 41).
3. Torque the blade bolt to 75-80 ft-lb (101-108 N-m).

Adjusting the Blade Brake

1. Disengage the PTO, turn the ignition key to off, and
remove the key.
2. Wait for all moving parts to stop before leaving the
operating position and then set the parking brakes.
3. If necessary, adjust the spring mounting bolts so that
the blade brake pad rubs against both sides of the
pulley groove (Figure 44).
4. Adjust the nut at the end of the blade brake rod until
there is 1/8-3/16 inch (3 mm -5 mm) between the
nut and spacer (Figure 44).
5. Engage the blades. Ensure the blade brake pad no
longer contacts the pulley groove.
35
Figure 42
Figure 43
2. Balancer