Toro 30257 Operator's Manual page 32

dimension exceeds 1/8 in. (3 mm), the blade is bent
and must be replaced. Refer to Removing the Blades,
and Installing the Blades on page 32.
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.
Replacement blades made by other manufacturers may
result in non-conformance with safety standards.
Hold the blade end using a rag or thickly-padded
1.
glove. Remove the blade bolt, washer, lock washer
and blade from the spindle shaft (Fig. 44).
2
4
6
5
Figure 44
1. Sail Area of Blade
2. Blade
3. Blade spindle
3
1
m–5199
4. Washer
5. Blade Bolt
6. Lock washer
32
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (Fig. 45). Maintain the original angle. The
blade retains its balance if the same amount of
material is removed from both cutting edges.
1
Figure 45
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 46). 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
(Fig. 44).
the sail area only
until the blade is balanced.
1
Figure 46
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft
Important
The sail part of the blade must be pointing
upward, toward the inside of the mower to ensure proper
(Fig. 44).
cutting
2. Install the washer, lock washer and blade bolt
(Fig. 44).
Torque the blade bolt to 85–110 ft-lb
(115–140 N m).
3. Remove spacers from the height–of–cut posts to lower
the mower (Fig. 47).
m–1854
Repeat this procedure
2
m–1855
2. Balancer
(Fig. 44).