Removing The Blades - Toro 74199 Operator's Manual

dimension exceeds 1/8 inch (3 mm), the blade is bent
and must be replaced. Refer to Removing the Blades,
and Installing the Blades on page 28.
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.
Warning
Contact with sharp blade can cause serious injury.
Wear gloves or wrap sharp edges of the blade
with a rag.
Hold the blade end using a rag or thickly-padded glove.
Remove the blade bolt, flat washer, split lockwasher and
blade from the spindle shaft (Fig. 30).
1
4
Figure 30
1. Sail area of blade
2. Blade
3. Flat washer
2
3
5
m–4318
4. Blade bolt
5. Split lockwasher
28
Sharpening the Blades
Warning
When sharpening blade, pieces of blade could be
thrown and cause serious injury.
Wear proper eye protection when sharpening
blade.
1. Use a file to sharpen the cutting edge at both ends of
the blade (Fig. 31). Maintain the original angle. The
blade retains its balance if the same amount of
material is removed from both cutting edges.
1
Figure 31
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (Fig. 32). 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 (Fig. 30). Repeat this procedure until
the blade is balanced.
1
Figure 32
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Fig. 30).
Important The curved part of the blade must be
pointing upward toward the inside of the mower to ensure
proper cutting.
2. Install the flat washer, lock washer and blade bolt
(Fig. 30). Torque the blade bolt to 85–110 ft-lb
(115–150 N m).
Important
Make sure blade is torqued to 85–110 ft-lb
(115–150 N m).
m–1854
2
m–1855
2. Balancer