Toro 44409 Operator's Manual page 48

WARNING
A blade that is bent or damaged could
break apart and could critically injure
you or bystanders.
• Always replace a bent or damaged
blade with a new blade.
• Do not file or create sharp notches in
the edges or surfaces of the blade.
Removing the Blades
Replace the blade if a blade hits a solid object, is out
of balance, or is bent. For best 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 end using a rag or thickly padded
glove.
2. Remove the blade bolt, curved washer, and
blade from the spindle shaft
Figure 69
1. Sail area of the blade
2. Blade
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both
ends of the blade
Note:
Maintain the original angle.
Note:
The blade retains its balance if the same
amount of material is removed from both cutting
edges.
(Figure 69).
3. Curved washer
4. Blade bolt
(Figure 70).
1. Sharpen at original angle.
2. Check the balance of the blade by putting it on a
blade balancer
Note:
If the blade stays in a horizontal position,
the blade is balanced and can be used.
Note:
If the blade is not balanced, file some
metal off the end of the sail area only
1. Blade
3. Repeat this procedure until the blade is
balanced.
Installing the Blades
Service Interval: Yearly
1. Inspect the blade bolt for damaged threads.
Replace the bolt and curved washer as
necessary.
2. Install the blade onto the spindle shaft
72).
Important:
must be pointing upward toward the inside
of the deck to ensure proper cutting.
3. Install the curved washer and blade bolt
g010341
72).
Note:
The curved washer cone must be
installed toward the bolt head
4. Torque the blade bolt to 115 to 150 N∙m (85 to
110 ft-lb).
48
Figure 70
(Figure 71).
Figure 71
2. Balancer
The curved part of the blade
(Figure
g000552
(Figure 70).
g000553
(Figure
(Figure
72).