Servicing The Cutting Blades - Toro 74237 Operator's Manual

Adjusting the Compression Spring
1. Raise the mower lift lever to the transport
position.
2. Check the distance between the two large
washers, it needs to be 11-1/8 inches (28.2 cm)
for 52 inch mower decks and 10-1/2 inches
(26.7 cm) for 60 inch mower decks (Figure 63).
Figure 63
1. 11–1/8 inch (28.2 cm)
between the large washers
for 52 inch mower decks
2. Front nut
3. Spring jam nut
4. Front swivel
5. Swivel jam nut
3. Adjust this distance, by loosening the spring
jam nut and turning the nut in front of each
spring (Figure 63). Turning the nut clockwise
will shorten the spring; counter-clockwise will
lengthen the spring.
4. Lock the nut into position by tightening the
spring jam nut (Figure 63).

Servicing the Cutting Blades

Maintain sharp blades throughout the cutting
season because sharp blades cut cleanly without
tearing or shredding the grass blades. Tearing and
shredding turns grass brown at the edges, which
slows growth and increases the chance of disease.
Check the cutter blades daily for sharpness, and
for any wear or damage. File down any nicks
and sharpen the blades as necessary. If a blade is
6. Lift nut
7. Front support arm
8. Large washer
9. 10-1/2 inch (26.7 cm)
between the large washers
for 60 inch mower decks
damaged or worn, replace it immediately with a
genuine Toro replacement blade. For convenient
sharpening and replacement, you may want to
keep extra blades on hand.
A worn or damaged blade can break, and a
piece of the blade could be thrown into the
operator's or bystander's area, resulting in
serious personal injury or death.
• Inspect the blade periodically for wear
or damage.
• Replace a worn or damaged blade.
Inspect and check the blades every 8 hours.
Before Inspecting or Servicing the
Blades
1. Park the machine on a level surface, disengage
the blade control (PTO), and set the parking
brake.
2. Turn the ignition key to Off and remove the
key.
3. Disconnect the spark plug wire(s) from the
spark plug(s).
Inspecting the Blades
1. Inspect the cutting edges (Figure 64).
If the edges are not sharp or have nicks,
remove and sharpen the blades. Refer to
Sharpening the Blades.
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