Servicing The Cutting Blades - Toro 74237CP Operator's Manual

8. Adjust the lift nuts on both the left and the right
side of the machine to achieve 1/4 to 3/8 inch
(6 to 10 mm) lower in front at A than in the rear at
B (Figure 60).
9. Tighten both swivel jam nuts against the front swivel
to lock the height.
10. Check to make sure there is equal tension on the
chains and adjust again if needed.
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 62).
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 62). 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 62).

Servicing the Cutting Blades

Maintain sharp blades throughout the cutting season
because sharp blades cut cleanly without tearing or
Figure 62
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
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 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.
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
Service Interval: Before each use or daily
1. Inspect the cutting edges (Figure 63).
If the edges are not sharp or have nicks, remove and
sharpen the blades. Refer to Sharpening the Blades.
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