Servicing The Cutting Blades - Toro 74933 Operator's Manual

bolts at least 1/3 the length of the available travel
in their slots. This will regain some up and down
adjustment on each of the four deck links.
Figure 91
1. Single-point-adjustment bolt
14. Tighten the two bolts at the bottom of the height of
cut plate (Figure 90).
Note: In most conditions, the back blade tip should
be adjusted 6.4 mm (1/4 inch) higher than the front.
15. Torque the bolts to 37 to 45 N∙m (27 to 33 ft-lb).
16. On both sides of the deck, measure from the level
surface to the back tip of the blade (Postion B). The
measurement should read 83 mm (3-1/4 inches)
(Figure 88).
17. Fine tune the screw adjuster by turning it to get 83 mm
(3-1/4 inches) height
To increase the height, turn the adjustment nut
clockwise; to decrease, turn counterclockwise.
18. Measure until all four sides are the correct height.
Tighten all the nuts on the deck-lift-arm assemblies.
19. Lower discharge chute.

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 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.
g017036
(Figure 89).
DANGER
A worn or damaged blade can break, and a piece
of the blade could be thrown at you or bystanders,
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
Park the machine on a level surface, disengage the
blade-control switch (PTO), and set the parking brake. Turn
the ignition key to O
FF
Inspecting the Blades
Service Interval: Before each use or daily
1. Inspect the cutting edges
are not sharp or have nicks, remove and sharpen the
blades. Refer to
2. Inspect the blades, especially the curved area
92). If you notice any damage, wear, or a slot forming
in this area (Figure
1. Cutting edge
2. Curved area
60
. Remove the key.
(Figure 92). If the edges
Sharpening the Blades (page
92), immediately install a new blade.
Figure 92
3. Wear/slot Forming
4. Crack
61).
(Figure