Leveling The Mower Deck - Toro 74390 Operator's Manual

1. Sail area of blade
2. Blade
3. Curved washer
Sharpening the Blades
1. Use a file to sharpen the cutting edge at both ends of
the blade (). Maintain the original angle. The blade
retains its balance if the same amount of material is
removed from both cutting edges.
1. Sharpen at original angle
2. Check the balance of the blade by putting it on a blade
balancer (). 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 (). Repeat this procedure until the blade is
balanced.
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft ().
Important: The curved part of the blade must be
pointing upward toward the inside of the mower to
ensure proper cutting.
2. Install the blade stiffener, the curved washer (cupped
side toward the blade) and the blade bolt ().
3. Torque the blade bolt to 35-65 ft-lb (47-88 N-m).
Figure 49
4. Blade bolt
5. Blade stiffener
Figure 50
Figure 51
2. Balancer

Leveling the Mower Deck

Check to ensure the mower deck is level any time you install
the mower or when you see an uneven cut on your lawn.
The mower deck must be checked for bent blades prior to
leveling; any bent blades must be removed and replaced. Refer
to the Checking for Bent Blades procedure before continuing.
The mower deck must be leveled side-to-side first then the
front to rear slope can be adjusted.
Requirements:
•
The machine must be on a level surface.
•
All four tire must be properly inflated. Refer to Checking
the Tire Pressure in the Drive System Maintenance
section.
Leveling the Mower from Side-to-Side
The mower blades must be level from side to side. Check the
side-to-side level any time you install the mower or when you
see an uneven cut on your lawn.
1. Park the machine on a level surface and disengage the
blade control switch.
2. Move the motion control levers outward to the park
position, stop the engine, remove the key, and wait for
all moving parts to stop before leaving the operating
position.
3. Check the air pressure of all four tires. If needed, adjust
to the recommended inflation; refer to Checking the
Tire Pressure in the Drive System Maintenance section.
4. Set the height-of-cut lever to the 3 inch (76 mm)
position.
5. Carefully rotate the blade(s) side to side (). Measure
between the outside cutting edges and the flat surface
(). If both measurements are not within 3/16 inch
(5 mm), an adjustment is required; continue with this
procedure.
2
3
4
1. Blades side to side
2. Sail area of blade
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1
G009682
2
4
Figure 52
3. Outside cutting edges
4. Measure here
3