Mower Deck Leveling - Toro 74840 Operator's Manual

Figure 60
1. Blade
Installing the Blades
1. Install the blade onto the spindle shaft (Figure 58).
Important: The curved part of the blade must
be pointing upward toward the inside of the
mower to ensure proper cutting.
2. Install the spring disk and blade bolt. The spring
disk cone must be installed toward the bolt head
(Figure 58). Torque the blade bolt to 35-65 ft-lb
(47-88 N-m).

Mower Deck Leveling

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.
Checking Side-to-Side Level
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
neutral lock position, stop the engine, remove the
key, set the parking brake and wait for all moving
parts to stop before leaving the operating position.
3. Carefully rotate the blades side to side.
4. Measure between the outside cutting edges and
the flat surface (Figure 61). If both measurements
2. Balancer
are not within 3/16 inch (5 mm), an adjustment is
required; continue to the Leveling procedure.
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3
4
1. Blades side to side
2. Outside cutting edges
Checking the Front-to-Rear Blade Slope
Check the front-to-rear blade level any time you install
the mower. If the front of the mower is more than
5/16 inch (7.9 mm) lower than the rear of the mower,
adjust the blade level using the following instructions:
1. Park the machine on a level surface and disengage
the blade control switch.
2. Move the motion control levers outward to the
neutral position, engage the parking brake, stop the
engine, remove the key, and wait for all moving parts
to stop before leaving the operating position.
3. Carefully rotate the blades so they are facing front
to rear (Figure 62).
4. Measure from the tip of the front blade to the flat
surface and the tip of the rear blade to the flat surface
(Figure 62). If the front blade tip is not 1/16-5/16
inch (1.6-7.9 mm) lower than the rear blade tip,
continue to the Leveling the Mower Deck procedure.
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1
Figure 61
3. Sail area of blade
4. Measure from the tip of the
blade to the flat surface
here
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2
4