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Important: The curved part of the blade
must be pointing upward toward the inside
of the mower to ensure proper cutting.
2. Install the curved washer (cupped side toward
the blade) and blade bolt (Figure 39). Torque
the blade bolt to 35-65 ft-lb (47-88 N·m).
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. Position the mower on a flat surface.
Disengage the PTO, set the parking brake, stop
the engine, and remove the key. Disconnect
the spark plug wire(s) from the spark plug(s).
2. Check the air pressure of all four tires. If
needed, adjust to the recommended inflation;
refer to Tire Press.
3. Set the height-of-cut at 3 inch (76 mm).
4. Carefully rotate the blade(s) from side to side
(Figure 42). Measure between the outside
cutting edges and the flat surface (Figure 42).
If both measurements are not within 3/16 inch
(4.75 mm), an adjustment is required; refer to
steps 5 and 6.
Figure 42
1. Blades side to side
2. Outside cutting edges
5. Remove the hairpin cotter and washer from
the leveling bracket (Figure 43). To level the
blade(s), reposition the leveling bracket(s) in
a different hole and install the washer and
3. Measure here
hairpin cotter. (Figure 43). A front hole lowers
the blade height and a rear hole raises its
height. Adjust both sides as required.
Figure 43
1. Hairpin cotter and washer
2. Leveling bracket
6. Check the front-to-rear blade slope; refer to
Adjusting the Front-to-Rear Blade Slope.
Adjusting 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. Position the mower on a flat surface.
2. Disengage the PTO and move the control
levers to the neutral locked position and apply
the parking brake.
3. Stop the engine, remove the key, and wait for
all moving parts to stop before leaving the
operating position.
4. Check the air pressure of all four tires. If
needed, adjust to the recommended inflation;
refer to Tire Pressure.
5. Check and adjust the side-to-side blade level
if you have not checked the setting; refer to
Leveling the Mower from Side-to-Side.
6. Measure the length of the rear trunion rod
(Figure 44). If the rod length is not 11-1/2 inch
(29.2 cm), remove the clevis pin and cotter
pin from the end of the rod (Figure 44),
loosen the jam nut, and turn the yoke until the
11-1/2 inch (29.3 cm) dimension is obtained.
31
3. Front hole
4. Rear hole
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