Toro 74390 Operator's Manual page 38

6. Move to the left side of the machine. Loosen, but do
not remove, the rear locking nut on the hanger bracket
().
7. Loosen the side locking nut on the hanger bracket just
enough to allow the eccentric plate to be adjusted ().
Use a 3/8 inch drive extension on a socket wrench
to manipulate the eccentric plate. Use the wrench to
reposition the height of the mower deck and adjust it so
the measurements taken in Step are with in 3/16 inch
(5 mm).
8. Stop the deck at the adjusted position and tighten the
side locking nut on the hanger bracket to hold the new
position (). Tighten the rear locking nut on the hanger
bracket.
9. Continue leveling the deck by checking the front-to-rear
blade slope; refer to Adjusting the Front-to-Rear Blade
Slope.
3 3
6
1. Hanger bracket
2. Rear locking nut
3. Side locking nut
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. Park the machine on a level surface and disengage the
blade control switch.
4
1
2
5
G005074
Figure 53
4. Eccentric adjustment plate
5. Socket wrench hole
6. Socket wrench with 3/8
inch extension
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. Set the height-of-cut lever to middle position.
Note: Check and adjust the side-to-side blade level. If
you have not checked the setting; refer to Side-to-Side
Leveling.
4. Carefully rotate the blades so they are facing front to
rear ().
2
1. Blades front to rear
2. Measure from the tip of the blade to the flat surface here
5. Measure from the tip of the front blade to the flat
surface and the tip of the rear blade to the flat surface
(). If the front blade tip is not 1/16-5/16 inch
(1.6-7.9 mm) lower than the rear blade tip, adjust the
front locknut.
6. To adjust the front-to-rear blade slope, rotate the
adjustment nut in the front of the mower ().
1
1. Adjusting rod
2. Adjusting block
38
1
G009658
2
Figure 54
3
2
G014634
Figure 55
3. Lock nut