Toro 74978 Operator's Manual page 56

13. To adjust the single point system, loosen the two bolts
at the bottom of the height of cut plate. Refer to
Figure 88.
Figure 88
1. Bolts at the bottom of the height-of-cut plate
14. If the deck is too low, tighten the single point
adjustment bolt by rotating it clockwise. If the deck is
too high, loosen the single point adjustment bolt by
rotating it counterclockwise (Figure 89).
Note: Loosen or tighten the single point adjustment
bolt enough to move the height-of-cut plate mounting
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 89
1. Single point adjustment bolt
15. Tighten the two bolts at the bottom of the height of cut
plate (Figure 88). Torque to 27-33 ft-lb (37-45 N-m).
16. On both sides of the deck, measure from the level
17. Fine-tune the adjustment nut on the front deck lift
18. Measure until all four sides are the correct height.
19. Lower discharge chute.
1
g017029
g017036
56
Note: In most conditions, the back blade tip should
be adjusted 1/4 inch (6.4 mm) higher than the front.
surface to the back tip of the blade (Postion B).
The measurement should read 3 1/4 inches (8.3 cm)
(Figure 86).
assembly by turning it (Figure 87).
To increase the height, turn the adjustment nut
clockwise; to decrease, turn counterclockwise.
Tighten all the jam nuts on the deck lift arm assemblies.