Toro 74421TE Operator's Manual page 48

1. Rear chain
2. Rear support arm
3. Bolt
4. Jam Nut
Adjusting the Front-to-Rear Mower
Pitch
1. Position the right blade front-to-rear (Figure 61).
2. Measure the right blade at the A location, from a
level surface to the cutting edge of the blade tip
(Figure 61).
1. Measure here from blade
to hard surface
3. Record this measurement.
4. Measure the right blade at the B location, from a
level surface to the cutting edge of the blade tip
(Figure 61).
5. Record this measurement.
Figure 60
5. Adjustment bolt
6. Front swivel
7. Front support arm
Figure 61
2. Measure at A and B
6. The mower blade should be a 1/4 to 3/8 inch
(6 to 10 mm) lower at position A than at position
B (Figure 61). If it is not correct, proceed to the
following steps.
Note: Both of the front swivels need to be adjusted
the same amount to maintain equal chain tension.
7. Loosen the front swivel jam nuts, at the front of
the right and left swivels, approximately a 1/2 inch
(13 mm) (Figure 60).
8. Adjust the lift nuts on both the left and the right
side of the machine to achieve 1/4 to 3/8 inch
(6 to 10 mm) lower in front at A than in the rear at
B (Figure 60).
9. Tighten both swivel jam nuts against the front swivel
to lock the height.
10. Check to make sure there is equal tension on the
chains and adjust again if needed.
Adjusting the Compression Spring
1. Raise the mower lift lever to the transport position.
2. Check the distance between the two large washers,
it needs to be 11-1/8 inches (28.2 cm) for 52 inch
mower decks and 10-1/2 inches (26.7 cm) for 60
inch mower decks (Figure 62).
3. Adjust this distance, by loosening the spring jam
nut and turning the nut in front of each spring
(Figure 62).
Note: Turning the nut clockwise will shorten the
spring; counter-clockwise will lengthen the spring.
4. Lock the nut into position by tightening the spring
jam nut (Figure 62).
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