Toro Z580-D, Operator'S Manual, Page: 56 / 68

Figure 77
1. Measure here from blade
to hard surface 2. Measure at B and C
7. If the measurements at positions B or C are not
correct, loosen the bolt attaching the rear chain to
the rear support arm (Figure 78).
8. Loosen the jam nut under the rear support arm and
adjust the adjustment bolt to get a measurement of
3-1/8 to 3-1/4 inches (Figure 78).
Note:
It is recommended that both sides of the
mower are adjusted the same distance.
9. Tighten the jam nut under the rear support arm
and tighten the bolt securing the chain to the rear
support arm.
10. Adjust the opposite side if needed.
Figure 78
1. Rear chain 5. Adjustment bolt
2. Rear support arm 6. Front swivel
3. Bolt 7. Front support arm
4. Jam Nut
Adjusting the Front-to-Rear Mower
Pitch
1. Position the right blade front-to-rear (Figure 79).
2. Measure the right blade at the A location, from a
level surface to the cutting edge of the blade tip
(Figure 79).
Figure 79
1. Measure here from blade
to hard surface 2. Measure at A and B
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 79).
5. Record this measurement.
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 79). 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 78).
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 78).
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.
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