Toro 74271 Operator's Manual page 50

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 66).
Figure 66
1. Rear chain
2. Rear support arm
3. Bolt
4. Jam Nut
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 66).
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.
Adjusting the Front-to-Rear Mower
Pitch
1. Position the right blade front-to-rear
(Figure 67).
5. Adjustment bolt
6. Front swivel
7. Front support arm
Figure 67
1. Measure here from blade
to hard surface
2. Measure the right blade at the A location, from
a level surface to the cutting edge of the blade
tip (Figure 67).
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 67).
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 67). 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 66).
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 66).
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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2. Measure at A and B