Toro 74291 Operator's Manual page 44

1. Measure here from blade
to hard surface
2. Measure the right blade at the B location, from a
level surface to the cutting edge of the blade tip
(Figure 58).
3. Record this measurement. This measurement needs
to be 3-1/8 to 3-1/4 inches.
4. Position the left blade side-to-side (Figure 58).
5. Measure the left blade at the C location (Figure 58),
from a level surface to the cutting edge of the blade
tip.
6. Record this measurement. This measurement needs
to be 3-1/8 to 3-1/4 inches (80 to 83 mm).
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 59).
1. Rear chain
2. Rear support arm
3. Bolt
4. Jam Nut
Figure 58
2. Measure at B and C
Figure 59
5. Adjustment bolt
6. Front swivel
7. Front support arm
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 (80 to 83 mm) (Figure 59).
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 60).
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 60).
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 60).
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 60). 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 59).
44
Figure 60
2. Measure at A and B