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9. Tighten the jam nut under the rear support arm and
tighten the bolt that secures 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 (Fig. 52).
Figure 52
2. Measure the right blade at the A location (Fig. 52) from
a level surface to the cutting edge of the blade tip
(Fig. 53).
MEASURE FROM
CUTTING EDGE TO
A LEVEL SURFACE
Figure 53
3. Record this measurement.
4. Measure the right blade at the B location (Fig. 52) from
a level surface to the cutting edge of the blade tip
(Fig. 53).
5. Record this measurement.
6. The mower blade should be 1/4 to 3/8 inch
(6 to 10 mm) lower at position A than at position B
(Fig. 52). If it is not correct, go to the following steps.
Note: You must adjust both of the front swivels 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 1/2 inch (13 mm)
(Fig. 54).
8
2
m–7704
m–1078
1. 10-1/4 inch (260 mm)
between the large
washers
2. Front nut
3. Spring jam nut
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 (Fig. 54).
9. Tighten both swivel jam nuts against the front swivel to
lock the height.
m–2539
10. Check to ensure that 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
(Fig. 54).
2. Check the distance between the 2 large washers; it must
be 10-1/4 inches (26 cm) (Fig. 54).
3. Adjust this distance by loosening the spring jam nut and
turning the nut in front of each spring (Fig. 54).
Note: Turning the nut clockwise shortens the spring;
turning the nut counterclockwise lengthens the spring.
4. Lock the nut into position by tightening the spring jam
nut (Fig. 54).
41
1
8
4
6
7
3
Front
Figure 54
4. Front swivel
5. Swivel jam nut
6. Lift nut
7. Front support arm
8. Large washer
5
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