Operator's Manual

38
Note: Do not loosen front chain hardware.
7. Loosen front and rear locking nut on either side of
front swivel. Loosen until front chains are loose and
deck is supported by blocks. Repeat for opposite side.
(Fig. 53).
Note: When hardware is loose, deck will rotate the lift
handle up out of position.
8. When hardware is loosened, remaining tension in the
large support springs will tend to rotate the deck lift
handle up, out of the 1-1/2″ position. Press down on
the rear deck support arm to firmly return the deck lift
handle to the 1-1/2″ position (Fig. 53).
Note: Do not push on deck lift handle.
9. While continuing to press down on rear deck support
arm, take the slack out of the rear chain and tighten
hardware at the bottom (Fig. 53). Downward pressure
may now be released. Repeat for opposite side.
10. Adjust front swivel using rear locking nut until the
front chain is tight and front of deck is still touching
block. Tighten front locking nut. Repeat for opposite
side.
1
3
4
5
6
7
2
8
9
m–4116
Figure 53
1. Bottom chain bolt
2. Top chain bolt
3. Front swivel
4. 10-1/4″ (260 mm) spring
compressed
5. Rear locking nut
6. Front locking nut
7. Rear deck support arm
8. Front spring nut
9. Jam nut
11. Recheck that blocks fit just snuggly under the mower
and that tension on all four chains are approximately
equal.
12. Raise deck to 3 inch height of cut and measure actual
height from blade tips to ground. Height of cut for the
front blade tips should be 3.00 ±.125 inches (76 mm
± 3 mm). Height of cut for rear blade tips should be
3.25±.125 inches (83 mm± 3 mm). Readjust if needed.
Note: When checking blade tip heights make sure blades
are not bent and check blade pointing front to rear.
13. Install anti-scalp rollers for proper height-of-cut and
tighten securely. See Adjusting Anti-Scalp Rollers on
page 22.
14. Raise deck lift lever to the transport position (Fig. 52).
15. Adjust compression springs by turning the front spring
nuts so the distance between the two large washers is
10-1/4″ (260 mm). Then tighten jam nut (Fig. 53).
Note: Make sure all hardware is tight.
Adjusting Push Arms
1. To adjust push arms, loosen jam nut and rotate ball
joint counterclockwise, one turn at a time. (Fig. 54).
1. Adjust each side the same amount. Each push arm
should have a nominal length of 15-5/16″ (389mm)
(Fig. 54).
Note: Increase tension by lengthening the push arms and
decrease tension by shortening push arms.
m–3740
1
3
2
1
Figure 54
1. Push arm
2. 15-5/16″ (389 mm)
nominal
3. Jam nut
4. Ball joint
Throttle Lever Adjustment
The tension can be adjusted by adjusting the tightness of
lever pivot bolt. Do this when needed.
1. Stop engine, remove ignition key.
2. Remove console from machine to gain access to
throttle lever.
3. Tighten nut and bolt. Test lever and adjust to desired
tension (Fig. 55).