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Maintenance
Mower Leveling
1.
Position mower on a flat surface. Stop the
engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the
spark plug(s).
2.
Check tire pressure of all four (4) tires. If
needed, adjust to 13 psi (90 kPa)
3.
Set anti–scalp rollers to top holes or remove
them completely for this adjustment.
4.
Raise the deck to the transport position and take
all force off of the two large deck lift springs by
loosening nut in front of each spring (Fig. 45).
5.
Place two 1-1/2" (38 mm) thick blocks under
rear left and right lower edge of mower. Place
one 2" (51 mm) block under front center lower
edge
Lower mower to the 1-1/2"
of mower.
(38 mm) height-of-cut position (Fig. 45).
Figure 45
1. Transport position
6.
Loosen four (4) top chain bolts in slots. Check
the length of the rod/swivel assemblies. Distance
from outside of rear swivel to outside of front
swivel should be 20–1/4" (514 mm) (Fig. 46).
Make sure that all four swivels move freely in
holes.
7.
If measurement is not 20–1/4" (514 mm) on each
side, adjust by turning nuts on either side of
front swivels.
50
1
2
m–4164
2. 1-1/2" (38 mm)
height-of-cut
8.
Lift up on four (4) top chain attachment bolts, in
the slots, to take slack out of chains and tighten
flange lock nuts
(Deck is still supported by two
.
rear and one front blocks under mower)
9.
If bolts contact the end of slots, shorten or
lengthen rod/swivel assemblies as required, for
extra clearance, adjust each side same amount.
Note:
When properly adjusted, the front of
the mower will be slightly lower than
the rear.
1
3
Figure 46
1. 20-1/4" (514 mm) between
swivels
2. Top chain bolt
10. Recheck that blocks just fit just under the mower
and that tension on all four chains is
approximately equal. Tighten chain attachment
bolts securely.
11. Install anti–scalp rollers for proper height-of-cut
and tighten securely.
Compression Spring Adjustment
12. Raise deck lift lever to the transport position,
(Fig. 45).
13. Springs are compressed so the distance between
the two large washers should be 11-1/2"
(292 mm) (Fig. 46).
14. Adjust by turning nut in front of each spring
(Fig. 46). (clockwise will shorten spring,
counter–clockwise will lengthen spring)
4
2
m–3747
2
3. Front swivel
4. 11-1/2" (292 mm) spring
compressed
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