Ferris Industries IS1000ZKAV21/48 - Manual (Page 31)

Troubleshooting, Adjustment & Service
29 00
DECK LEVELING ADJUSTMENT
1. Park machine on a flat, level surface. Disengage the
PTO, stop the engine and engage the parking brake.
Rear tires must be inflated to 15 psi (103 kPa); front
tires to 25 psi (172 kPa).
2. Place the deck height adjustment pin in the 4" posi-
tion.
3. Place 2 x 4 blocks under each front corner of the
mower deck with the 3-1/2” sides being vertical.
4. Place 2 x 4 blocks under each of the rear edge of the
mower deck near the chains with the 3-1/2” sides
being vertical. Place a 1/4” spacer on top of the rear
2 x 4’s.
5. See Figure 31. Measure the distance between the
lift pivots and the spring rod pivots. Adjust the 5/8”
hex nuts on either side of the front spring rod pivot
until the measurements are equal.
6. See Figure 32. Measure the distance between the
rear lift pivots and the suspension-mounted lift pivots.
Add or remove 5/8” SAE washers from in between
the deck lift rod and the offset link until measure-
ments are equal.
7. Adjust the front U-bolts until the chains are tight and
the deck is still resting on the 2 x 4’s. Tighten jam
nuts. See Figure 33.
8. Loosen the nuts and allow the rear of the deck to
rest on the 2 x 4’s and 1/4” spacers. Slide the chains
down in the slots until the chains are tight and tight-
en the nuts. See Figure 33.
9. Remove all 2 x 4 blocks from under the mower deck.
10. With the deck height adjustments complete and cut-
ting height still set at 4", adjust the deck lift spring to
a compressed length of 12-1/4" (measure spring
only). Adjust the length of the deck lift spring by
tightening or loosening the (2) 5/8” hex nuts that are
closest to the spacer at the front end of the spring
(see Figure 33). After adjustment is made, tighten
these two nuts together. Perform this step to both
springs.
Measure 1st
Add / Remove
5/8" SAE Washers
Measure 2nd
Measure 1st
Adjust Here
Measure 2nd
12-1/4"
Adjust Here
Adjust Here
Adjust Here
Figure 31. Spring Rod Adjustment
Figure 32. Lift Rod Adjustment
Figure 33. Deck Level & Spring Length Adjustment