Simplicity ZT4000 Series - Manual (Page 37)

35
Regular Maintenance
Figure 38. Check Lift Rod Timing
Figure 41. Hanger Chain Adjustment
Deck Lift Rod Timing And 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 (1,03 bar); front
tires to 40 psi (2,76 bar).
2. To check the lift rod timing, measure and record the
distance between the lift pivots and the rod pivots.
Repeat for other side of unit. See Figure 38.
3. If the measurements are equal, skip to Step 5. If
the measurements are NOT equal (greater than 1/8”
(3,17mm) difference), adjustment is required, continue
with Step 4.
4. Refer to Figure 39. To adjust the lift rod timing, adjust
the 5/8” hex nuts on either side of the front lift pivot
until the measurements are equal. Repeat for other
side.
5. Place the deck height adjustment pin in the 4” (10,2 cm)
position.
6. Refer to Figure 40. Place 2 x 4 blocks under each corner
of the mower deck with the 3-1/2” sides being vertical.
Place a 1/4” (0,64 cm) thick spacer on top of the rear 2
x 4 blocks.
7. Adjust the front eyebolts until the chains are tight and
the deck is still resting on the 2 x 4’s. Tighten jam nuts.
See Figure 41.
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 in the
slots until the chains are tight and tighten the nuts. See
Figure 41.
9. Remove all 2 x 4 blocks and spacers from under the
mower deck.
Figure 39. Adjust Lift Rod Timing
Figure 40. 2 x 4 Locations
A. 1/4” Spacers
A