Exmark Lazer Z XP Operator's Manual page 41

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5.2.2
For Maximum Deck Flotation, place rollers one hole position lower.
Rollers should maintain 1/4 in. (6.4 mm) minimum clearance to ground. Do
Not adjust rollers to support the deck. Be sure bolt is tightened properly or
loss of anti-scalp roller may result.
ANTI-SCALP ROLLER ADJUSTMENT
Deck Leveling
a) Position mower on a flat surface.
b) Stop engine, wait for all moving parts to stop, and remove key.
c) Check tire pressure of all four (4) tires. If needed, adjust to 13 psi (90 kPa).
d) Set anti-scalp rollers to top holes or remove them completely for this
adjustment.
e) Raise the deck to the 5" height position (also transport position) and take all
force off of the two large deck lift springs by loosening the nuts at the front
of each spring. See Figure 9.
f) For 60" units - Lower the deck to the 1-1/2" height position.
For 72" units – Lower the deck to the 1-1/2" height position. Force the left
rear deck support arm downward about 1/4" to get the deck to rest at the 1-
1/2" height position. Place locking pliers between the rear swivel and
spring stop to hold the deck in this position. See Figure 9.
g) Place a 3/4" thick block of wood under each of the two (2) rear anti- scalp
roller brackets and place one under one of the front center anti-scalp
roller brackets.
h) Loosen the two (2) top chain bolts in slots in the rear deck lift arms. Loosen
jam nuts and back off the socket head adjusting screws on the bottom of the
arms until the chains are just loose. Turn the socket head adjusting screws
in until slack is taken out of each chain. Tighten the jam nuts. Tighten the
chain bolts in the deck lift arms making sure they don't move while
tightening.
i) Loosen the four (4) nuts which secure the front swivels (two per side) until
the front chains are loose and front of deck is supported by the 3/4" block.
Do not loosen the front chain hardware.
j) On left side, adjust front swivel using the locking nut behind the swivel until
the front chain is tight and all slack is removed from linkage. Do not lift front
of deck off 3/4" block. Secure front swivel using locking nut in front of
swivel. Repeat for right side.
k) Recheck that the 3/4" blocks fit just snugly under the brackets and that the
tension on all the chains are approximately equal. Make sure all chain
attachment bolts are tight. Reposition anti-scalp rollers and tighten securely.
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FIGURE 8
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