Exmark Lazer Z HP Operator's Manual page 36

installed with the spring disc washer between head of the bolt and
mounting bracket.
Torque hardware as specified, or loss of roller may result.
Torque the 3/8 nyloc nut to 30-35 ft-lbs. (41-47 N-m).
Torque the 3/8-24x2 Gr 8 hex capscrew to 50-55 ft-lbs (68-75 N-m)
4.2.2 Deck Leveling:
a) Position mower on a flat surface.
b) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
c) Check tire pressure in drive tires. Proper inflation pressure for tires is 13 psi
(90 kPa). Adjust if necessary.
Semi-Pneumatic caster tires do not need to be inflated.
d) Set anti-scalp rollers to top holes or remove them completely for this
adjustment.
e) Raise the deck to the 4.5" (11.4 cm) height position and take as much force
as possible off of the two large deck lift springs by loosening the nuts at the
front of each spring. See Figure 7.
f) Lower the deck to the 1-1/2" (3.8 cm) height position. Place two 1-5/16"
(3.3 cm) thick blocks under the rear edge of the cutting deck skirt; one on
each side of the cutting deck. Place a 1-1/8" (2.9 cm) block under the
center front edge, but not under the anti-scalp roller brackets.
g) 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 when pressure is applied
to force rear deck support arms down. See Figure 7. Continue to press
down on rear deck support arms and 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 do not move while
tightening.
h) Loosen four (4) nuts which secure front swivels (two per side), until front
chains are loose and front of deck is supported by the 1-1/8" (2.9 cm) block.
Do not loosen front chain hardware.
i) 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 1-1/8" (2.9 cm) block. Secure front swivel using locking
nut in front of swivel. Repeat for right side.
FIGURE 6
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