Exmark Lazer Z Operator's Manual page 45

NOTE: When changing cutting height positions, always come to a
complete stop and disengage the PTO.
d) Insert height adjustment pin into hole corresponding to desired cutting
height and install hairpin cotter. See decals on the sides of deck lift plate.
e) Move lever out of transport (or 5" (12.7 cm) cutting height) position and
down onto height adjustment pin to mow at selected height.
f) To transport, move lever back up to transport (or 5" (12.7 cm) cutting
height) position.
Note: The foot operated deck lift assist lever can be used to
momentarily lift the deck to clear objects. Be sure that PTO is
disengaged.
g) Adjust anti-scalp rollers for Normal Operating Conditions. Stop engine,
wait for all moving parts to stop, and remove key. Place rollers in one of
the positions shown in Figure 8. Rollers will maintain 3/4 in. (19 mm)
clearance to the ground to minimize gouging and roller wear or damage.
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.
5.2.2 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 in drive tires. Proper inflation pressure for tires is 13 psi
(90 kPa). Adjust if necessary.
For units with Pneumatic Caster tires (with a valve stem): Check tire
pressure in Caster tires. Proper inflation pressure for tires is 13 psi (90 kPa).
For units with Semi-Pneumatic Caster tires (without a valve stem): 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 5" (12.7 cm) 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.
LEVER IN TRANSPORT
AND 5"(12.7 cm)
CUTTING HEIGHT
POSITION
FIGURE 7
CUTTING HEIGHT POSITION
FOR CUTTING HEIGHTS ABOVE
3.5" (38 mm) USE THE BOTTOM
HOLE THE ROLLERS WILL STILL
BE EFFECTIVE AGAINST
SCALPING
TORQUE TO 40-45 ft. lbs. (54-61 N-M)
FIGURE 8
ANTI-SCALP ROLLER ADJUSTMENT
- 40 -
LEVER IN 1 1/2"
(3.81 cm) CUTTING
HEIGHT POSITION
INSERT PIN