Exmark LAZER Z Operator's Manual page 35

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4.1.17 Lubricate seat switch actuator:
4.1.18 Lubricate brake handle pivot:
d) Remove one of the spacer nuts from the
axle assembly in the caster wheel. Note
that thread locking adhesive has been
applied to lock the spacer nuts to the axle.
Remove the axle (with the other spacer nut
still assembled to it) from the wheel
assembly.
e) Pry out seals, and inspect bearings for
wear or damage and replace if necessary.
f) Pack the bearings with a NGLI grade #1
multi-purpose grease.
g) Insert (1) bearing, (1) new seal into the
wheel.
NOTE: Seals (Exmark PN 103-0063) must be replaced.
h) If the axle assembly has had both spacer nuts removed (or broken loose),
apply a thread locking adhesive to (1) spacer nut and thread onto the axle
with the wrench flats facing outward. Do not thread spacer nut all of the way
onto the end of the axle. Leave approximately 1/8" (3 mm) from the outer
surface of the spacer nut to the end of the axle inside the nut.
i) Insert the assembled nut and axle into the wheel on the side of the wheel with
the new seal and bearing.
j) With the open end of the wheel facing up, fill the area inside the wheel around
the axle full of NGLI grade #1 multi-purpose grease.
k) Insert the second bearing and new seal into the wheel.
l) Apply a thread locking adhesive to the 2
with the wrench flats facing outward.
m) Torque the nut to 75-80 in-lbs. (8-9 N-m), loosen, then re-torque to
20-25 in-lbs. (2-3 N-m). Make sure axle does not extend beyond either nut.
n) Re-install the seal guards over the wheel hub and insert wheel into caster
fork. Re-install caster bolt and tighten nut fully.
IMPORTANT: To prevent seal and bearing damage, check the bearing
adjustment often. Spin the caster tire. The tire should not spin freely (more
than 1 or 2 revolutions) or have any side play. If the wheel spins freely,
adjust torque on spacer nut until there is a slight amount of drag. Re-apply
threadlocking adhesive.
Service Interval: 160 hrs.
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Unhook seat latch and tilt seat up.
c) Lubricate switch actuator rod with spray type lubricant or light oil.
Service Interval: 160 hrs.
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Lubricate bronze bushings on brake handle pivot with a spray type lubricant
or light oil.
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nd
spacer nut and thread onto the axle
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FIGURE 4