Exmark LAZER Z Operator's Manual page 38

For Exmark Mower Parts Call 606-678-9623 or 606-561-4983
4.1.25 Change hydraulic system filter:
4.1.26 Wheel hub - slotted nut torque specification.
A Kohler pressure gauge with an integral relief valve (Kohler Part No. 2445504)
is recommended for relieving pressure and purging air in the fuel system.
To relieve the system of pressure:
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Allow the engine to cool completely.
c) Connect the black tester hose from the Kohler pressure gauge to the test
valve in the fuel rail.
d) Route the clear hose into a portable gasoline container and depress the
button on the tester relief valve.
Service Interval: After First 250 hrs.
NOTE: Use only Exmark Part No. 109-4180 for summer use above 32° F (0°C)
or Part No. 1-523541 for winter use below 32° F (0°C).
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Raise seat.
c) Carefully clean area around filter. It is important that no dirt or
contamination enter hydraulic system.
d) Unscrew filter to remove and allow oil to drain from reservoir.
IMPORTANT: Before reinstalling new filter, fill it with Mobil 1 15W-50 and
apply a thin coat of oil on the surface of the rubber seal.
Turn filter clockwise until rubber seal contacts the filter adapter, then
tighten the filter an additional 2/3 to 3/4 turn.
e) Fill reservoir as stated in Section 4.1.12.
f) Raise the rear of machine up and support with jack stands (or equivalent
support) just high enough to allow drive wheels to turn freely.
g) Start engine and move throttle control ahead to full throttle position. Move
the speed control levers to the full speed and run for several minutes. Shut
down machine and recheck oil level.
Do not change hydraulic system oil (except for what can be drained when
changing filter), unless it is felt the oil has been contaminated or been
extremely hot.
Changing oil unnecessarily could damage hydraulic system by
introducing contaminates into the system.
Service Interval: 500 hrs
When tightening the slotted nut on the wheel motor tapered shaft:
a) Torque the slotted nut to 125 ft. lbs (169 N-M).
b) Check distance from bottom of slot in nut to inside edge of hole. Two
threads (0.1") or less should be showing.
c) If more than two threads (0.1") are showing remove nut and install washer
(PN 1-523157) between hub and nut.
d) Torque the slotted nut to 125 ft. lbs (169 N-M).
e) Then tighten nut until the next set of slots line up with the cross hole in
shaft.
f) Replace cotter pin.
NOTE: Do not use antiseize on wheel hub.
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Then yearly thereafter
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