Exmark Lazer Z Operator's Manual page 41

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5.1.25
5.1.26
5.1.27
IMPORTANT: The fuel system for Kohler 26 HP EFI units must be purged of all
air prior to start up if the engine has been allowed to run out of gas or the system
has been disassembled.
To purge the air out of the fuel system:
a) Connect the black hose to the test valve in the fuel rail and route the clear
tube into a portable gasoline container.
b) Depress and hold the release button and crank the engine in 10-15 second
intervals, allowing a 60 second cool-down period between intervals, until air
is purged and fuel is visible in the discharge tube.
NOTE: If you do not have the pressure gauge, you can crank the engine in 10-
15 second intervals, allowing a 60 second cool-down period between cranking
intervals, until the engine starts.
Change hydraulic system filter:
Service Interval: After First 250 hrs.
NOTE: Use only Exmark Part No. 513211 for summer use above 32° F or
Part No. 523541 for winter use below 32° F.
a) Stop engine and remove key.
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 5.1.11.
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.
Inspect electric clutch gap:
Service Interval: 250 hrs.
Refer to Section 5.2.12 for inspection and adjustment procedures.
Wheel hub - slotted nut torque specification.
Service Interval: 500 hrs
When tightening the slotted nut on the wheel motor tapered shaft:
a) Torque the slotted nut to 125 ft. lbs.
b) Check distance from bottom of slot in nut to inside edge of hole. Two
threads (0.1") or less should be showing.
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Then yearly thereafter
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