Exmark Lazer Z XS - Manual (Page 34)

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b) Remove front carburetor cover from engine and clean around the intake
manifold and carburetor.
c) Reinstall the carburetor cover
4.1.20 Check spark plugs:
Service Interval: 160 hrs.
a) Remove spark plugs, check condition and reset gaps, or replace with new
plugs. See Engine Owners Manual.
4.1.21 Change fuel filter:
Service Interval: As Required
a) A fuel filter is installed between the fuel tanks and the engine. Replace
when necessary.
Replacement Filters
Briggs and Strattton
Briggs P/N 695327
4.1.22 Change hydraulic system filter:
Service Interval: After First 250 hrs.
Then yearly thereafter
NOTE: Use only Exmark Part No. 103-2146.
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 4.1.11
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 to full throttle position. Move the
speed control levers to the full forward position and run for several minutes.
Shut down machine and recheck oil level.
Do not change hydraulic system oil more frequently than recommended
(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.
4.1.23 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 (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).