Exmark Laser Z XP Operator's Manual page 38

For 31 HP Daihatsu Gas units: A fuel filter is installed between the fuel tank
and the fuel pump and is located under the seat in the left hand front corner of
engine deck.
a) Close fuel shut off valve and replace filter.
For 27 HP Daihatsu Diesel units: A fuel filter is installed between the fuel tank
and the injector pump and is located under the seat in the left hand front corner
of engine deck.
a) Close fuel shut off valve.
b) Disconnect the sensor wire, remove the drain plug and discard the o-ring.
c) Remove fuel filter with a filter wrench.
d) Screw new filter on by hand until gasket contact the housing, then tighten
1/3 turn more.
e) Install the drain plug with new O-ring and connect the sensor wire.
f) Bleed air from fuel line, by using the priming pump, (See section 5.1.24)
then start the engine to check for leaks.
Replacement Components
31 HP Daihatsu Gas Fuel Filter
27 HP Daihatsu Diesel Fuel Filter
27 HP Daihatsu Diesel Drain Plug O-ring
5.1.24 Fuel priming procedure (27 HP Daihatsu Diesel Units Only):
The primer pump is the gold button located under the seat next to the console in
the front left-hand corner.
a) Push down on the primer pump until the tension becomes firm
(approximately 10-15 pushes).
5.1.25 Change hydraulic system filter:
NOTE: Use only Exmark Part No. P/N 103-2146.
a) Stop engine, wait for all moving parts to stop, 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 5.1.12.
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.
Service Interval: As required
Service Interval: After First 250 hrs.
Then yearly thereafter
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Briggs & Stratton P/N 498688
Briggs & Stratton P/N 820311
Briggs & Stratton P/N 820348