Exmark Lazer Z Operator's Manual page 28

e) Replace the oil filter every other oil change. Clean around oil filter and
unscrew filter to remove. Before reinstalling new filter, apply a thin coating of
oil on the surface of the rubber seal. Turn filter clockwise until rubber seal
contacts the filter adapter then tighten filter an additional 2/3 to 3/4 turn.
f) Clean around oil fill cap and remove cap. Fill to specified capacity and replace
cap. Use oil recommended in engine owner's manual. DO NOT overfill.
g) Start the engine and check for leaks.
5.1.10 Change engine coolant:
a) Stop engine and remove key. Machine must be
positioned on level surface.
b) Tilt seat up and tilt hood forward to gain access to the cooling
area.
Allow engine to cool completely before
removing radiator cap or servicing any
component of the cooling system. Spray or
steam from hot, pressurized liquid in the engine
cooling system may cause severe burns.
Engine coolants are toxic if ingested. Flush
spills with large amounts of water to dilute and
remove. Keep out of reach of children and
pets.
b) Drain coolant when engine is cool. Coolant may be drained from the
radiator by loosening the drain cock in the right rear corner. The engine
block may be drained by removing the rear radiator hose and/or by
removing the drain plugs from the engine block. The plugs may be
accessed from the back of the engine and are located in either cylinder
wall adjacent to the main engine block. The plugs may be distinguished
as hex head bolts with a black finish. See Figure 5.
c) Re-install all drain plugs and hoses and tighten drain cock.
d) Fill radiator with a 50/50 mix of ethylene glycol and water, allowing some
room (approximately 1/2") for expansion. Add 50/50 coolant mix to
overflow bottle on the left side of the engine as required to bring the level
up to the indicator line on the bottle.
Service Interval: 500 hours
WARNING
CAUTION
FIG. 5
COOLANT PLUG LOCATION
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