Exmark Lazer Z XP - Manual (Page 36)

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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 plug
from the engine block. The plug may be accessed from the right side of the unit
and are located as shown in Figure 9. The engine has a socket head bolt for the
drain plug.
FIGURE 9
COOLANT PLUG LOCATION
a) Re-install drain plug and hoses and tighten drain cock.
b) Fill radiator with a 50/50 mix of water and Dex-Cool © coolant, allowing
some room (approximately 1/2” (1.27 cm)) 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.
WARNING
POTENTIAL HAZARD
♦ Engine compartment contains open belt drives and fans.
♦ Rotating components can cause injury
WHAT CAN HAPPEN
♦ Fingers, hands, loose clothing or jewelry can get caught
by the rotating fan and drive shaft.
HOW TO AVOID THE HAZARD
♦ Do not operate machine without the covers in place.
♦ Keep fingers, hands, and clothing clear of rotating
components.
♦ Shut off engine, wait for all moving parts to stop, and
remove the ignition key before performing maintenance.
e) With the cap off the radiator, start the engine. Refer to Section 4.3.3.
f) Operate engine until the engine thermostat opens and coolant is circulating
through the radiator core. As air is purged from the engine block and the
coolant level drops, add additional coolant to the radiator.
g) When the radiator is completely full and no additional coolant can be
added, continue running the engine and install the radiator cap. Make sure
that the cap is completely seated by pressing down firmly while turning until
the cap stops. Once the cap is installed, the engine may be stopped.