Exmark Laser Z XP Operator's Manual page 34

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 right side of the unit
and are located as shown in Figure 6. The 31 HP Daihatsu gas has a hex head
bolt for the drain plug. The 27 HP Daihatsu diesel has a socket head bolt for the
drain plug.
31 HP DAIHATSU GAS
a) Re-install all drain plugs 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.
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, tilt hood closed and put the seat down. Start
the engine. Refer to Section 4.3.2. Return the seat up and hood forward to
the open position.
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.
FIGURE 6
COOLANT PLUG LOCATION
WARNING
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27 HP DAIHATSU DIESEL