16-60 PROPULSION / ENGINE
ICON A5 / MAINTENANCE MANUAL CHANGE C2
FIGURE 16-36
ENGINE COOLANT REPLACEMENT
5. Drain the coolant from the overflow bottle as follows:
a. Cut the cable tie and disconnect the black silicone hose from the bottom nipple on the
overflow bottle. Catch the coolant in a suitable container as it drains from the bottle and
hose.
b. Reattach the black silicone hose to the nipple on the bottom of the overflow bottle and
secure using a TY24MX cable tie.
6. Drain the coolant from the ECS system as follows:
a. Locate the two ECS hoses where they attach to the forward face of the thermostat.(See
Figure 16-36)
b. Loosen the hose clamps and pull both hoses off the thermostat.
c. Turn on the master switch and turn the heater knob so that the heater valve opens.
d. Apply air pressure-not to exceed 12 psi-to the end of the ECS IN hose. Continue until
coolant has been blown from the heater lines and core.
e. Reinstall both hoses and tighten the hose clamps.
f. Turn off the heater control and master switch.
7. Remove the bleed plug on the top-right-aft corner of the radiator with a 3/16 hex wrench (see
Figure 16-36).
8. Fill coolant at the expansion tank until coolant with no bubbles flows from the radiator bleed port.
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