Service manual

CLOSED COOLED MODELS SERVICE MANUAL NUMBER 26
Page 6B-22 90-861329--1 MARCH 1999
4. After engine has reached normal operating temperature (thermostat is fully open), and
coolant level remains constant, fill heat exchanger to bottom of filler neck.
5. Observe engine temperature gauge to make sure that engine operating temperature is
normal. If gauge indicates excessive temperature, stop engine immediately and
examine for cause.
6. Install pressure cap on heat exchanger.
7. Remove cap from coolant recovery reservoir and fill to FULL mark with coolant solution.
Reinstall cap.
8. With engine still running, check hose connection, fittings and gaskets for leaks.
IMPORTANT: Engine overheating is often due to air being trapped in closed cooling
section. Purge air by running engine at 2000 rpm for 10 minutes.
WARNING
Allow engine to cool before removing pressure cap. Sudden loss of pressure could
cause hot coolant to boil and discharge violently. After engine has cooled, turn cap
1/4 turn to allow any pressure to escape slowly, then push down and turn cap all the
way off.
9. Recheck coolant level after first open-throttle boat test and add coolant, if necessary.
10. Maintain coolant level in coolant recovery reservoir between ADD and FULL marks with
engine at normal operating temperature.
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