Mercury MerCruiser MCM 454 Mag MPI Service Manual page 44

SERVICE MANUAL NUMBER 23
When flushing, be certain the area around propeller is clear, and no one is standing
nearby. To avoid possible injury, remove propeller.
Do not run engine above 1500 rpm when flushing. Suction created by seawater pick-
up pump may collapse flushing hose, causing engine to overheat.
Watch temperature gauge on dash to ensure that engine does not overheat.
6. Operate engine at idle speed in neutral for 10 minutes, or until discharge water is clear.
7. Shut off water tap. Remove garden hose and adaptor from pump inlet and reconnect
IMPORTANT: If boat is in the water, do not open water inlet valve until engine is to be
restarted to prevent contaminated water from flowing back into engine. If boat is not
fitted with a valve, leave water inlet hose disconnected and plugged.
Index Index
90-861326--1 MARCH 1999
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Stop engine.
water inlet hose. Be sure to tighten hose clamp securely.
WARNING
CAUTION
CAUTION
MAINTENANCE
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