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Mercury MerCruiser MCM 454 Mag MPI User Manual

Mercury MerCruiser MCM 454 Mag MPI
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MAINTENANCE
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 1B-25
BOAT IN WATER
1. Raise drive unit to full UP position.
2. Install flushing attachment over water pickup holes in gear housing as shown.
3. Attach a hose between the flushing attachment and a water tap.
72693
a
b
a-Flushing Attachment
b-Hose
4. Lower drive unit to full IN position.
CAUTION
Do not run engine above 1500 rpm when flushing. Suction created by seawater pick-
up pump may collapse flushing hose, causing engine to overheat.
CAUTION
Watch temperature gauge on dash to ensure that engine does not overheat.
5. Partially open water tap (approximately 1/2 maximum capacity). DO NOT use full water
pressure.
6. Place remote control in neutral, idle speed position, and start engine.
7. Operate engine at idle speed in neutral for 10 minutes, then stop engine.
8. Shut off water tap.
9. Raise drive unit to full UP position.
10. Remove hose and flushing attachment.
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Mercury MerCruiser MCM 454 Mag MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser MCM 454 Mag MPI
CategoryEngine
LanguageEnglish

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