Flushing Cooling System - Mercury V-6 series User Manual

CA83

Flushing Cooling System

When flushing, be certain the area around propeller is clear,
and no one is standing nearby. To avoid possible injury, re-
move propeller.
Do not run engine above 1500 RPM when flushing. Suction
created by seawater pickup pump may collapse flushing
hose, causing engine and/or drive unit to overheat.
Watch temperature gauge on dash to ensure that engine does
not overheat.
To prevent silt and/or salt buildup in cooling system, flush with
freshwater at specified intervals.
CB672
If flushing cooling system with boat in water, raise drive unit to
TRAILER position, install flushing attachment and lower drive unit to
full DOWN/IN position.
1
Install Quicksilver flushing attachment (or equivalent) over water
intake openings in gear housing.
2
Connect hose between flushing attachment and water tap.
3
With drive unit in normal operating position, partially open water
tap (about 1/2 maximum). Place remote control in NEUTRAL, idle
speed position and start engine. Operate engine at idle speed, in
NEUTRAL, for about 10 minutes or until discharge water is clear.
Stop engine, shut off water and remove flushing attachment.
WARNING
CAUTION
CAUTION
79