MAINTENANCE
76
Flushing the Cooling System
Flush the internal water passages of the outboard with fresh water
after each use in salt, polluted, or muddy water. This will help
prevent a buildup of deposits from clogging the internal water
passages.
Use a Mercury Precision or Quicksilver accessory (or equivalent)
flushing attachment.
IMPORTANT: The engine must be run during flushing in order to
open the thermostat and circulate water through the water
passages.
!
WARNING
Rotating propellers can cause serious injury or death. Never
operate the boat out of the water with a propeller installed. Before
installing or removing a propeller, place the drive unit in neutral
and engage the lanyard stop switch to prevent the engine from
starting.
1. Remove propeller. Refer to Propeller Replacement. Install the
flushing attachment so the rubber cups fit tightly over the
cooling water intake.
Attaches to the water intakes;
provides a fresh water
connection when flushing the
cooling system or operating the
engine.
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