Section 5 - Maintenance
90-899883154 JANUARY 2008
Page 101
Draining the Seawater System
!
CAUTION
Water can enter the bilge when the drain system is open, damaging the engine or causing
the boat to sink. Remove the boat from the water or close the seacock, disconnect and
plug the seawater inlet hose, and ensure the bilge pump is operational before draining.
Do not operate the engine with the drain system open.
IMPORTANT: Only drain the seawater section of the closed cooling system.
IMPORTANT: The boat must be as level as possible to ensure complete draining of the
cooling system.
Your power package is equipped with a drain system. Refer to
Drain System
Identification
to determine which instructions apply to your power package.
IMPORTANT: The engine must not be operating at any point during the draining procedure.
Drain System Identification
This power package comes with one of several available seawater drain systems. See the
following information to identify the specific drain system on your power package. You are
responsible for identifying your drain system. Mercury MerCruiser is not responsible for
freeze damage.
AIR-ACTUATED SINGLE-POINT DRAIN SYSTEM
b
c
a
8294
a -
Actuator fitting
b -
Green indicators
c -
Manual release valve
