GASOLINE STERNDRIVE INSTALLATION MANUAL
90-860172011 Page 119 of 137
V6 And V8 Seawater (Raw-Water) Cooled Models
CAUTION
If boat is to remain in water after draining, seawater inlet hose must be removed and
plugged to prevent a siphoning action that may occur, allowing seawater to flow
from the drain holes or removed hoses.
IMPORTANT: Boat must be as level as possible to ensure complete draining of cool-
ing system.
CAUTION
Seawater section of cooling system MUST BE COMPLETELY drained for winter
storage, or immediately after cold weather use, if the possibility of freezing temper-
atures exists. Failure to comply may result in trapped water causing freeze and/or
corrosion damage to engine. Damage caused by freezing IS NOT
covered by the
Mercury MerCruiser Limited Warranty.
1. Ensure engine is as level as possible to ensure complete draining of cooling system.
2. Remove drain plugs from the following locations, if equipped:
a. Port and starboard side of cylinder block.
b. Bottom of exhaust manifold(s).
c. Starboard side Y-fitting.
d. Fuel cooler.
75432
75081
d
a
b
c
a-Cylinder Block Drain Plugs
b-Exhaust Manifold Drain Plugs
c-Y-Fitting Drain Plug
d-Fuel Cooler Drain Plug
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