GASOLINE STERNDRIVE INSTALLATION MANUAL
90-860172011 Page 123 of 137
IMPORTANT: Do not use Propylene Glycol Antifreeze in the closed cooling section
of the engine.
1. Ensure engine is as level as possible to ensure complete draining of cooling system.
2. Remove drain plug(s) from bottom of exhaust manifold(s).
3. Remove drain plug from fuel cooler.
75039
a
b
a-Fuel Cooler Drain Plug
b-Exhaust Manifold Drain Plug(s)
4. Remove end caps, sealing washers and gaskets from heat exchangers.
71515
a
b
c
d
a-Heat Exchanger
b-Gaskets
c-Sealing Washer
d-End Cap
5. Repeatedly clean out drain holes using a stiff piece of wire. Do this until entire system
is drained.
6. On models with seawater pickup pump, loosen clamps and remove both hoses.
71170
a
a-Seawater Pickup Pump Hoses
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