MAINTENANCE
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 1B-61
4. Remove drain plug from the fuel cooler.
74130
a
a-Drain Plug
5. On All Models Except Horizon: Remove both hoses from seawater pump.
75533
a
b
a-Seawater Inlet Hose
b-Hose To Cooler
6. On Horizon Model: Remove drain plugs from fittings on each seawater pump hose.
75536
a
a-Drain Plugs - One Is Hidden From View
7. Repeatedly clean out drain holes using a stiff piece of wire. Do this until entire system
is drained.
8. Crank engine over slightly with starter motor to purge any water trapped in seawater
pickup pump. DO NOT allow engine to start.
9. After seawater section of cooling system has been drained completely, reconnect all
hoses, reinstall heat exchanger end caps with new gaskets, and reinstall drain plugs.
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