Mercury MerCruiser Owner's Manual page 125

Section 5 - Maintenance
20. Insert the dust cover in the flush socket on the engine.
a
b
18490
Dust cover installed in the flush socket
a - Dust cover b - Flush socket
IMPORTANT: If the unit is to be stored in the water, the seacock should remain closed until
time of usage. If unit is to be stored out of the water, open the seacock.
21. Open the seacock, if equipped, or reconnect the alternative water inlet source prior to
operating the engine.
90-899883295 JUNE 2008 Page 117