Mercury 4.2 Diesel Operation & Maintenance Manual page 60

NOTE: In the following steps, the hoses may require lowering or bending to allow seawater to drain completely.
6. Disconnect the seawater inlet hose from the connector on the seawater pump hose and drain.
b
2.8
a - Seawater inlet hose
b - Connector
c - Seawater pump hose
7. Repeatedly clean out the drain holes using a stiff piece of wire until the seawater section is completely drained.
8. On models equipped with a seawater strainer:
a. Remove the drain plug and washer if equipped.
b. Remove both hoses from the seawater strainer and drain them completely.
c. Drain and empty the seawater strainer.
d. Connect the hoses and tighten the hose clamps.
e. Install the sealing washer and drain plug, if equipped.
9. After the seawater has completely drained, apply sealant to the threads of the drain plugs or fittings (if equipped). Install
and tighten the drain plugs or fittings.
Tube Ref No.
Perfect Seal
19
10. Connect all hoses. Tighten the hose clamps.
90-8M0113988 DECEMBER 2015
eng
c
a
23480
Typical seawater strainers
Description
b
4.2
Where Used
Drain plug or fitting threads
Section 4 - Maintenance
c
a
23649
37290
Part No.
92-34227Q02
Page 53