Mercury D4.2L D-Tronic

SEAWATER COOLING SYSTEM
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 6A-25
Installation
1. Install O-ring on pump housing shoulder.
70628
a
Typical Pump
a-O-ring
2. Turn pump shaft in direction shown to align pump keyway with camshaft key.
70442
b
70628
a
Typical Pump and Camshaft End
a-Pump Keyway
b-Camshaft Key