Insufficient Water Flow From Belt Driven Seawater Pickup Pump - Mercury 305 CID Service Manual

Insufficient Water Flow from Belt Driven Seawater Pickup Pump

Drive belt
Seawater shutoff valve partially or fully closed
Clogged or improperly installed sea strainer
Loose hose connections between seawater pickup
and seawater pump inlet
Seawater inlet hose kinked or plugged
Seawater pickup plugged
Obstruction on boat bottom causing water turbu-
lence.
Faulty seawater pump
Index
1C-28 - TROUBLESHOOTING
Cause Special Information
Loose, worn or broken
Pump will suck air, pump may fail to prime or will
force air bubbles into cooling system
Obstruction will be in front of seawater pickup,
causing air bubbles to be forced into cooling
system
90-823225--1 1096