Marinediesel 5L V8, Owner'S Manual, Page: 199 / 248

Owners Manual 197 Section 6 - Engine
General Information
Marinediesel engines are closed (fresh water) cooled. Closed cooled engines have the
engine block and select other components cooled by a mixture of water and antifreeze.
Cooling system components must be constructed and sized appropriately to supply the
engine with sufficient water under all operating conditions. Observe the following
information.
Seawater Supply and Hose Connections
Specifications
Seawater Supply Specifications
Seawater Pickup (through the hull or transom) -
Minimum Flow Rate
30 gallons per minute (114
liters per minute)
Seawater Pickup Hose (Wire Reinforced) Inner
Diameter
1-1/4 in. (32 mm)
Seacock Size (Internal Cross-Sectional Area Equal to or
Greater Than Size Shown)
1-1/4 in. (32 mm)
Seawater Strainer Minimum Flow Rate 30 gallons per
minute
(114 liters per minute)
Important – Engine Installed Flush System
Sterndrive engines must have the flush system installed with the Y-fitting
located on the outlet side of the sea water pump. The system should be
used only when the engine is NOT running.
Inboard engines MUST have the Y-fitting located on the inlet side of the sea
water pump, and used in conjunction with a manual water shut off valve. In
the inboard configuration the flush is used only with the engine running, to
ensure water lift mufflers do not overfill and enter the engine exhaust
system. Resulting damage will NOT be covered under warranty