GASOLINE ENGINES BRAVO MODELS
Page 29 of 116
RETURN HOSE CONNECTION
75480
a
Seawater or Closed Cooling System
a-Location For Hot Water Return
Seawater Connections - General Information
SEAWATER PICKUP HOSE
Seawater inlet hose connections must be made with wire reinforced hose of adequate wall
thickness to prevent it from collapsing from pump suction. Be sure to secure hose connec-
tions with hose clamps. Secure hose to prevent contact with any moving parts of the engine.
Select the proper hose from the following chart:
Seawater Pickup Hose Inner Diameter
Gasoline Engines 1-1/4 in. (32 mm)
SEACOCK SIZE
Seacock used must have an internal cross-sectional area equal to or greater than seawater
inlet hose to prevent restricting water flow. Install valve in an area where it will be easily ac-
cessible and supported adequately to prevent hose fatigue. A brass ball or gate valve is re-
quired. Select a proper seacock based on the following chart:
Seacock Size
(Internal Cross-Sectional Area Equal to or Greater Than Size Shown)
Gasoline Engines 1-1/4 in. (32 mm)
SEAWATER STRAINER
Strainer used must be of sufficient size to ensure that an adequate supply of water will be
maintained for cooling the engine. Select a proper seawater strainer based on the following
chart:
Seawater Strainer Minimum Flow Rate
1
Gasoline Engines 30 (114)
1
Amounts listed are in gallons per minute and (liters per minute).
Install seawater strainer in an area where it will be easily accessible for inspection and
cleaning. Strainer should be installed in water inlet hose after the seacock (water inlet valve)
to allow operator to shut off water when cleaning strainer.
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