MerCruiser 305 CID (5.0L) Service Manual page 744

SERVICE MANUAL NUMBER 24
Auxiliary Hot Water Heater Installation
IMPORTANT: When connecting a cabin heater or hot water heater, certain require-
ments must be met:
•
Supply hose (from engine to heater) and return hose (from heater to engine)
MUST NOT EXCEED 5/8 in. (16 mm) I.D. (inside diameter).
•
Make heater connections ONLY at locations described in the following instruc-
tions.
•
Check complete system for leaks after heater is connected into cooling sys-
tem.
•
Check for overheating condition (of engine) after heater is connected.
Supply Hose Connection - If Location is Available
Supply Hose Alternate Location
Return Hose Connection
Index
90-861327--1 OCTOBER 1999
a - Location for Hot Water Supply
b
a - Thermostat Housing
b - Hose Connector
a - Location For Hot Water Return
SEAWATER COOLED MODELS
a
a
a
74973
71758
75480
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