SEAWATER COOLED MODELS
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 6A-11
1. Remove water hose, which runs between pump outlet and engine, and replace with
another hose of same diameter, but approximately 3 ft (1 m) longer. Hose should be wire
reinforced or of adequate wall thickness to prevent it from kinking when performing test.
Clamp hose at pump outlet only. Do not clamp hose at engine end.
75533
a
b
a-Seawater Inlet Hose
b-Hose To Cooler
2. Place an 8 qt. (7.6 L) or larger container near unclamped end of hose.
3. With assistance of another person, start engine and adjust speed to exactly 1000 RPM
while holding unclamped end of hose on connection on engine. Remove hose from con-
nection on engine and direct water flow into container for exactly 15 seconds. At the end
of 15 seconds, direct the water flow overboard, return engine to idle and stop engine.
Reconnect hose to engine.
4. Measure quantity of water discharged into container and compare with specifications
given in the following chart.
5. Repeat test four times to ensure common results.
Belt Driven Pump Output For a 15 Second Period
7.5 U.S. Qt. (7.1 L) Minimum
Seawater Pump Disassembly
1. Remove the five screws from the seawater pump body.
75277
a
b
a-Screws (5)
b-Seawater Pump Body
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