Outboard engines are raw water (seawater) cooled. Water is
pumped through the water inlets (
5
), circulated through the
engine block, and relinquished with the exhaust gases through
the propeller hub. The water pump uses a small impeller made
of synthetic rubber. The impeller and water pump cannot run dry
for more than a few seconds. In most outboard motors, some
cooling water is diverted through ports below the engine cowling
(
13
). This allows the operator to visually check the operation of
the cooling system. When the engine is started, always check
for a steady stream of water coming out of those ports.
NEVER RUN AN OUTBOARD MOTOR WITHOUT WATER FLOWING TO THE
WATER PUMP. SERIOUS DAMAGE TO THE WATER IMPELLER OR ENGINE
COULD RESULT.
Note: If the boat is used in salt or badly polluted water, the engines should
be flushed after each use. Refer to the engine owner’s manual for the
proper engine flushing procedure.
2.4
Engine Cooling System
14
Summary of Contents for 320 LXF
Page 1: ...320 LXF Scout Boats OWNER MANUAL ...
Page 2: ...Chapter 1 Owner s Information Warranty Certification and Boat Information ...
Page 11: ...Chapter 2 Propulsion A guide to your boat s propulsion system ...
Page 32: ...Chapter 4 Fuel System An overview of the fuel system of your boat ...
Page 40: ...Chapter 5 Electrical System An overview of the electrical system of your boat ...
Page 54: ...Chapter 6 Fresh Water System An overview of the fresh water system of your boat ...
Page 59: ...Chapter 7 Raw Water System An overview of the raw water system of your boat ...
Page 65: ...Chapter 8 Drainage System An overview of the drainage system of your boat ...
Page 70: ...Chapter 9 Ventilation System An overview of the ventilation system of your boat ...
Page 73: ...Chapter 10 Exterior Equipment An overview of the exterior equipment on your boat ...
Page 83: ...Chapter 11 Interior Equipment An overview of the interior equipment on your boat ...
Page 88: ...Chapter 12 Safety Equipment An overview of the safety equipment on your boat ...
Page 99: ...Chapter 13 Operation A general guide to operating your boat ...
Page 124: ...Chapter 14 Routine Maintenance A guide to keeping your boat running in good condition ...
Page 147: ...Chapter 16 Appendix Reference documents logs and schematics for your boat ...
Page 154: ...153 ...
Page 155: ...154 ...
Page 156: ...155 ...
Page 157: ...156 ...
Page 159: ...158 ...
Page 160: ...159 ...
Page 162: ...161 ...