Chapter 3
At Helm/ Deck
Check power trim for operation.
Check control lever for operational defects. Check the clip and
safety lanyard for functionality.
Check gauges for accuracy.
Check fuel level and ensure it is su cient for the outboard and
inbound trip with a reserve.
ENGINE COOLING SYSTEM
Your typical engine normally utilizes a raw water cooling system
for cooling the engine. It is important that this system continues to
run properly at all times to avoid hazardous situations and ensure a
safe voyage.
Raw water is drawn up through the stern drive through pick-up
feeds by the water pump. Water passes through a thermostat which
controls how much cool water circulates through the engine before
passing through a circulatory pump and impeller that distributes
the coolant throughout the engine block. e cool water absorbs
heat produced by the engine, before being emitted via a coolant
exhaust system.
Impeller/ Water Pump
Periodically, the coolant system’s impeller and pump should be
inspected for debris or damage. Damaged parts will a ect the
system’s ability to function, and may cause engine damage.
3-4
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