FEATURES AND CONTROLS
58
ENGINE OVERHEAT
Check for a steady stream flowing out of the water pump indicator
hole. If no water is coming out of the water pump indicator hole or
flow is intermittent, stop engine and check cooling water intake
holes for obstruction. If no obstruction is found, this may indicate
a blockage in the cooling system or a water pump problem. Have
the outboard checked by your dealer. Operating the engine while
overheated will cause engine damage.
NOTE: Should overheating occur and you are stranded, stop the
engine and allow it to cool down. This will usually allow some
additional low speed (idle) running time before the engine starts to
overheat again.
ENGINE OVER-SPEED LIMITER
If engine speed exceeds 6400 RPM, the over‑speed limiter will be
activated. The engine timing will be momentarily retarded to
prevent operation above this limit.
Some causes of engine over‑speed are as follows:
• Propeller ventilation
• A propeller which has an incorrect pitch or diameter
• Propeller hub slippage
• Outboard mounted too high on the transom
• Tilting the outboard out beyond a vertical position
• Cavitation of the propeller due to rough water or obstruction
in the boat hull
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