Mercury 25 Jet FourStroke, Руководство по эксплуатации, техническому обслуживанию и установке

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ENGINE OVERHEAT
If the engine overheats, immediately reduce throttle speed to idle. Shift the
outboard into neutral and check for a steady stream of water coming out of the
water pump indicator hole.
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If no water is coming out of the water pump indicator hole, or flow is
intermittent; stop the engine and check the cooling water intake holes for
obstruction. If no obstruction is found, there may be 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.
If a steady flow of water is coming out of the water pump indicator hole and the
engine continues to overheat, consult your dealer. Operating an overheated
engine 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.
LOW OIL PRESSURE
The warning system is activated if the oil pressure drops too low. First, stop the
engine and check the oil level. Add oil if necessary. If the oil is at the
recommended level and the warning horn continues to sound, consult your
dealer. Engine speed will be limited to 2800 RPM, however, you should not
continue to operate the engine.
ENGINE OVERSPEED LIMITER
The outboard is equipped with an engine overspeed limiter which limits the
engine maximum RPM. This protects the engine from mechanical damage.
Some causes of engine overspeed are as follows:
• Outboard mounted too high on the transom
• Worn jet pump impeller or liner
• Incorrect jet pump impeller clearance adjustment
• Tilting the outboard out beyond a vertical position
• Cavitation of the impeller due to rough water or obstruction in the boat hull
• Blockage of the water intake
FEATURES AND CONTROLS
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