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Mercury 25 4-Stroke User Manual

Mercury 25 4-Stroke
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FEATURES & CONTROLS
27
ob00330
a
b
c
d
a - Horn inside remote control
b - Horn inside key switch
c - Horn in ignition key panel
d - Horn below tiller handle
WARNING SYSTEM OPERATION
The warning horn will emit either a continuous beep or intermittent short beeps and engine speed will be limited
to 2000 RPM. This will alert the operator and help identify the following listed situations.
Warning System
Function Sound Description
Engine Over Temperature Continuous Engine Over Heat
Low Oil Pressure Intermittent Short Beeps Low Oil Pressure
ENGINE OVER HEAT
If the engine overheats, immediately reduce throttle speed to idle. Shift 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 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.
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.

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Mercury 25 4-Stroke Specifications

General IconGeneral
Engine Type4-Stroke
Horsepower25 hp
Cylinders2
Fuel Induction SystemElectronic Fuel Injection (EFI)
Full Throttle RPM Range5000-6000 RPM
Starting SystemElectric
SteeringRemote or Tiller
Shaft Length15 in / 20 in
Dry Weight157 lbs
Fuel Tank CapacityExternal
Oil Capacity1.5 L (with filter)

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