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Mercury 25 4-Stroke User Manual

Mercury 25 4-Stroke
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MAINTENANCE
51
Exterior Care
Your outboard is protected with a durable baked enamel finish. Clean and wax often using marine cleaners and
waxes.
Battery Inspection
The battery should be inspected at periodic intervals to ensure proper engine starting capability.
IMPORTANT: Read the safety and maintenance instructions which accompany your battery.
1. Turn off the engine before servicing the battery.
2. Add water as necessary to keep the battery full.
3. Make sure the battery is secure against movement.
4. Battery cable terminals should be clean, tight, and correctly installed. Positive to positive and negative to
negative.
5. Make sure the battery is equipped with a nonconductive shield to prevent accidental shorting of battery
terminals.
Fuel System
!
WARNING
Avoid serious injury or death from gasoline fire or explosion. Carefully follow all fuel system service instructions.
Always stop the engine and do not smoke or allow open flames or sparks in the area while servicing any part
of the fuel system.
Before servicing any part of the fuel system, stop engine and disconnect the battery. Drain the fuel system
completely. Use an approved container to collect and store fuel. Wipe up any spillage immediately. Material used
to contain spillage must be disposed of in an approved receptacle. Any fuel system service must be performed in
a well ventilated area. Inspect any completed service work for signs of fuel leakage.
FUEL LINE INSPECTION
Visually inspect the fuel line and primer bulb for cracks, swelling, leaks, hardness, or other signs of deterioration
or damage. If any of these conditions are found, the fuel line or primer bulb must be replaced.
FUEL LINE FILTER
Inspect the fuel line filter. If the filter appears to be contaminated, remove and replace.
ob00630
IMPORTANT: Visually inspect for fuel leakage from the filter connections by squeezing the primer bulb until firm,
forcing fuel into the filter.

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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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