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Mercury 25 Series User Manual

Mercury 25 Series
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MAINTENANCE
79
Remote control models Visually check steering link rod
fasteners for proper tightness. See Steering Link Rod
Fasteners.
Check propeller blades for damage.
AFTER EACH USE
Flush out the outboard cooling system if operating in salt or
polluted water. See Flushing the Cooling System.
Wash off all salt deposits and flush out the exhaust outlet of
the propeller and gearcase with fresh water if operating in
saltwater.
EVERY 100 HOURS OF USE OR ONCE YEARLY,
WHICHEVER OCCURS FIRST
Lubricate all lubrication points. Lubricate more frequently
when used in saltwater. See Lubrication Points.
Inspect and clean spark plugs. See Spark Plug Inspection and
Replacement.
Check fuel line filter for contaminants. See Fuel System.
Check carburetor adjustments, if required. See Carburetor
Adjustments.
Check corrosion control anodes. Check more frequently when
used in saltwater. See Corrosion Control Anodes.
Drain and replace gearcase lubricant. See Gearcase
Lubrication.
Lubricate splines on the driveshaft and shift shaft.
1.
Electric start models Inspect battery. See Battery
Inspection.
Remote control models ‑ Check control cable adjustments.
1.
Remove engine deposits with Mercury Precision or
Quicksilver Power Tune Engine Cleaner.
Check tightness of bolts, nuts, and other fasteners.
Clean fuel tank pick up filter.
1. These items should be serviced by an authorized dealer.

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Mercury 25 Series Specifications

General IconGeneral
Gear Ratio2.08:1
Horsepower25 HP
SteeringTiller
Shaft Length15 in, 20 in
StartingManual
Full Throttle RPM Range5000- RPM
Fuel TypeGasoline

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