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Mercury 50 4-Stroke User Manual

Mercury 50 4-Stroke
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MAINTENANCE
65
Inspect thermostat visually for corrosion and broken spring.
Make sure thermostat closes completely at room temperature.
1.
Check engine fuel filter for contaminants. See Fuel System.
Check engine timing setup.
1.
Check corrosion control anodes. Check more frequently when
used in salt water. See Corrosion Control Anodes.
Drain and replace gearcase lubricant. See Gearcase
Lubrication.
Lubricate splines on the driveshaft.
1.
Check power trim fluid. See Checking Power Trim Fluid.
Inspect battery. See Battery Inspection.
Check control cable adjustments.
1.
Inspect timing belt. See Timing Belt Inspection.
Check tightness of bolts, nuts, and other fasteners.
Check cowl seals to make sure seals are intact and not
damaged.
Check internal cowl sound reduction foam (if equipped) to
make sure foam is intact and not damaged.
Check that the intake silencer (if equipped) is in place.
Check that the idle relief muffler (if equipped) is in place.
Check for loose hose clamps and rubber boots (if equipped)
on the air intake assembly.
EVERY 300 HOURS OF USE OR THREE YEARS
Replace spark plugs at first 300 hours or third year. After that,
inspect spark plugs every 300 hours or three years. Replace
spark plugs as needed. See Spark Plug Inspection and
Replacement.
Replace water pump impeller (more often if overheating
occurs or reduced water pressure is noted).
1.
Check and adjust valve clearance, if necessary.
1.
BEFORE PERIODS OF STORAGE
Refer to Storage procedure. See Storage section.
1. These items should be serviced by an authorized dealer.

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Mercury 50 4-Stroke Specifications

General IconGeneral
Engine Type4-Stroke
Horsepower50 hp
Cylinders3
Starting SystemElectric
SteeringRemote
Displacement747 cc
Fuel Induction SystemEFI
Alternator Amp18 amp
Shaft Length20 in
Full Throttle RPM Range5000-6000 RPM
WOT Range5000-6000 RPM
Fuel Tank CapacityExternal Tank Required

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