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Mercury 50 4-Stroke User Manual

Mercury 50 4-Stroke
134 pages
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TROUBLESHOOTING
96
Engine Runs Erratically
POSSIBLE CAUSES
Guardian System activated. Refer to Features & Controls -
Warning System.
Spark plugs fouled or defective. Refer to Maintenance section.
Incorrect setup and adjustments.
Fuel is being restricted to the engine.
a. Engine fuel filter is obstructed. Refer to Maintenance
section.
b. Fuel tank filter obstructed.
c. Stuck anti‑siphon valve located on permanently built‑in
type fuel tanks.
d. Fuel line is kinked or pinched.
Fuel pump failure.
Ignition system component failure.
Fuel injection component failure (EFI Models).
Performance Loss
POSSIBLE CAUSES
Engine Guardian System activated. Refer to Features &
Controls - Warning System.
Throttle not fully open.
Damaged or improper size propeller.
Incorrect engine timing, adjustments, or setup.
Boat overloaded or load improperly distributed.
Excessive water in bilge.
Boat bottom is dirty or damaged.
Battery Will Not Hold Charge
POSSIBLE CAUSES
Battery connections are loose or corroded.
Low electrolyte level in battery.
Worn out or inefficient battery.

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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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