Storage; Storage Preparation - Mercury 50 4-Stroke Manual

Storage Preparation

The major consideration in preparing your outboard for storage is
to protect it from rust, corrosion, and damage caused by freezing
of trapped water.
The following storage procedures should be followed to prepare
your outboard for out of season storage or prolonged storage (two
months or longer).
Failure to provide sufficient cooling water will damage the water
pump and cause the engine to overheat. Provide a sufficient
supply of water at the water inlets during operation.
FUEL SYSTEM
IMPORTANT: Gasoline containing alcohol (ethanol or methanol)
can cause a formation of acid during storage and can damage the
fuel system. If the gasoline being used contains alcohol, it is
advisable to drain as much of the remaining gasoline as possible
from the fuel tank, remote fuel line, and engine fuel system.
Fill the fuel tank and engine fuel system with treated (stabilized)
fuel to help prevent formation of varnish and gum. Proceed with
following instructions.
• Portable Fuel Tank ‑ Pour the required amount of gasoline
stabilizer (follow instructions on container) into fuel tank. Tip
fuel tank back and forth to mix stabilizer with the fuel.
• Permanently Installed Fuel Tank ‑ Pour the required amount
of gasoline stabilizer (follow instructions on container) into a
separate container and mix with approximately one quart (one
liter) of gasoline. Pour this mixture into fuel tank.
• Remove the fuel filter sight bowl and empty contents in a
suitable container. Refer to Maintenance - Fuel System for
removal and installation of filter. Add 3 cc (1/2 tsp.) of gasoline
stabilizer into the fuel filter sight bowl and reinstall.
• Place the outboard in water or connect flushing attachment for
circulating cooling water. Run the engine for 15 minutes to fill
the engine fuel system.

STORAGE

NOTICE
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