Mercury 8/9.9 BigFoot, Manual, Page: 127 / 153

STORAGE
eng
115
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).
NOTICE
Without sufficient cooling water, the engine, the water pump,
and other components will overheat and suffer damage.
Provide a sufficient supply of water to 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
the 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 1 liter
(1 U.S. quart) of gasoline. Pour this mixture into fuel tank.
• Place the outboard in water or connect flushing attachment
for circulating cooling water. Run the engine for ten minutes
to fill the engine fuel system.