Storage; Storage Preparation; Protecting External Outboard Components; Protecting Internal Engine Components - Mercury Racing 500R Operation And Maintenance 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).
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.
IMPORTANT: This outboard is equipped with a closed fuel system. Fuel within
the engine's fuel system, other than the fuel tank, will remain stable during
normal storage periods without the addition of fuel treatment stabilizers.
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.
• Permanently installed fuel tank ‑ Pour the required amount of Quickstor
Fuel Stabilizer (follow instructions on container) into a separate container
and mix with approximately one liter (one quart) of gasoline. Pour this
mixture into the fuel tank.
Description
Quickstor Fuel Stabilizer

Protecting External Outboard Components

• Touch up any paint nicks. See your dealer for touch‑up paint.
• Spray Quicksilver or Mercury Precision Lubricants Corrosion Guard on
external metal surfaces (except corrosion control anodes).
Description
Corrosion Guard

Protecting Internal Engine Components

IMPORTANT: Refer to Maintenance ‑ Spark Plug Inspection and Replacement
for correct procedure for removing spark plugs.
• Remove the high tension spark plug leads and spark plugs.
eng

STORAGE

NOTICE
Where Used
Fuel tank
Where Used
External metal surfaces
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Part No.
92-8M0047932
Part No.
92-802878 55