Protecting Internal Engine Components; Gearcase - Mercury 4C Instruction Manual

• Spray Quicksilver or Mercury Precision Lubricants Corrosion
Guard on external metal surfaces (except corrosion control
anodes).
Tube
Description
Ref No.
Corrosion
120
Guard

Protecting Internal Engine Components

NOTE: Make sure the fuel system has been prepared for
storage. Refer to Fuel System, preceeding.
IMPORTANT: Refer to Maintenance ‑ Spark Plug Inspection and
Replacement for correct procedure for removing spark plug
boots.
• Place the outboard in water. Start the engine and let it run in
neutral to warm up.
• With engine running at fast idle, stop the fuel flow by closing
the fuel shut‑off valve. When engine begins to stall, quickly
spray Quicksilver or Mercury Precision Lubricants Storage
Seal into carburetor until engine stops from lack of fuel.
• Remove the spark plug and inject a five second spray of
storage seal around the inside of the cylinder.
• Rotate the flywheel manually several times to distribute the
storage seal in the cylinder. Reinstall spark plug.

Gearcase

• Drain and refill the gearcase lubricant (refer to Gearcase
Lubrication).
STORAGE
Where Used
External metal surfaces
78
Part No.
92-802878 55
eng