Storing Outboard Motor; Conditioning And Stabilizing Gasoline - Yamaha F9.9 Manuel De L'utilisateur

Maintenance
TIP:
When transporting the outboard motor in a
horizontal position, place a towel or some-
thing similar under the outboard motor to
protect it from damage.
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Storing outboard motor

When storing your Yamaha outboard motor
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage.
It is advisable to have your outboard motor
serviced by an authorized Yamaha dealer pri-
or to storage. However, you, the owner, with
a minimum of tools, can perform the follow-
ing procedures.
ECM01081
NOTICE
 To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the outboard motor in
the attitude shown when transporting
and storing it. If storing or transporting
the outboard motor on its side (not up-
right), put it on a cushion after draining
the engine oil.
 Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through the
exhaust port and cause engine trouble.
72
 Store the outboard motor in a dry, well-
ventilated place, not in direct sunlight.
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Conditioning and stabilizing gasoline

When preparing to store a boat for extended
periods (2 months or longer) it is best to com-
pletely remove all gasoline from the boat's
fuel tank(s). If it is not possible to remove the
gasoline, add one ounce of "Yamalube Fuel
ZMU08291
Stabilizer & Conditioner Plus" to each gallon
of gasoline in a full tank of gasoline to provide
fuel stability and corrosion protection.
TIP:
Do not fill the fuel tank(s) to the point of over-
flowing. Approximately 7/8 full will allow
enough space in the fuel tank to prevent gas-
oline purging from the fuel tank vent due to
expansion with temperature changes.
Do not cap the fuel tank vent. Excessive
pressure could damage the boat and motor's
fuel systems.
A partially filled fuel tank, less than 7/8 full but
not completely empty, is not recommended.
Air space above the gasoline allows air
movement which can bring in water through
condensation as the air temperature chang-
es.
Condensation inside the fuel tank can cause
corrosion problems and phase separation of
gasoline containing ethanol.
Consult your Yamaha dealer concerning pre-
ventative measures that may work best for
the gasoline and environmental conditions in
your area.