Maintenance; Transporting And Storing Outboard Motor; Storing Outboard Motor; Conditioning And Stabilizing Gasoline - Yamaha F350 Owner's Manual

Maintenance

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Transporting and storing outboard motor

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USE CARE when transporting fuel tank, whether in a

boat or car.
DO NOT fill fuel container to maximum capacity. Gas-

oline will expand considerably as it warms up and
can build up pressure in the fuel container. This can
cause fuel leakage and a potential fire hazard.
Leaking fuel is a fire hazard. Tighten securely the fuel

valve when transporting and storing the outboard
motor.
Never get under the outboard motor while it is tilted.

Severe injury could occur if the outboard motor acci-
dentally falls.
Do not use the tilt support lever or knob when traile-

ring the boat. The outboard motor could shake loose
from the tilt support and fall. If the outboard motor
cannot be trailered in the normal running position,
use an additional support device to secure it in the tilt
position.
Leaking fuel is a fire hazard. When trailering the boat, close
the fuel valve to prevent fuel from leaking.
The outboard motor should be transported and stored in the
normal running position. If there is insufficient road clear-
ance in this position, then trailer the outboard motor in the
tilt position using a motor support device such as a transom
saver bar. Consult your Yamaha dealer for further details.
When the outboard motor is tilted prolonged time for moor-
ing or trailering the boat, close the fuel valve.
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Storing outboard motor

When storing your Yamaha outboard motor for prolonged
periods of time (2 months or longer), several important pro-
cedures must be performed to prevent excessive damage.
It is advisable to have your outboard motor serviced by an
authorized Yamaha dealer prior to storage. However, you,
the owner, with a minimum of tools, can perform the follow-
ing procedures.
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Store the outboard motor in a dry, well-ventilated place,
not in direct sunlight.
Keep the outboard motor in the attitude shown when trans-
porting and storing it.
61
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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 completely remove all gaso-
line from the boat's fuel tank(s). If it is not possible to re-
move the gasoline, add one ounce of "Yamalube Fuel
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 overflowing. Ap-
proximately 7/8 full will allow enough space in the fuel tank
to prevent gasoline 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 complete-
ly empty, is not recommended. Air space above the gaso-
line allows air movement which can bring in water through
condensation as the air temperature changes.
Condensation inside the fuel tank can cause corrosion
problems and phase separation of gasoline containing eth-
anol.
Consult your Yamaha dealer concerning preventative mea-
sures that may work best for the gasoline and environmen-
tal conditions in your area.
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Procedure

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Cleaning the outboard motor
When cleaning the outboard motor, the top cowling must be
installed.
1.
1. Air intake
2.
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Lubrication

1.
2.
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TIP:
For long-term storage, fogging the engine with fogging oil is
Wash the exterior of the outboard motor using fresh wa-
ter. NOTICE: Do not spray water into the air intake.
[ECM01841]
1
Drain the cooling water completely out of the outboard
motor. Clean the body thoroughly.
Change the gear oil. For instructions, see page 69.
Check the gear oil for the presence of water that indi-
cates a leaky seal. Seal replacement should be per-
formed by an authorized Yamaha dealer prior to use.
Lubricate all grease fittings. For further details, see
page 66.
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