Lubrication; Cleaning And Anticorrosion Measures; Flushing Power Unit - Yamaha F300 Owner's Manual

Maintenance
1. Wash the outboard motor body using
fresh water. NOTICE: Do not spray wa-
ter into the air intake.
2. Drain the cooling water completely out
of the motor. Clean the body thoroughly.
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Lubrication

1. Install the spark plug(s) and torque to
proper specification. For information on
spark plug installation, see page 93.
2. Change the gear oil. For instructions,
see page 98. Inspect the oil for the pres-
ence of water that indicates a leaky seal.
Seal replacement should be performed
by an authorized Yamaha dealer prior to
use.
3. Grease all grease fittings. For further de-
tails, see page 92.
TIP:
For long-term storage, fogging the engine
with oil is recommended. Contact your
Yamaha dealer for information about fogging
oil and procedures for your engine.
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Cleaning and anticorrosion
measures
1. Wash down the exterior of the outboard
motor with fresh water and dry off com-
pletely. NOTICE: Do not spray water
into the air intake.
2. Spray the outboard motor exterior with
"Yamaha Silicone Protectant". NOTICE:
Do not spray when the engine is run-
ning. Also, do not spray near the si-
lencer or into the engine. Otherwise
the engine could be damaged.
3. Wax the cowling with a non-abrasive
wax such as "Yamaha Silicone Wax".
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Flushing power unit

Perform this procedure right after operation
86
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for the most thorough flushing.
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NOTICE
Do not perform this procedure while the
engine is running. The water pump may
be damaged and severe damage from
overheating can result.
1. After shutting off the engine, unscrew
the garden hose connector from the fit-
ting on the bottom cowling.
1
3
1. Fitting
2. Garden hose adapter
3. Garden hose connector
2. Screw the garden hose adapter onto a
garden hose, which is connected to a
fresh water supply, and then connect it
to the garden hose connector.
3. With the engine off, turn on the water tap
and let the water flush through the cool-
ing passages for about 15 minutes. Turn
2
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