Lubrication; Cleaning The Outboard Motor - Yamaha F4B Owner's Manual

ing of the engine is mandatory to prevent ex-
cessive engine damage due to rust. Perform
the flushing and fogging at the same time.
1. Wash the outboard motor body using
fresh water. NOTICE: Do not spray wa-
ter into the air intake.
information, see page 48.
2. Completely drain the fuel from the fuel
tank, and then remove the top cowling
and fogging hole cap. For further informa-
tion, see steps 2-4 in "Flushing in a test
tank".
3. Remove the propeller. For further infor-
mation, see page 57.
4. Remove the screw located beside the
" " (wash) mark on the lower case.
Install the water flush plug and connect it
to a fresh water tap.
5. Cover the cooling water inlet with tape.
6. Turn on the water supply to the outboard
motor.
1. Water flush plug
7. Start the engine, operate it for a few min-
utes at engine idle speed, and then spray
"Fogging Oil" into the fogging hole of the
silencer. For further information, see
steps 8-11 in "Flushing in a test tank".
8. Turn off the water supply to the outboard
motor, and then remove the water flush
plug and tape.
For further
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9. Drain the cooling water completely out of
the outboard motor. Clean the body thor-
oughly. Install the fogging hole cap and
top cowling.
10. Install the propeller. For further informa-
tion, see page 58.
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Lubrication

1. Install the spark plug and torque to proper
specification. For information on spark
plug installation, see page 54.
2. Change the gear oil. For instructions, see
page 58. Inspect the oil for the presence
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 53.
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 the outboard motor

After use, wash the exterior of the outboard
motor with fresh water. Flush the cooling sys-
tem with fresh water.
Maintenance
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48