Lubrication; Flushing Power Unit - Yamaha F20B Owner's Manual

Maintenance
12. If the "Fogging Oil" is not available, run
the engine at a fast idle until the fuel sys-
tem becomes empty and the engine
stops.
13. Drain the cooling water completely out
of the motor. Clean the body thoroughly.
14. If the "Fogging Oil" is not available, re-
move the spark plug(s). Pour a tea-
spoonful of clean engine oil into each
cylinder. Crank several times manually.
Replace the spark plug(s).
15. Drain the fuel from the fuel tank.
16. Store the fuel tank in a dry, well-ventilat-
ed place, not in direct sunlight.
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Lubrication

1. Install the spark plug(s) and torque to
proper specification. For information on
spark plug installation, see page 67.
2. Change the gear oil. For instructions,
see page 72. 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 66.
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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Flushing power unit

Perform this procedure right after operation
for the most thorough flushing.
ECM01530
NOTICE
Do not perform this procedure while the
engine is running. The water pump may
be damaged and severe damage from
60
overheating can result.
1. After shutting off the engine, unscrew
the garden hose connector from the fit-
ting on the bottom cowling.
2
1. Fitting
2. Garden hose connector
3. Garden hose adapter
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
off the water and disconnect the garden
hose adapter from the garden hose con-
nector.
4. Reinstall the garden hose connector
onto the fitting on the bottom cowling.
Tighten the connector securely. NO-
1
3
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