Yamaha VF150 Owner's Manual page 81

1. Wash the exterior of the outboard motor
using fresh water. NOTICE: Do not
spray water into the air intake.
For further information, see page 77.
2. Fill the fuel tank with fresh fuel and add
one ounce of "Yamalube Fuel Stabilizer
& Conditioner Plus" to each gallon of fu-
el.
TIP:
The use of "Yamalube Fuel Stabilizer & Con-
ditioner Plus" eliminates the need to drain the
fuel system. Consult your Yamaha dealer or
other qualified mechanic if the fuel system is
to be drained instead.
3. Remove the top cowling and propeller.
4. Install the flushing attachment over the
cooling water inlet, and then turn on the
water supply. NOTICE: Do not run the
engine without supplying it with cool-
ing water. Either the engine water
pump will be damaged or the engine
will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water pas-
sages. Avoid running the outboard
motor at high speed while on the
flushing attachment, otherwise over-
heating could occur.
1. Flushing attachment
[ECM01841]
[ECM02001]
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ZMU08016
TIP:
A flushing attachment is available from your
Yamaha dealer.
5. Run the engine at a fast idle for a few
minutes in neutral while supplying fresh
water. WARNING! Do not touch or re-
move electrical parts when starting or
during operation. Keep hands, hair,
and clothes away from the flywheel
and other rotating parts while the en-
gine is running.
TIP:
 When using the flushing attachment, main-
tain adequate water pressure so that there
is a steady flow of water from the cooling
water pilot hole.
 If the overheat alert device is activated, turn
the engine off, and consult your Yamaha
dealer.
6. Just prior to turning off the engine, quick-
ly spray "Yamaha Stor-Rite Engine Fog-
ging Oil" into the intake silencer. When
properly done, the engine will smoke ex-
cessively and almost stall.
7. Turn off the water supply, and then re-
move the flushing attachment and wipe
off any excess water.
8. Install the top cowling and propeller.
9. Drain the cooling water completely out of
the outboard motor. Clean the exterior of
the outboard motor thoroughly.
Maintenance
[EWM00092]
ZMU07858
75