Maintenance
85
NOTICE
ECM01360
●
To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the outboard motor in
the attitude shown when transporting
and storing it. Do not store or transport
the outboard motor on its side (not up-
right).
●
Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through the
exhaust port and cause engine trouble.
●
Store the outboard motor in a dry, well-
ventilated place, not in direct sunlight.
EMU28305
Procedure
EMU30745
Flushing with the flushing attachment
1. Wash the outboard motor body using
fresh water. NOTICE: Do not spray wa-
ter into the air intake.
[ECM01840]
For further
information, see page 87.
2. Fill the fuel tank with fresh fuel and add
one ounce of “Yamaha Fuel Conditioner
and Stabilizer” to each gallon of fuel.
IP:
The use of “Yamaha Fuel Conditioner and
Stabilizer” 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. NOTICE: Do not run
the engine without supplying it with
cooling water. Either the engine water
pump will be damaged or the engine
will be damaged from overheating. Be-
fore 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.
[ECM02000]
5. Cooling system flushing is essential to
prevent the cooling system from clogging
up with salt, sand, or dirt. In addition, fog-
ging/lubricating of the engine is mandato-
ry to prevent excessive engine damage
due to rust. Perform the flushing and fog-
ging at the same time. WARNING! Do
not touch or remove electrical parts
when starting or during operation.
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
[EWM00091]
IP:
●
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. Run the engine at a fast idle for a few
minutes in neutral position while supply-
ing fresh water.
1. Flushing attachment
U63P1DE0.book Page 85 Tuesday, March 29, 2011 7:15 PM
©2019 Yamaha Motor Corporation, U.S.A.
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