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Maintenance
42
EMU28302
Procedure
EMU28380
Flushing with the flushing attachment
1. Wash the outboard motor body using
fresh water. For further information, see
page 44.
2. Fill the fuel tank with fresh fuel and add
one ounce of “Yamaha Fuel Conditioner
and Stabilizer” (Part No. LUB-FUELC-
12-00) to each gallon of fuel.
NOTE:
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 silencer
cover/cap. Remove the propeller.
4. Install the flushing attachment over the
cooling water inlet.
CAUTION:
ECM00300
Do not run the engine without supplying
it with cooling water. Either the engine
water pump will be damaged or the en-
gine will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water passag-
es.
CAUTION:
ECM00310
Avoid running the outboard motor at high
speed while on the flushing attachment,
otherwise overheating could occur.
5. Cooling system flushing is essential to
prevent the cooling system from clog-
ging up with salt, sand, or dirt. In addi-
tion, fogging/lubricating of the engine is
mandatory to prevent excessive engine
damage due to rust. Perform the flush-
ing and fogging at the same time.
WARNING
EWM00090
●
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.
6. Run the engine at a fast idle for 10–15
minutes in neutral position while supply-
ing fresh water.
7. Just prior to turning off the engine, quick-
ly spray “Yamaha Stor-Rite Engine
Fogging Oil” (Part No. LUB-STRRT-12-
00) alternately into each carburetor/
each intake manifold. When properly
done, the engine will smoke excessively
and almost stall.
8. Remove the flushing attachment and
wipe off any excess water.
9. Install the silencer cover/cap and top
cowling. Install the propeller.
1. Flushing attachment