Maintenance
34
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 engine top cowling and si-
lencer cover.
4. Install the outboard motor on the test
tank.
5. Fill the tank with fresh water to above the
level of the anti-cavitation plate.
CAUTION:
ECM00300
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. Before
starting the engine, be sure to supply wa-
ter to the cooling water passages.
CAUTION:
ECM00290
If the fresh water level is below the level of
the anti-cavitation plate, or if the water
supply is insufficient, engine seizure may
occur.
6. Cooling system flushing is essential to
prevent the cooling system from clogging
up with salt, sand, or dirt. In addition, fog-
ging of the engine is mandatory to pre-
vent excessive engine damage due to
rust. Perform the flushing 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.
7. Run the engine at a fast idle for 10–15
minutes in neutral position.
8. Just prior to turning off the engine, quickly
spray “Yamaha Stor-Rite Engine Fogging
Oil” (Part No. LUB-STRRT-12-00) alter-
nately into each carburetor or the fogging
hole of the silencer cover, if equipped.
When properly done, the engine will
smoke excessively and almost stall.
9. Remove the outboard motor from the test
tank.
10. Drain the cooling water completely out of
the motor. Clean the body thoroughly.
11. Install the silencer cover/cap and top
cowling.
1. Water surface
2. Lowest water level
ZMU02051
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U63V17E0.book Page 34 Thursday, February 26, 2004 11:52 AM
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