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EMU00338
Flushing Cooling System and Fogging
Engine
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 expensive engine damage due to
rust. Perform the flushing and fogging at
the same time.
w
8 Do not touch or remove electrical parts
when starting or during operation.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
EMU00339
8 Flushing in a Water Tank
cC
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.
1) Remove the engine top cowling and
silencer cover.
2) Install the outboard motor on the
water tank.
3) Fill the tank with fresh water to above
the level of the anti-cavitation plate.
4) Run the engine at a fast idle for 10~15
minutes.
5) Just prior to turning off the engine,
quickly spray “Yamaha Stor-Rite
Engine Fogging Oil” (Part No. LUB-
STRRT-12-00) alternately into each
carburetor. When properly done, the
engine will smoke excessively and
almost stall.
65W-9-16-4 3/15/02 5:16 PM Page 7