Yamaha F9.9B Owner's Manual page 74

4-5
EMU00338
Flushing Cooling System and Fogging
Engine
Cooling system flushing is essential to pre-
vent the cooling system from clogging up
with salt, sand, or dirt. In addition, fogging of
the engine is mandatory to prevent expen-
sive engine damage due to rust. Perform
the flushing and fogging at the same time.
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8 Do not touch or remove electrical
parts when starting or during opera-
tion.
8 Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
EMU00340
8 Flushing in a Water Tank
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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.
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) into the silencer cover. When prop-
erly done, the engine will smoke exces-
sively and almost stall.
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