Yamaha F4A Owner's Manual page 62

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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 tough 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.
EMU00994
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.
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) Remove the cap 1 for fogging on the
silencer cover.
5) Run the engine at a fast idle for 10~15
minutes.
6) Just prior to turning off the engine,
quickly spray
Engine Fogging Oil" (Part No. LUB-
STRRT-12-00) into the silencer cover.
When properly done, the engine will
smoke excessively and almost stall.
4-5
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