Yamaha F2.5B Owner's Manual page 61

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.
WARNING
@
G Do not touch or remove electrical parts
when starting or during operation.
G Keep hands, hair and clothes away
from flywheel and other rotating parts
while engine is running.
@
EMU00340
G
Flushing in a Water Tank
CAUTION:
@
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 properly done, the
engine will smoke excessively and almost
stall.
6) Remove the motor from the water tank.
7) Install the top cowling.
1 Water surface
2 Lowest water level
E