Yamaha F30A Owner's Manual page 136

EMU00345
Flushing Cooling System
cC
Do not run the engine without supplying
the engine cooling water. Either the
engine water pump will be damaged or
the engine will overheat and be dam-
aged. Before starting the engine, supply
water to the cooling water passage.
EMU00346
8 Flushing in a Water Tank
1) Install the outboard motor on the
q
water tank.
2) Fill the tank with fresh water to above
w
the level of the anti-cavitation plate.
3) Shift into neutral and start the engine.
4) Run the engine at low speed for a few
minutes.
605024
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 Water surface
2 Lowest water level
4-7
GB