Procedure - Yamaha F50F Owner's Manual

por separator for a prolonged period of
time will break down and could cause
damage to the fuel line.
EMU28303

Procedure

EMU29955
Flushing with the flushing attachment
1. Wash the outboard motor body using
fresh water. NOTICE: Do not spray wa-
ter into the air intake.
ther information, see page 65.
2. Disconnect the fuel line from the motor
or shut off the fuel cock, if equipped.
3. Remove the top cowling and propeller.
4. Install the flushing attachment over the
cooling water inlet. NOTICE: Do not run
the engine without supplying it with
cooling water. Either the engine wa-
ter pump will be damaged or the en-
gine will
overheating. Before starting the en-
gine, be sure to supply water to the
cooling water passages. Avoid run-
ning the outboard motor at high
speed while on the flushing attach-
ment, otherwise overheating could
occur.
[ECM02000]
1. Flushing attachment
5. Cooling system flushing is essential to
prevent the cooling system from clog-
For fur-
[ECM01840]
be damaged
ging up with salt, sand, or dirt. In addi-
tion, fogging/lubricating the engine is
mandatory to prevent excessive engine
damage due to rust. Perform the flush-
ing and fogging at the same time.
WARNING! Do not touch or remove
electrical parts when starting or dur-
ing operation. Keep hands, hair, and
clothes away from the flywheel and
other rotating parts while the engine
is running.
TIP:
When using the flushing attachment,
●
maintain adequate water pressure and a
steady water flow.
If the overheat alert device is activated,
●
turn the engine off, and consult your
Yamaha dealer.
6. Run the engine at a fast idle for a few
from
minutes in neutral position.
7. Just prior to turning off the engine, quick-
ly spray "Fogging Oil" alternately into the
intake silencer or the fogging hole of the
silencer cover, if equipped. When prop-
erly done, the engine will smoke exces-
sively and almost stall.
8. Drain the remained gasoline in the vapor
separator with a container. Loosen the
drain screw, and then remove the cap.
Push in the air valve with a screwdriver
to introduce air into the float chamber, so
that the gasoline will drain smoothly.
Then, tighten the drain screw.
Maintenance
[EWM00091]
63