Procedure - Yamaha F50F Owner's Manual

Maintenance
por separator for a prolonged period of
time will break down and could cause
damage to the fuel line.
EMU28302

Procedure

EMU29953
Flushing with the flushing attachment
1. Wash the outboard motor body using
fresh water. For further information, see
page 55.
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.
ECM00300
CAUTION:
Do not run the engine without supplying
it with cooling water. Either the engine
water pump will be damaged or the en-
gine will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water passag-
es.
ECM00310
CAUTION:
Avoid running the outboard motor at high
speed while on the flushing attachment,
otherwise overheating could occur.
1. Flushing attachment
52
5. Cooling system flushing is essential to
prevent the cooling system from clog-
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.
EWM00090
WARNING
Do not touch or remove electrical parts
G
when starting or during operation.
Keep hands, hair, and clothes away
G
from the flywheel and other rotating
parts while the engine is running.
NOTE:
When using the flushing attachment,
G
maintain adequate water pressure and a
steady water flow.
If the overheat warning device is activated,
G
turn the engine off, and consult your
Yamaha dealer.
6. Run the engine at a fast idle for a few
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.