Procedure - Yamaha F115A Owner's Manual

F150A, FL150A, F150A2, FL150A2, F150B
When storing your Yamaha outboard motor
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage.
It is advisable to have your outboard motor
serviced by an authorized Yamaha dealer pri-
or to storage. However, you, the owner, with
a minimum of tools, can perform the follow-
ing procedures.
ECM01351
NOTICE
 To prevent problems which can be
caused by oil entering the cylinder from
the sump, keep the outboard motor in
the attitude shown when transporting
and storing it. Do not store or transport
the outboard motor on its side (not up-
right).
 Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through the
exhaust port and cause engine trouble.
 Store the outboard motor in a dry, well-
ventilated place, not in direct sunlight.
 Drain the remaining gasoline from the
vapor separator. Gasoline left in the va-
por separator for a prolonged period of
time will break down and could cause
damage to the fuel line.
EMU28306

Procedure

EMU31376
Flushing with a flushing attachment
EWM00323
WARNING
You could be seriously injured if the en-
gine accidentally starts when you are near
the propeller.
 Before inspecting, removing, or install-
ing the propeller, remove the ignition
coils from the spark plugs. Also, place
the shift control in neutral, turn the main
switch to " " (off) and remove the key,
and remove the clip from the engine
shut-off switch. Turn off the battery cut-
off switch if your boat has one.
 Do not use your hand to hold the propel-
ler when loosening or tightening the
propeller nut. Put a wood block between
the anti-cavitation plate and the propel-
ler to prevent the propeller from turning.
TIP:
This procedure is performed while the top
cowling and propeller are removed.
1. Disconnect the fuel line from the motor.
2. Install the flushing attachment over the
cooling water inlet. NOTICE: Do not run
the engine without supplying it with
cooling water. Either the engine water
pump will be damaged or the engine
will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water pas-
sages. Avoid running the outboard
motor at high speed while on the
flushing attachment, otherwise over-
heating could occur.
1. Flushing attachment
Maintenance
[ECM02001]
80