Engine; Checking The Engine Oil Level; Filling Fuel; Ring Free Fuel Additive - Yamaha F9.92D Owner's Manual

er operation before starting the engine.
The controls should work smoothly, with-
G
out binding or unusual free play.
Look for loose or damaged connections.
G
Check operation of the starter and stop
G
switches when the outboard motor is in the
water.
EMU27140

Engine

Check the engine and engine mounting.
G
Look for loose or damaged fasteners.
G
Check the propeller for damage.
G
EMU27163

Checking the engine oil level

1. Put the outboard motor in an upright po-
sition (not tilted).
2. Remove oil dipstick and wipe it clean.
3. Completely insert the dipstick and re-
move it again.
4. Check the oil level using the dipstick to
be sure the level falls between the upper
and lower marks. Fill with oil if it is below
the lower mark, or drain to the specified
level if it is above the upper mark.
1
3
1. Lower level mark
2. Oil dipstick
3. Upper level mark
NOTE:
Be sure to completely insert the dipstick into
the dipstick guide.
2
ZMU02082
EMU30021

Filling fuel

EWM00060
WARNING
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other
sources of ignition.
1. Remove the fuel tank cap.
2. Carefully fill the fuel tank.
3. Securely close the cap after filling the
tank. Wipe up any spilled fuel.
EMU27270

Ring Free Fuel Additive

Gasoline is a precise blend of many different
substances, each chosen to give certain
characteristics. Gasoline blends have been
changing in recent years in response to con-
cerns about pollution and resulting emis-
sions regulations. One of the most obvious
changes has been the elimination of lead
from most fuels.
As gasoline has changed, the amount of ad-
ditives such as aromatics and oxygenates
has increased. These additives are impor-
tant for the engines in passenger cars, but
they can have detrimental effects in marine
engines, because of increased deposits in
the combustion chamber. When enough de-
posits collect, piston rings begin sticking.
Performance drops and engine wear in-
creases dramatically.
While many additives available may reduce
deposits, Yamaha recommends the use of
Ring Free Fuel Additive, available from
your Yamaha dealer. Ring Free Fuel Addi-
tive has repeatedly proven its ability to clean
combustion deposits from inside the engine,
notably the critical piston-ring-land area, and
fuel system components. Follow product la-
beling for use instructions.
Operation
28