Preoperation Checks; Fuel; Oil; Controls - Yamaha 9.9D Owner's Manual

Operation
EMU27101

Preoperation checks

EWM00080
WARNING
If any item in the preoperation check is not
working properly, have it inspected and
repaired before operating the outboard
motor. Otherwise an accident could occur.
ECM00120
CAUTION:
Do not start the engine out of water. Over-
heating and serious engine damage can
occur.
EMU27110

Fuel

Check to be sure you have plenty of fuel for
G
your trip.
Make sure there are no fuel leaks or gaso-
G
line fumes.
Check fuel line connections to be sure they
G
are tight (if equipped Yamaha fuel tank or
boat tank).
Be sure the fuel tank is positioned on a se-
G
cure, flat surface, and that the fuel line is not
twisted or flattened, or likely to contact
sharp objects (if equipped Yamaha fuel
tank or boat tank).
EMU27120

Oil

Check to be sure you have plenty of oil for
G
your trip.
EMU27130

Controls

Check throttle, shift, and steering for proper
G
operation before starting the engine.
The controls should work smoothly, without
G
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.
19
EMU27140

Engine

Check the engine and engine mounting.
G
Look for loose or damaged fasteners.
G
Check the propeller for damage.
G
EMU27233

Filling fuel and engine oil

EMU27242

Filling fuel for portable tank

EWM00060
WARNING
Gasoline and its vapors are highly flam-
mable and explosive. Keep away from
sparks, cigarettes, flames, or other sourc-
es of ignition.
1. Remove the fuel tank cap.
2. Fill the fuel tank carefully.
3. Close the cap securely after refueling.
Wipe up any spilled fuel.
Fuel tank capacity (if equipped Yamaha
fuel tank):
24.0 L (6.34 US gal) (5.28 Imp.gal)
EMU27270

Ring Free Fuel Additive

Gasoline is a precise blend of many different
substances, each chosen to give certain char-
acteristics. Gasoline blends have been
changing in recent years in response to con-
cerns about pollution and resulting emissions
regulations. One of the most obvious changes
has been the elimination of lead from most fu-
els.
As gasoline has changed, the amount of addi-
tives such as aromatics and oxygenates has
increased. These additives are important for
the engines in passenger cars, but they can
have detrimental effects in marine engines,
because of increased deposits in the combus-
tion chamber. When enough deposits collect,
piston rings begin sticking. Performance
drops and engine wear increases dramatical-
ly.