Suzuki DF2.5 Owner's Manual page 6

NOTE:
If you are not satisfied with the operation or fuel
economy of your outboard motor when you are
using gasoline/alcohol blends, you should switch
back to unleaded gasoline containing no alcohol.
Be sure that any gasoline/alcohol blend you use
has octane ratings of at least 91 octane (Re-
search method).
If engine pinging is experienced, substitute an-
other brand as there are differences between
brands.
Unleaded gasoline will extend spark plug life.
CAUTION
Be careful not to spill fuel containing al-
cohol while refueling. Fuels containing al-
cohol can cause paint damage, which is
not covered under warranty.
WARNING
Gasoline is extremely flammable and toxic.
Always observe the following precautions
when refueling.
• Never permit anyone other than an adult
to refill the fuel tank.
• To refill the fuel tank, always stop the
motor.
• Do not fill the fuel tank all the way to the
top or fuel may overflow when it expands
due to heating by the sun.
• Be careful not to spill fuel. If you do, wipe
it up immediately.
• Do not smoke, and keep away from open
flames and sparks.
• Refuel in a well ventilated area.
• Avoid prolonged contact with skin and
breathing of gasoline vapor.
CAUTION
Always use fresh gasoline. Gasoline kept in
the fuel tank for long periods of time will pro-
duce varnish and gum, which can damage the
engine.
ENGINE OIL
Using a premium quality four stroke motor oil
will increase the service life of your motor. Use
only oils which are rated SE, SF, SG, SH or SJ
under the API classification system. The viscos-
ity rating should be SAE 10W-40. If an SAE 10W-
40 motor oil is not available, select an alterna-
tive according to the chart below.
CAUTION
The choice of engine oil is major factor af-
fecting engine performance and life.
GEAR OIL
Use SUZUKI OUTBOARD MOTOR GEAR OIL,
or an equivalent high quality SAE90 hypoid gear
oil.
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