Fuel And Oil; Avoiding Fuel Flow Restrictions; Fuel Requirements - Mercury 225 Manual

Avoiding Fuel Flow Restrictions

Adding components to the fuel supply system can damage the
engine. These additions can restrict fuel flow, stall the engine
at low speeds, and create lean fuel conditions at high speeds.
Follow all regulations for fuel system installation and do not
add any additional components to the fuel system.

Fuel Requirements

Use a major brand of unleaded gasoline, preferably without
alcohol.
The use of improper fuel can cause serious damage to the
engine. Damage resulting from the use of improper fuel is
considered engine misuse and is not covered under the limited
warranty. Use only the recommended fuel in the engine.
OCTANE REQUIREMENTS (U.S./CANADA)
FUEL TYPE
Unleaded premium
OCTANE REQUIREMENTS (OUTSIDE THE U.S./CANADA)
FUEL TYPE
Unleaded premium
1. Mercury Marine does not recommend using leaded gasoline. Read the information in
the Fuel Containing Alcohol section.
2. Mercury Marine does not recommend using leaded gasoline. Leaded gasoline is
acceptable in areas where unleaded gasoline is not available; however, exhaust
passageway corrosion may occur due to the accumulation of exhausted lead
particles. Automotive fuels that contain fuel injector cleaner are recommended for
added internal cleanliness.

FUEL AND OIL

NOTICE
NOTICE
MINIMUM POSTED OCTANE
1.
MINIMUM POSTED OCTANE
2.
44
87 (R+M)/2
92 RON
eng