Regal 3300 Owner's Manual page 78

CHAPTER 3
Fuel
Gasoline Requirements – Always follow the outboard manufacturer's
fuel octane requirements and ethanol guidelines in the owner's manual.
Gasoline is blended with 10% ethanol and is known as E-10 at the
pumps. Marine engines used in your Regal boat may be operated with
gasoline blended with no more than 10% ethanol and that meets the
minimum octane specification.
Ethanol in fuel is a strong cleaning solvent that can clean fuel system
gum and varnish. As a trade off these released deposits can clog fuel
system parts such as filters and engine fuel injectors.
Do not use ethanol blends greater than 10% such as E-15 to E-85. Your
marine engine may be damaged by more than 10% ethanol. This type
of fuel can cause a loss of performance, starting problems, serious fuel
system and engine damage.
Always use approved marine replacement parts that are
ignition protected. Using non-marine replacement parts may
cause fire and explosion that could result in death or serious
injury.
Engine
Engines function is based from four principles; fuel, compression,
ignition, and exhaust. The proper ratio of fuel and air must be drawn
into the engine's cylinders in order to be compressed by the pistons
and ignited by a spark the force of which pushes the piston back down,
providing the energy used to turn your propeller, before the engine
kicks into the exhaust stage where it expels the by-products. If any of
these four functions fail, so does the engine itself.
3-2
!
WARNING
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