Fuels that are blended to contain methanol or wood al-
cohol should not be used. ese fuels can corrode metal
parts in the fuel system and engine. Fuels that contain
methanol will damage the engine. Damage caused by the
use of unapproved fuels is not covered by warranty.
When the Boat Is Not Used for a While
Indmar recommends the regular use of Sta-Bil® fuel stabilizer for
boat users whose outings consume less than a tank of fuel every two
(2) weeks. Today’s fuels are more susceptible to degradation, and the
use of a quality stabilizer will help ensure fewer problems for the oc-
casional boater.
If the boat has not been used for more than thirty (30) days and
fuel remains in the tank (even stabilized fuel), the engine may run poorly
until the “old” fuel is used up. The manufacturer will not pay for repairs
to components that are inoperable or damaged from old and/or poor
quality fuel, as this is not covered under the engine warranty.
Extended storage with fuel in the system can affect the
fuel’s stability and may require system inspection and
fuel filter replacement when the unit is placed back into
service.
Using Oxygenated Fuels or
Fuels with Alcohol
MTBE (methyl tertiary butyl ether) is an oxygenate and octane
enhancer. This compound may be blended with fuel. Fuel that is no
more than fteen percent (15%) MTBE is acceptable for use in the
Indmar engine.
Ethyl alcohol, ethanol or grain alcohol is acceptable as long as it is a blend
and the blended fuel contains no more than ten percent (10%) ethanol.
Fuels Outside the
United States and Canada
If the Indmar-equipped boat is operated outside the USA or Cana-
da, unleaded fuels may be difcult to obtain. Leaded fuels are not recom-
mended as engine components will last longer using unleaded fuel.
Volkswagen Diesel Engine
If the MasterCraft boat is equipped with a Volkswagen diesel engine,
refer to the owners manual that comes with it for important informa-
tion regarding fueling and starting the engine.
mastercraft 2010 ow n e r ’s m anual • page 7-2
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