14-5
14. PERIODIC SERVICE
Sc2400 Operator’s Manual
Bio-Diesel Fuels
In Europe and in the United States, as well as some
other countries, non-mineral oil based fuel resources
such as RME (Rapeseed Methyl Ester) and SOME
(Soybean Methyl Ester), collectively known as FAME
(Fatty Acid Methyl Esters), are being used as
extenders for mineral oil derived diesel fuels.
Cub Cadet Yanmar approves the use of bio-diesel
fuels that do not exceed a blend of 5% (by volume) of
FAME with 95% (by volume) of approved mineral oil
derived diesel fuel. Such bio-diesel fuels are known
in the marketplace as B5 diesel fuels.
These B5 diesel fuels must meet certain
requirements.
1. The bio-fuels must meet the minimum
specifications for the country in which they are
used.
• In Europe, bio-diesel fuels must comply with the
European Standard EN14214.
• In the United States, bio-diesel fuels must
comply with the American Standard ASTM D-
6751.
2. Bio-fuels should be purchased only from
recognized and authorized diesel fuel suppliers.
Precautions and concerns regarding the use of
bio-fuels:
1. Free methanol in FAME may result in corrosion of
aluminum and zinc FIE components.
2. Free water in FAME may result in plugging of fuel
filters and increased bacterial growth.
3. High viscosity at low temperatures may result in
fuel delivery problems, injection pump seizures,
and poor injection nozzle spray atomization.
4. FAME may have adverse effects on some
elastomers (seal materials) and may result in fuel
leakage and dilution of the engine lubricating oil.
5. Even bio-diesel fuels that comply with a suitable
standard as delivered, will require additional care
and attention to maintain the quality of the fuel in
the equipment or other fuel tanks. It is important
to maintain a supply of clean, fresh fuel. Regular
flushing of the fuel system, and/or fuel storage
containers, may be necessary.
6. The use of bio-diesel fuels that do not comply with
the standards as agreed to by the diesel engine
manufacturers and the diesel fuel injection
equipment manufacturers, or bio-diesel fuels that
have degraded as per the precautions and
concerns above, may affect the warranty
coverage of your engine.
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