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Preparing the Generator
Operator’s Manual 15
ADDITIONAL TECHNICAL FUEL REQUIREMENTS
• The fuel cetane number should be equal to 45 or
higher.
• The sulfur content must not exceed 0.5% by volume
Less than 0.05% is preferred.
• Bio-Diesel fuels. See below.
• Never mix kerosene, used engine oil, or residual
fuels with the diesel fuel.
• Water and sediment in the fuel should not exceed
0.05% by volume.
• Keep the fuel tank and fuel-handling equipment
clean at all times.
• Poor quality fuel can reduce engine performance
and/or cause engine damage.
• Fuel additives are not recommended. Some fuel
additives may cause poor engine performance. Con
sult your Yanmar representative for more informa
tion.
• Ash content not to exceed 0.01% by volume.
• Carbon residue content not to exceed 0.35% by
volume. Less than 0.1% is preferred.
• Total aromatics content should not exceed 35% by
volume. Less than 30% is preferred.
• PAH (polycyclic aromatic hydrocarbons) content
should be below 10% volume.
• Metal content of Na, Mg, Si, and Al should be equal
to or lower than 1 mass ppm. (Test analysis method
JPI-5S-44-95)
BIO-DIESEL FUELS
In Europe and 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.
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-fuels are known in the marketplace as B5 fuels.
These B5 diesel fuels must meet certain require-
ments.
1. The bio-fuels must meet the minimum specications 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-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.