GENERAL SERVICE INFORMATION
Diesel Fuel
3-6 6LY3 Service Manual
© 2007 Yanmar Marine International
DIESEL FUEL
Diesel Fuel Specifications
NOTICE: Use the correct fuel type to maintain
engine performance and reduce engine wear and
ensure compliance with emission regulations.
Fuel Selection
Diesel fuel should comply with the following
specifications:
• The fuel specifications need to comply with
national and international standards.
• ASTM D975 No. 1-D
No. 2-D for USA
• EN590: 96 for EU
• ISO 8217 DMX International
• BS 2869-A1 or A2 for UK
• JIS K2204-2 for JAPAN
Additional Fuel Requirements
• Fuel cetane number should equal 45 or higher.
• Sulfur content should not exceed 0.5% by
volume. (Preferably it should be below 0.05%.)
• Water and sediment in the diesel fuel should not
exceed 0.05% by volume.
• Ash should not exceed 0.01% by mass.
• Carbon residue content of the diesel fuel should
not exceed 0.35% by volume. (Preferably it
should be below 0.1%.)
• Total aromatic content of the diesel fuel should
not exceed 35% by volume. (Preferably it should
be below 30% and aromatic polycyclic aromatic
hydrocarbons (PAH*) content of the diesel fuel
should be below 10%.)
NOTICE: Mixing winter and summer fuel, using
Kerosene, residual fuel or Biocide produces poor
fuel quality and will result in reduced engine
performance and excessive wear of internal
components.
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