BEFORE YOU OPERATE DIESEL FUEL B7 diesel fuels must meet certain specifications. Diesel Fuel Specifications The biodiesel fuels must meet the minimum specifications for the country in which they are used: WARNING Fire and Explosion Hazard. Diesel fuel is flammable and explosive under certain conditions . In Europe, biodiesel fuels must comply with the European Standard EN590-2009, EN14214. Only use diesel fuels recommended by Yanmar for the best engine performance, to prevent engine damage and to comply with EPA warranty requirements. Only use clean diesel fuel. In the United States, biodiesel fuels must comply with the American Standard ASTM D6751 Grade-S15, D7467 Grade B7-S15.
Diesel fuel should comply with the following specifications. The table lists several worldwide specifications for diesel fuels. Biodiesel should be purchased only from recognized and authorized diesel fuel suppliers. Precautions and concerns regarding the use of biofuels: Biodiesel fuels have a higher content of methyl-esters, which may deteriorate certain metal, rubber and plastic components of the fuel system. The customer and / or boat builder are responsible to verify the usage of biodiesel compatible components on the vessel fuel supply and return systems. Free water in biodiesel may result in plugging of fuel filters and increased bacterial growth.
Biodiesel Fuels Yanmar approves the use of biodiesel fuels that do not exceed a blend of 7% non-mineral oil based fuel with 93% standard diesel fuel. Such biodiesel fuels are known in the marketplace as B7 biodiesel fuels. B7 biodiesel fuel can reduce particulate matter and the emission of “greenhouse” gases compared to standard diesel fuel. High viscosity at low temperatures may result in fuel delivery problems, injection pump seizures and poor injection nozzle spray atomization. Biodiesel may have adverse effects on some elastomers (seal materials) and may result in fuel leakage and dilution of the engine lubricating oil.
If the B7 biodiesel fuel used does not meet the approved specifications, it will cause abnormal wear of injectors, reduce the life of the engine and it may affect the warranty coverage of your engine. 26 YM Series Operation Manual DIESEL FUEL SPECIFICATION LOCATION ASTM D975 No. 2-D S15, No. 1-D S15 USA EN590-2009 European Union ISO 8217 DMX International BS 2869-A1 or A2 United Kingdom JIS K2204 Grade No. 2 Japan