BIODIESEL FUEL (BDF)
B0-B5 Biodiesel fuels (BDF): mixed diesel fuels containing 5 % or less biodiesel can be utilized under the following
conditions.
IMPORTANT :
• Refueling and handling fuel should be done with caution in order to avoid contact with the fuel and
spillage that could create a potential environmental or fire hazard. Wear appropriate protective equipment
when refueling.
Applicable BDF:
1. BDF concentration must not exceed 5 % by volume (B5 blend). Greater concentrations increase the likelihood of
corrosion and failure of the aluminum, zinc, rubber, and plastic parts of the fuel system.
2. Any mineral oil diesel fuel, if used, must conform to ASTM D975 (or the European EN590) Standard, as revised.
B100 fuel used to make biodiesel blended fuels must meet ASTM D6751 (or EN14214) Standard, as revised.
Straight vegetable oil is not allowed in any blended fuel.
3. Kubota strongly recommends that B5 blend be purchased from a BQ-9000 accredited producer or certified
marketer.
Kubota discourages local blending of BDF, because it is difficult to meet the quality requirements explained above.
Product warranty, emission and other precautions:
1. The engine emission control system was certified according to current regulations based on the use of non-BDF.
When using BDF, the owner is advised to check applicable local and federal emission regulations and comply with
all of them.
2. BDF may cause restricted or clogged fuel filters during cold weather conditions, resulting in the engine not
operating properly.
3. BDF encourages the growth of microorganisms which may cause degradation of the fuel.
This in turn may cause fuel line corrosion or reduce fuel filter flow earlier than expected.
4. BDF inherently absorbs moisture which may cause degradation of the fuel earlier than expected.
To avoid this, drain the water separator and fuel filter port often.
5. Do not use biodiesel concentrations higher than 5 % (i.e. greater than B5).
Engine performance and fuel consumption will be affected, and degradation of the fuel system components may
occur.
6. Do not readjust the engine fuel control system as this will violate emission control levels for which the equipment
was approved.
7. Compared with soybean-based and rapeseed-based feedstock, palm oil-based feedstock has a thicker
consistency (i.e. higher viscosity) at lower temperatures.
Consequently, fuel filter performance may be reduced, particularly during cold weather conditions.
8. The Kubota warranty, as specified in the owner's warranty information guide, only covers defects in product
materials and workmanship. Accordingly, any problems that may arise due to the use of poor quality fuels that fail
to meet the above requirements, whether biodiesel or mineral oil based, are not covered by the Kubota warranty.
Routine handling:
1. Avoid spilling BDF onto painted surfaces as this may damage the finish.
If fuel is spilled immediately wipe clean and flush with soapy water to avoid permanent damage.
2. When using BDF, you are advised to maintain a full tank of fuel, especially overnight and during short term
storage, to reduce condensation within the tank. Be sure to tighten the fuel cap after refueling to prevent moisture
build up within the tank. Water in the biodiesel mixture will damage fuel filters and may damage engine
components.
3. Follow the oil change intervals recommended by referring to the MAINTENANCE INTERVALS on page 92
section.
Extended oil change intervals may result in premature wear or engine damage.
Long term storage:
1. BDF easily deteriorates due to oxygen, water, heat and foreign substances. Do not store longer than 3 months.
2. When using B5 fuel and storing machine longer than 3 months, drain the fuel from the tanks and replace with light
mineral oil diesel fuel. Subsequently, run the engine at least 30 minutes to remove all of the biodiesel from the fuel
lines.
BIODIESEL FUEL (BDF)
RECOMMENDED OILS
R540
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