Husqvarna HUV 4421-G / GXP Biodiesel Fuel Diesel Vehicles Only, Caut Ion, Fueling Instructions

Models: HUV 4421-D / DXP HUV 4421-G / GXP

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2.Replace the fuel cap. Ensure that the cap is tightened securely.

Fueling Instructions

NOTE: Gasoline vehicles: Use unleaded gasoline only. Whenever possible, avoid using oxygenated fuels and fuels that are blended with alcohol.

Diesel vehicles: Use only diesel fuel grade no. 2 with a cetane rating of 45 or higher.

2.Replace the fuel cap. Ensure that the cap is tightened securely.

3.Clean any spilled fuel from the cap or around the fuel cap area.

TO FUEL

 

FILTER

FUEL SHUT-

 

 

OFF VALVE

 

VENT

Figure 36 Fuel Tank – Gasoline Vehicles

TO FUEL

FILTER

VENT

Figure 37 Fuel Tank – Diesel Vehicles

Biodiesel Fuel (Diesel Vehicles Only)

Biodiesel has unique qualities that should be considered before it is used in the Kubota D722 diesel engine. During cold weather, plugged fuel lines, plugged fuel systems, hard starting, and other unknown failures can result from use of this fuel.

Biodiesel is an excellent medium for microbial growth and contamination. Microbial contamination can cause corrosion of the fuel system and prematurely plugged fuel filters. See following NOTE.

NOTE: Use of biodiesel may result in premature failure of fuel system components. Kubota has docu- mented problems such as plugged fuel filters and deteriorated fuel lines during testing of biodiesel.

Biodiesel can damage painted surfaces. Be sure to remove all spilled fuel immediately to help prevent dam- age to painted surfaces.

If biodiesel will be used in the Kubota D722 engine, be sure that it meets the following requirements:

The fuel blend should contain no more than 5% biodiesel by volume.

The petroleum portion of the fuel blend must meet ASTM standard D975 and the biodiesel portion of the fuel blend must meet ASTM standard D6751.

For Europe, the fuel blend must meet the EN590 standard. See following CAUTION.

CAUT ION

Never use any fuel that does not meet specifications or fuel in which the contents cannot be identified. Using blends higher than 5% biodiesel content can affect engine life and cause deterioration of hoses, tubelines, injectors, injector pump and seals.

For more information on these fuel standards, please contact your nearest Kubota dealer.

Page 44 2007 HUV 4421 Gasoline and Diesel Vehicle Owner’s Manual

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Husqvarna HUV 4421-G / GXP, HUV 4421-D / DXP Biodiesel Fuel Diesel Vehicles Only, Caut Ion, Fueling Instructions