Husqvarna HUV 4421-D / DXP owner manual Draining Water from Fuel Filter, Diesel Vehicles Only

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Fueling Instructions

If biodiesel is used, be sure to apply the following guidelines:

•Ensure the fuel tank is as full as possible at all times to prevent moisture from collecting.

•Ensure that the fuel tank cap is securely tightened to prevent water from entering the fuel tank.

•Drain all water from the fuel filter daily before operating vehicle. See Draining Water from Fuel Filter.

•Check the engine oil level daily before the engine is started. See Engine Oil Level Check on page 35.

•Before vehicle storage, run the engine with conventional diesel fuel for at least 30 minutes to flush the biodiesel from the engine. See Preparing the Vehicle for Extended Storage on page 26. See fol- lowing NOTE.

NOTE: Biodiesel does not have long-term stability and must not be left in engines longer than three months. This fuel type attracts moisture and may contain higher water content than conventional diesel fuel.

Fuel system maintenance, cleaning, and fuel line replacement are required more frequently for engines that are operated with biodiesel.

DRAINING WATER FROM FUEL FILTER

Diesel Vehicles Only

Water should be drained from the fuel filter daily. The fuel filter is mounted on a plate by the lower seat support panel (Figure 38).

1.Position a pan under the fuel filter.

2.Lift the passenger-side seat.

3.Locate the valve (1) on the underside of the filter. Turn the valve clockwise until water begins to stream from the filter.

4.Drain the water until it changes color (to fuel). See following WARNING.

ýWARNING

•Clean up spilled fuel. Keep sparks and flames away from the vehicle and service area. Failure to heed this warning could result in an explosion or fire, resulting in severe personal injury or death.

5.Close the valve by rotating it counterclockwise until the valve is firmly sealed.

6.To resupply the filter with fuel, turn the key switch to the ON position for 10 seconds. See following

NOTE.

NOTE: Dispose of water according to the environmental laws and regulations for your area.

2007 HUV 4421 Gasoline and Diesel Vehicle Owner’s Manual

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Contents 2007 Utility Vehicles Page USA Foreword Table of Contents ALL HUV 4421 Models DRIVER/PASSENGER Warning Decal Rotating Parts Decal Diesel Vehicle Feature Identification Caut ION Safety DetailsDAN G E R Caut ION DAN G E R General WarningsAll-wheel Drive Warning See General Warnings on Controls and IndicatorsGeneral Information Model IdentificationControls and Indicators Accelerator Pedal KEY Switch Gasoline VehiclesKEY Switch Diesel Vehicles FORWARD/REVERSE ControlPark Brake Steering Adjustment LockVolt Accessory Outlet Brake PedalHeadlight Control HIGH-TEMPERATURE Warning Light Diesel Vehicles onlyLOW OIL Warning Light Fuel GAUGE/HOUR MeterRelease Safety Belt ROLL-OVER Protective Structure and Safety BeltsING Seat Latch and AdjustmentExhaust system Check for leaks PRE-OPERATION and Daily Safety ChecklistDriving Instructions Performance InspectionStarting the Vehicle ALL-WHEEL Drive AWD Operation Parking and Leaving the Vehicle BED Latch and Prop RODStopping the Vehicle Bed Latch Loading and Unloading CargoVehicle Load Capacities Transporting on a Trailer Towing with the VehicleSee General Warnings on DAN G E R StorageOFF Preparing the Vehicle for Extended StorageGasoline vehicles Returning the Stored Vehicle to ServiceMaintenance MaintenancePeriodic Service Schedule Periodic Service ScheduleMonthly service by owner Annual service by Periodic Lubrication Schedule Periodic Lubrication ScheduleLubrication Points Gasoline Vehicles OIL Pressure Gasoline Engine Brake Fluid ReservoirEngine OIL Brake FluidDo not remove dipstick while engine is running Engine OIL Level CheckEngine Oil Draining Engine OIL and Filter ChangeDrain the engine oil. See Engine Oil Draining on Engine Oil Filter ChangeRemove Engine Oil Filter OIL Viscosity Engine Oil FillingFront differential Gearcase LubricationRear differential TransmissionEngine Coolant Level Check AIR Filter ReplacementEngine Coolant Diesel Vehicles AIR Intake SystemAir Filter Removal Air Filter InstallationFueling Instructions Fuel Tank Gasoline Vehicles Biodiesel Fuel Diesel Vehicles OnlyDiesel Vehicles Only Draining Water from Fuel FilterFuel Filter BatteryBattery Jump Starting Using a Booster Battery Jump StartingSee following Note Cleaning the VehicleAccessories Electric Winch AccessoryMUD Tire Option Subsequent Owner RegistrationSpecifications Vehicle SpecificationsDIMENSIONS/WEIGHT Tire Pressure Warranty Information Oxygenated Fuels Technical & Consumer Information Gasoline EnginesCarburetor Modification for High Altitude Operation Maintenance U.S. and California Clean Air ActsProblems That May Affect Emissions Replacement PartsYour Warranty Rights and Obligations California Emission Control Warranty StatementPage Page Page Husqvarna Part Number 531 30 Edition Code 0706C0307B