2007 Kubota B2320 / B2620 / B2920 / B2320NARROW Tractor Operator's Manual (P/N 6C300-6311-6)

This 2007 Kubota operator's manual (Code No. 6C300-6311-6) provides guidance for the daily operation and routine maintenance of the B2320, B2620, B2920, and B2320NARROW compact tractors, covering both HST and manual transmission variants.

• Controls and safety checks: Instrument panel identification, Easy Checker(TM) warning indicators, Operator Presence Control (OPC) testing, engine-start interlock checks, and PTO operation.

• Hydraulics and implements: 3-point hitch adjustment, position and quarter-inching control, auxiliary hydraulic outlets, optional dual remote valve connections, and implement limitations.

• Engine and fuel service: Engine oil and filter changes, air cleaner maintenance, fuel filter cleaning and replacement, and bleeding the diesel fuel system.

• Cooling system: Radiator screen cleaning, hose and clamp inspections, fan belt tension adjustment, cooling-system flushing, and coolant replacement.

• Drivetrain maintenance: Adjusting clutch and brake pedal free travel, changing transmission fluid, replacing HST and hydraulic oil filters, and servicing the front axle.

• Wheels and ballast: Tire inflation tables, model-specific wheel tread information, wheel hardware torque specifications, front weights, and rear ballast configurations.

Written for tractor owners and operators, it explains regular maintenance while directing major service and repair work to a Kubota dealer.

Model and Transmission Differences

The specification tables identify the E-TVCS, liquid-cooled, 3-cylinder diesel engines: D1005-E3-D22 for the B2320 variants, D1105-E3-D22 for B2620HSD, and D1305-E3-D22 for B2920HSD.

B2320DTN-1, called B2320DTN in the operating sections, and B2320DT use a manual transmission with nine forward and three reverse speeds. The HST variants use three travel ranges. Separate Foot and Hand Controls illustrations show the different layouts, and the engine-start tests distinguish the manual gear-selector switch from the HST speed-control pedal switch.

Hydraulic Controls and Implement Setup

The narrow B2320DTN and B2320HSDN use position control; the other covered variants use a quarter-inching valve. The Hydraulic Control Unit Use Reference Chart links implement types to top-link mounting holes and check-chain settings, helping you select the appropriate hitch setup for the attachment.

The optional dual remote hydraulic control system section explains loader valve operation, hose connections, float, and regeneration. Its connection diagrams and color-coded coupler table distinguish cylinder ports; the manual warns that an unsuitable hydraulic motor connection can damage motor seals when regeneration is selected.

The valve lock does not prevent implement leak-down and must not be relied on to support a raised attachment during maintenance or repair.

PTO, Wheels and Ballast

Operational documentation covers rear and mid-PTO selection, stationary PTO use, differential lock pedal engagement, and the HST speed set device. Foldable ROPS instructions exclude the B2320DTN and B2320HSDN.

Wheel tread width adjustments apply to the narrow models' rear wheels. Front tread is fixed, as is rear tread on the other covered models. Tire tables distinguish USA and non-USA configurations.

Ballast guidance separates front-end weights from liquid ballast in the rear tires, with optional rear wheel weights for the narrow models. Liquid ballast is prohibited in the front tires. Implement limitations include drawbar loads and restrictions for front-end loaders and other attachments.

Periodic Service and Troubleshooting

The Service Intervals and Lubricants, Fuel and Coolant tables provide maintenance schedules, fluid specifications, and model-specific capacities. Engine oil quantities include the filter and differ by engine model; transmission quantities distinguish manual and HST configurations.

Illustrated procedures cover adjusting the 4WD front axle pivot and draining and replacing front axle case oil. HST transmission filter replacement is documented separately from hydraulic oil filter replacement. The fuel service notes explain how contamination can cause premature wear in the fuel pump and injection nozzles.

The Engine Troubleshooting table connects hard starting, low power, sudden stopping, exhaust smoke, and overheating with likely causes and corrective measures. Electrical coverage includes battery care, wiring inspections, fuse locations, and the Protected circuit table.

This is an operator and maintenance reference, not a workshop manual for internal engine or transmission repair. Valve-clearance adjustment, injection-nozzle pressure testing, and injection-pump checks are referred to a Kubota dealer. Electrical wiring schematics are not included.

PDF Text Search and Navigation

The printable English PDF has searchable main text and embedded bookmarks for sections and individual service topics; the cover and some illustrated labels are outside text search. The 88-page PDF includes one combined front-and-back cover page, seven preliminary pages, eight Safe Operation pages, and 72 numbered main pages; all are included in the total.