Kubota B5100

Kubota B5100The Kubota B5100 is a 2WD (B5100E) or 4WD (B5100DT) sub-compact utility tractor manufactured by the Kubota in Japan from 1978 to 1984. The Kubota B5100 is equipped with a 0.5 L two-cylinder diesel engine and gear shift transmission with dry single plate type clutch (6 forward and 2 reverse gears).

The Kubota B5100 utility tractor used the Z500-A1 engine. It is a 0.5 L, 508 cm2, (31.0 cu·in) two-cylinder natural aspirated diesel engine with 68.0 mm (2.68 in) of the cylinder bore and 70.0 mm (2.76 in) of the piston stroke. This engine produced 12 PS (8.8 kW; 11.8 HP) at 3,000 rpm of maximum output power.

The Kubota B5100 is equipped with ball screw type steering, internal-expanding type brakes (right and left independent with interlock device), open operator station with two-post ROPS (Rollover protection structure) and 8.0 liters (2.1 US gal.; 1.8 Imp. gal) fuel tank.

Kubota B5100 Specifications

General Specifications
ModelKubota B5100
Length1,820 mm (71.7 in)
Width9,20 mm (36.2 in)
Height1,120 mm (44.1 in)
Wheel base1,180 mm (46.5 in)
Weight B5100E (2WD): 365 kg (805 lbs)
B5100DT (4WD): 405 kg (893 lbs)
Fuel tank capacity8.0 liters (2.1 US gal.; 1.8 Imp. gal)
Battery12V 35Ah
Cabin typeOpen operator station with two-post ROPS
Engine modelZ500-A1
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement0.5 L, 508 cm2, (31.0 cu·in)
Bore and stroke68.0 mm X 70.0 mm (2.68 in X 2.76 in)
Horsepower12 PS (8.8 kW; 11.8 HP) at 3,000 rpm
Oil capacity:2.3 L (2.43 US. qt, 2.02 Imp. qt.)
Coolant capacity:3.0 L (3.17 US. qt, 2.64 Imp. qt.)
Transmission and chassis
Chassis B5100E: 4×2 2WD
B5100DT: 4×4 MFWD 4WD
Steering typeBall screw type
BrakesInternal-expanding type, right and left independent with interlock device
Transmission model
Transmission typeGear shift with dry single plate type clutch
Gears6 forward and 2 reverse
SpeedForward: 12.8 kmh (8.0 mph) Reverse: 6.4 (4.0 mph)
Transmission oil capacity8.5 L (8.98 US. qt, 7.48 Imp. qt.)
Front tires B5100E: Ag: 4.00-9 Lawn/turf: 18×8.50-8
B5100DT: Ag: 4.50-10 Lawn/turf: 18×6.50-8
Rear tiresAg: 7.00-16 Lawn/turf: 27×8.50-15
Three-Point Hitch
Control type
Lift capacity140 kg (310 lbs)
PTO (Power take-off shaft)
Front PTO type
Front PTO spped3,000 rpm
Rear PTO typeTransmission
Rear PTO spped540/1,000 rpm
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