The Kubota B7100 is a compact utility tractor, manufactured by Kubota since 1976 to 1985. The B7100 tractor is equipped with Kubota D750-A diesel engine with 0.8 L (46.5 cu-in) of displacement and unsynchronized gear transmission with 6 forward and 2 reverse gears.
The Kubota B7100 tractor is a compact machine that measures 2,000 mm (78.7 in) in length, 1,010 mm (40.0 in) in width, and 1,150 mm (45.5 in) in height. The Kubota B7100 wheelbase is 1,250 mm (49.5 in), and it weighs 489 kg (1,080 lb). This tractor can be used as a front loader, lawnmower or snowblower.
The B7100 utility tractor used a three-cylinder liquid-cooled diesel engine Kubota D750-A with 762 cc (46.5 cu-in) of displacement. It has 68.0 mm (2.68 in) of the cylinder bore and 70.0 mm (2.76 in) of the piston stroke. Compression ratio rating is 22.0:1. The engine produced 16.2 PS (11.9 KW; 16.0 HP) at 2,800 rpm of horsepower. The oil capacity is 3.9 liters (4.1 US.qts, 3.4 Imp. qts), and the coolant capacity is 4.6 liters (4.9 US.qts, 4.0 Imp. qts). The fuel tank has a capacity of 12.9 liters (3.4 US gal, 2.8 Imp. gal), and the battery is 12V 45Ah.
The Kubota B7100 is equipped with unsynchronized gear transmission with dry plate clutch. The transmission has 6 forward (1.0-13.4 km/h, 0.6-8.3 mph) and 2 reverse (1.5-6.7 km/h, 0.9-4.2 mph) gears.
The Kubota B7100 is avalible in two versions:
- Kubota B7100E – two-wheel variant 4×2 2WD
- Kubota B7100D – four-wheel variant 4×4 4WD
The tractor used manual steering, brakes with a differential mechanical expanding shoe, open center hydraulic system and foot pedal operated the differential lock. The B7100 has open operator station.
The hydraulic lift operates at a maximum capacity of 181 kg (400 lb) at the link end, and it has a closed center hydraulic system with a capacity of 13.6 liters (3.6 US gal, 3 Imp. gal) and a flow rate of 11.4 lpm (3.0 gpm).
The front tires come in the size 6-12 for the standard options and 20.5×8.0-10 for lawn and turf while the rear tires come in the size 8-16 for standard options and 29×12.0-15 for lawn and turf tires.
The Kubota B7100 avalible attachments:
- Front-mount Kubota B222 1,210 mm (48.0 in) two-stage snowblower
- Front-moun Kubota B748 1,210 mm (48.0 in) front-mount two-stage snowblower
- Kubota B1630 loader
- Kubota B219 loader
General Specifications
| General Specifications | |
| Model | Kubota B7100 |
| Tractor type | Сompact utility tractor |
| Production years | 1990-1995 |
| Manufacturer | Kubota |
| Factory | Japan |
| Dimensions and weight | |
| Length | 2,000 mm (78.7 in) |
| Width | 1,010 mm (40.0 in) |
| Height | 1,150 mm (45.5 in) |
| Wheelbase | 1,250 mm (49.5 in) |
| Weight | 489 kg (1,080 lb) |
| Fluid capacity | |
| Fuel tank capacity | 12.9 liters (3.4 US gal, 2.8 Imp. gal) |
| Oil capacity | 3.9 liters (4.1 US.qts, 3.4 Imp. qts) |
| Coolant capacity | 4.6 liters (4.9 US.qts, 4.0 Imp. qts) |
| Front axle differential case | 0.7 liters (0.74 US.qts, 0.62 Imp. qts) |
| Front axle gear case | 0.15 liters (0.16 US.qts, 0.13 Imp. qts) |
| Hydraulic luid capacity: | 13.6 liters (3.6 US gal, 3 Imp. gal) |
| Electrical system | |
| Ground | Negative |
| Battery | 12V 45Ah |
| Cabin type | |
| Cabin type | Standard: Open operator station Optional: Two-post fixed ROPS (Rollover protection structure) |
Engine
| Engine | |
| Engine model | Kubota D750-A |
| Engine type | 4-stroke, vertical, three-cylinders |
| Displacement | 742 cm3, (45.3 cu·in) |
| Cylinder bore: | 68.0 mm (2.68 in) |
| Piston stroke: | 70.0 mm (2.76 in) |
| Compression ratio: | 22.0:1 |
| Max. horsepower | Gross: 16.2 PS (11.9 KW; 16.0 HP) at 2,800 rpm At PTO-shaft: 13.2 PS (9.7 KW; 13.0 HP) at 2,800 rpm |
| Max. torque | – |
| Cooling system | Liquid-cooled |
| Lubricating system | Forced lubrication by pump |
| Combustion chamber | Spherical type |
| Fuel injection pump | Bosch K Type Mini Pump |
| Injection type | Indirect injection |
| Injection nozzle | Bosch throttle type |
| Firing order | 1-2-3 |
| Fuel used | Diesel fuel No.2-D |
| Starting system | Electric starter (12V, 0.8 kW) |
| Starting support device | Glow plug in combustion chamber |
| Governor | Centrifugal ball mechanical governor |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
| Cylinder compression pressure | |
| Cylinder compression: | 31.5 kgf/cm2 (3.09 MPa, 448 psi) |
| Compression differential limit between cylinders: | 10% or less |
| Valve clearance | |
| Intake valve clearance: | 0.150-0.200 mm (0.006-0.008 in) |
| Exhaust valve clearance: | 0.150-0.200 mm (0.006-0.008 in) |
| Oil system | |
| Lubrication system: | Forced lubrication by pump |
| Oil type: | API CC or better |
| Oil capacity: | 3.9 liters (4.1 US.qts, 3.4 Imp. qts) |
| Oil filter: | Full flow paper filter (cartridge type) |
| Oil pressure: | At idle spped: 68 kPa (0.7 kgf/cm2, 10 psi) At rated speed: 196-441 kPa (2.0-4.5 kgf/cm2, 29-64 psi) |
| Fuel system | |
| Fuel injection pump | Bosch K Type Mini Pump |
| Injection nozzle | Bosch throttle Type |
| Injection timing: | 25° B.T.D.C. |
| Fuel injection pressure | 13.73-14.71 MPa (140-150 kgf/cm2, 1991-2133 psi) |
| Cooling system | |
| Type: | Pressurized radiator, forced circulation with water pump |
| Thermostat’s valve opening temperature: | 80.5-83.5°C (176.9-182.3°F) |
| Temperature at which thermostat completely opens: | 95°C (203°F) |
| Coolant capacity | 4.6 liters (4.9 US.qts, 4.0 Imp. qts) |
Transmission and chassis
| Transmission and chassis | |
| Chassis | B7100E: 4×2 2WD B7100D: 4×4 4WD |
| Steering | Manual type |
| Brakes | Mechanical wet disc brakes |
| Differential lock | Mechanical rear |
| Front axle differential case | 0.7 liters (0.74 US.qts, 0.62 Imp. qts) |
| Front axle gear case | 0.15 liters (0.16 US.qts, 0.13 Imp. qts) |
| Transmission type | Unsynchronized gear with dry plate type clutch |
| Gears | 6 forward and 2 reverse |
| Ground speed | Forward: 1.0-13.4 km/h, (0.6-8.3 mph) Reverse: 1.5-6.7 km/h, (0.9-4.2 mph) |
Tires
| Tires size | |
| Front tires | Standard: 6-12 Lawn and turf: 20.5×8.0-10 |
| Rear tires | Standard: 8-16 Lawn and turf: 29×12.0-15 |
PTO and 3-point linkage
| PTO (Power take-off shaft) | |
| PTO Type: | Rear, transmission |
| PTO Speed: | Rear: 540 / 750 / 1,000 rpm Front: 2,800 rpm |
| Hydraulic lift | |
| 3-point linkage: | Category I |
| Control system: | – |
| No. of remote valves: | – |
| Max lifting capacity (at link end): | 181 kg (400 lb) |
Hydraulic system
| Hydraulic system | |
| Type: | Closed center |
| Hydraulic fluid capacity: | 13.6 liters (3.6 US gal, 3 Imp. gal) |
| Hydraulic flow: | 11.4 lpm (3.0 gpm) |
Attachments
| Kubota B222: 48″ front-mount two-stage snow blower | |
| Cleaning width: | 1,210 mm (48.0 in) |
| Cleaning height: | 580 mm (23.0 in) |
| Kubota B748: 48″ front-mount two-stage snow blower | |
| Cleaning width: | 1,210 mm (48 in) |
| Kubota B1630 Loader | |
| Height (at pin) | 1,750 mm (69.2 in) |
| Lift (full at pin) | 263 kg (580 lbs) |
| Breakout | 430 kg (950 lbs) |
| Dump angle | 39° |
| Rollback angle (ground line) | 20° |
| Dump reach | 530 mm (20.9 in) |
| Ground reach | 1,190 mm (46.9 in) |
| Dump clearance | 1,370 mm (54.1 in) |
| Bucket width | 1,060 mm (42 in) 1,210 mm (48 in) 1,370 mm (54 in) |
| Kubota B219 Loader | |
| Height (at pin) | 1,860 mm (73.5 in) |
| Lift (full at pin) | 226 kg (500 lbs) |
| Dump angle | 39° |
| Dump reach | 550 mm (22.0 in) |
| Dump clearance | 1,410 mm (55.75 in) |
| Bucket width | 960 mm (38.0 in) 1,210 mm (48.0 in) |
Serial numbers
| Serial numbers (Location on clutch housing, left side) | |
| 1976 | 10001 | 1977 | 13931 | 1978 | 36646 | 1979 | 54221 | 1980 | 64448 | 1981 | 70678 | 1982 | 74217 | 1983 | 76009 | 1984 | 77309 | 1985 | 78435 |
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I need to find pivot pin & bushings for a B7100. Can you direct me how to find he information on the tractor so I can order this part?