Contents
- Dimensions
- Weight
- Engine Details
- Operational Specs
- Transmission
- PTO (Power Take-Off)
- Hydraulic System
- 3-Point Hitch
- Service Refill Capacities
- Lubricants
- Serial Numbers & PIN Location
- Kubota B7100HST Attachments
- Kubota B1630C Front Loader
- Rotary Mower Decks
- Kubota B670 Backhoe
- Kubota B2030 48″ Blade
- Snow Blowers (Kubota B748 / B222)
Dimensions
| Kubota | B7100HST-E (2WD) | B7100HST-D (4WD) |
|---|---|---|
| Front Tire Size | 6.90-9 | 6-12 |
| Rear Tire Size | 8-16 | 8-16 |
| Overall Length | 84.1 in (2136 mm) | 84.1 in (2135 mm) |
| Wheelbase | 54.7 in (1390 mm) | 55.1 in (1400 mm) |
| Overall Width | 38.6 in (980 mm) | 40.9 in (1040 mm) |
| Height to Steering Wheel | 47.0 in (1195 mm) | 46.9 in (1190 mm) |
| Ground Clearance | 10.4 in (265 mm) | 9.4 in (240 mm) |
| Front Tread | 30.3 in (770 mm) | 33.3 in (845 mm) |
| Rear Tread | 28.5 in (725 mm) 30.5 in (775 mm) 32.5 in (825 mm) |
28.5 in (725 mm) 30.5 in (775 mm) 32.5 in (825 mm) |
| Turning Radius (w/ brakes) | 76.8 in (1950 mm) | 81.9 in (2080 mm) |
Weight
| Operating Weight (B7100HST-E) | 1120 lb (510 kg) |
| Operating Weight (B7100HST-D) | 1260 lb (570 kg) |
| Counterweight #1 (each) | 77 lb (35 kg) |
| Counterweight #2 (each) | 55 lb (25 kg) |
| Counterweight #3 (each) | 44 lb (20 kg) |
| Engine Weight (Dry) | 205 lb (93 kg) |
Engine Details
| Number Of Cylinders | 3 |
| Engine Make | Kubota |
| Engine Model | Kubota D750-AH |
| Displacement | 46.5 cu in (0.762 L) |
| Bore | 2.68 in (68 mm) |
| Stroke | 2.76 in (70 mm) |
| Gross Power | 16 hp (12 kw) |
| PTO Power | 13 hp (9.7 kw) |
| Power Measured @ | 2800 rpm |
| Max Torque | 37 lb ft (50 Nm) |
| Torque Measured @ | 1800 rpm |
| Combustion System | Spherical combustion chamber type |
| Fuel Injection Pump | Bosch Type K Mini Pump (NP-PF R3KD50/2NP4) |
| Fuel Nozzle | Throttle Type (ND-DN12SD12) |
| Compression Ratio | 22:1 |
| Cooling System | Liquid-cooled with pressurized radiator |
| Lubrication System | Forced lubrication by trochoid pump and full-flow micronic oil filter with bypass valve |
| Starting Support Device | Electric starter with glow plug, compression release |
| Aspiration | Naturally Aspirated |
Operational Specs
| ROPS | Open operator station with fixed ROPS |
| Operating Voltage | 12 V |
| Alternator | 10 amps / 35 amps (optional) |
| Battery | 12 V, 45 Ah, NT80-S6L |
| Starter | 12 V, 1.1 hp (0.8 kw) |
| Front Tire Size (Ag) | 6-12; 6.90-9; 4.00-9 |
| Rear Tire Size (Ag) | 8-16 |
| Front Tire Size (Lawn/turf) | 20.5×8.00-10 |
| Rear Tire Size (Lawn/turf) | 29×12.00-15 |
| Steering | Ball screw type, manual steering |
| Differential Lock | Mechanical, rear |
| Drive | 2WD or 4WD |
Transmission
| Type | Hydrostatic transmission HST |
| Hydrostatic Pump Type | Variable displacement piston pump |
| Hydrostatic Motor Type | Fixed displacement piston motor |
| Charge Pump Type | Trochoid pump |
| Charge Pump Flow | 3.6 gal/min (13.7 L/min) |
| Hydrostatic Motor Flow | 12.1 gal/min (45.9 L/min) |
| Number of Gears | Infinite forward and reverse (2-range) |
| Max Forward Speed | 9.0 mph (14.5 km/h) |
| Max Reverse Speed | 6.2 mph (10.0 km/h) |
| Service Brakes | Right and left independent with dry drum |
| Parking Brake | Hook-interlocked with main brake |
PTO (Power Take-Off)
| PTO Type | Transmission. Front – direct to crankshaft (optional) |
| PTO Power | 13 hp (9.7 kw) |
| Rear PTO Speed | 540 / 850 rpm |
| Rear PTO Size | 1.875 in, 6 spline |
| Mid PTO Speed | 2450 rpm |
| Mid PTO Size | Involute spline SAE No. 5 |
Hydraulic System
| Type | Closed center |
| Control | Spool sliding |
| Pump Type | Gear pump (GP-OB-9.6-3127C) |
| Main Pump Flow | 3 gal/min (11.2 L/min) |
| Max System Pressure | 1710 psi (11800 kPa) |
3-Point Hitch
| 3-Point Hitch Type | Category I |
| 3 Point Hitch Lift Capacity @ 24 in | 1000 lb (450 kg) |
Service Refill Capacities
| Fuel Tank Capacity | 3.4 gal (13 L) |
| Engine Oil Capacity (w/ Filter) | 1 gal (3.9 L) |
| Cooling System Capacity | 1.2 gal (4.6 L) |
| Hydraulic / Transmission Oil Capacity | 3.6 gal (13.5 L) |
| Steering Gearbox Capacity | 0.05 gal (0.2 L) |
| Front Differential Fluid Capacity | 0.4 gal (1.5 L) |
| Front Wheel Axle Case (each side) | 0.16 gal (0.5 L) |
Lubricants
Engine oil API Service Class CC or CD
| Engine Oil, Above 25° C (77° F) | SAE 30 or 10W-30 |
| Engine Oil, 0-25° C (32°-77° F) | SAE 20 or 10W-30 |
| Engine Oil, Below 0° C (32° F) | SAE 10W or 10W-30 |
| Steering Gearbox | SAE 80 Gear Oil |
| Front Differential Case | SAE 80 Gear Oil |
| Front Wheel Gear Case | SAE 80 Gear Oil |
| Hydrostatic Transmission Oil | Kubota – UDT oil / Shell – DONAX-TD, DONAX-TM / Mobil – Mobil Fluid 350, 423 / Exxon – Torque Fluid 56 |
Serial Numbers & PIN Location
The serial number of the Kubota B7100HST tractor is located on the left side of clutch housing.
| Year | Serial Number | Year | Serial Number |
|---|---|---|---|
| 1977 | … | 1983 | 51426 |
| 1980 | 10157 | 1984 | 53433 |
| 1981 | 11035 | 1999 | 6XXXX |
| 1982 | 13305 | 2000 | … |
Kubota B7100HST Attachments
The Kubota B7100HST compact utility tractor offers a versatile platform for a wide range of attachments, making it well-suited for landscaping, gardening, snow removal, and light construction tasks. With factory-compatible implements designed for seamless integration, operators can tackle multiple seasonal and year-round jobs efficiently. Popular attachments for the B7100HST include 48″, 54″ and 60″ mid-mount mower decks like the MR4800, RC54-71 and RC60-71 for precision cutting, as well as the rugged B2030 front blade for grading and clearing. For lifting and loading, the Kubota B1630C front-end loader delivers reliable performance, while the B670 backhoe adds trenching and excavation capability. Winter-ready options include 48″ front snow blowers – Kubota’s single-stage B748 and two-stage B222 – offering powerful snow clearing for residential or commercial needs.
Kubota B1630C Front Loader
| Model | Kubota B1630C Loader |
|---|---|
| Lift Capacity (full at pin) | 510 lb (231 kg) |
| Breakout Force | 780 lbf (353 kgf) |
| Dump Angle | 46° |
| Reach (dumped) | 20.25 in (510 mm) |
| Reach (ground) | 48.3 in (1220 mm) |
| Rollback Angle | 28° |
| Height (at pin) | 67.7 in (1710 mm) |
| Clearance (dumped) | 51.5 in (1300 mm) |
| Boom Cylinder | 1.50 in (30 mm) |
| Boom Rod | 1.12 in (20 mm) |
| Bucket Cylinder | 1.50 in (30 mm) |
| Bucket Rod | 1.00 in (20 mm) |
| Bucket Width | 48 in (1210 mm) |
Rotary Mower Decks
| Model | Kubota MR4800 Mower Deck | Kubota RC60-71 Mower Deck |
|---|---|---|
| Mount Type | Mid-mount (Pantograph linkage) | Mid-mount (Pantograph linkage) |
| Adjustment of Cutting Height | Gauge | Gauge |
| Lift Mechanism | Raised and lowered via 3-point hitch linkage | Raised and lowered via 3-point hitch linkage |
| Cutting Width | 48 in (1220 mm) | 60 in (1520 mm) |
| Cutting Height | 1.5 to 4 in (38 to 102 mm) | 1 to 4 in (25 to 102 mm), adjustable in increments |
| Weight | Approx. 220 lb (100 kg) | Approx. 235 lb (107 kg) |
| Blade Spindle Speed | 3270 rpm | |
| Blade Tip Velocity | 14300 fpm (72.64 m/s) | |
| Blade Length | 16,7 in (424 mm) | 20.6 in (522 mm) |
| Number of Blades | 3 | 3 |
| Total Length | 34.3 in (872 mm) | Approx. 41 in (1040 mm) |
| Total Width | 60.4 in (1535 mm) | Approx. 72 in (1829 mm) |
| Total Height | 12.7 in (323 mm) | 12 in (305 mm) |
Kubota B670 Backhoe
| Model | Kubota B670 Backhoe |
|---|---|
| Transport Height | 61 in (1540 mm) |
| 2-Foot Flat Digging Depth | 73 in (1850 mm) |
| Reach from Pivot | 100 in (2540 mm) |
| Loading Height | 60 in (1520 mm) |
| Bucket Rotation | 180° |
| Swing Arc | 180° |
| Bucket Force | 2400 lb (1088 kg) |
| Bucket Width | 9 in (220 mm) / 13 in (330 mm) / 16 in (400 mm) |
| Weight | 750 lb (340 kg) |
Kubota B2030 48″ Blade
| Model | Kubota B2030 Front Blade |
|---|---|
| Mount Type | Front-mount |
| Blade Type | Hydraulic lift, manual angle |
| Width | 48 in (1210 mm) |
| Height | 17.5 in (440 mm) |
| Lift | 9.8 in (240 mm) |
| Angling | 30° |
| Cut | 5.6 in (140 mm) |
| Weight | 315 lb (142 kg) |
Snow Blowers (Kubota B748 / B222)
| Model | Kubota B748 | Kubota B222 |
|---|---|---|
| Type | Single-stage | Two-stage |
| Mount Type | Front-mount | Front-mount |
| Width | 48 in (1210 mm) | 48 in (1210 mm) |
| Clear Height | – | 23 in (580 mm) |
