Every part number in this Kubota B2100D Parts Catalog ties back to an exploded view, so you order once and order right. Engine coverage spans 64 pages of diagrams from crankcase to dynamo. Drivetrain takes another 48 pages across the clutch shaft, PTO shaft, rear differential, and axle cases, while 20 pages break down the hydraulics: pump internals, control valve component parts, and the full steering oil line routing. Chassis detail runs 58 pages through front and rear axles, brake pedals, the differential lock, and three front wheel options (6-12, 23×8.50-12, 21×8.00-10). The standard front rim is 6-12, the rear is 9.5-16, and the main fuse is 30A. Bookmarked by system and keyword-searchable, it opens on a tablet at the bench: tap the section and read the part number straight off the diagram, no squinting at photocopies.
What's Inside This Kubota B2100D Parts Manual
| System | Pages |
|---|---|
| Crankcase | 6-8 |
| Oil Pan | 9-11 |
| Cylinder Head | 12-13 |
| Gear Case | 14-15 |
| Head Cover | 16-17 |
| Main Bearing Case | 18-19 |
| Camshaft and Idle Gear Shaft | 20-21 |
| Piston and Crank Shaft | 22-23 |
| Flywheel | 24-25 |
| Fuel Camshaft and Governor Shaft | 26-27 |
| Stop Solenoid | 28-30 |
| Injection Pump | 31-32 |
| Injection Pump [Component Parts] | 33-34 |
| Governor | 35-37 |
| Speed Control Plate | 38-39 |
| Nozzle Holder and Glow Plug | 40-42 |
| Nozzle Holder [Component Parts] | 43-44 |
| Water Flange and Thermostat | 45-47 |
| Water Pump | 48-49 |
| Valve and Rocker Arm | 50-52 |
| Inlet Manifold | 53-54 |
| Exhaust Manifold | 55-56 |
| Upper Gasket Kit | 57-58 |
| Lower Gasket Kit | 59-60 |
| Dynamo | 61-62 |
| Dynamo [Component Parts] | 63-64 |
| Clutch | 65-66 |
| Hydraulic Pump | 67-68 |
| Hydraulic Pump [Component Parts] | 69-71 |
| Air Cleaner | 72-75 |
| Air Cleaner (Double) [Option] | 76-77 |
| Muffler | 78-79 |
| Accelerator Lever | 80-81 |
| Fuel Tank | 82-84 |
| Fuel Pipe | 85-88 |
| Fuel Filter [Component Parts] | 89-90 |
| Fan | 91-92 |
| Water Pipe | 93-94 |
| Radiator | 95-96 |
| Alternator [CA] | 97-98 |
| Alternator [Component Parts] [CA] | 99-100 |
| Starter | 101-102 |
| Starter [Component Parts] | 103-104 |
| Battery | 105-107 |
| Panel Board | 108-110 |
| Panel Board [Component Parts] | 111-112 |
| Head Light | 113-114 |
| Tail Light/Hazard Light/Working Light | 115-116 |
| Electrical Wiring | 117-118 |
| Electrical Wiring [CA] | 119-120 |
| Clutch Rod | 121-122 |
| Clutch Pedal | 123-125 |
| Clutch Housing | 126-128 |
| Frame | 129-130 |
| Transmission Case | 131-133 |
| Differential Gear Case | 134-135 |
| Rear Axle Case | 136-138 |
| Clutch Shaft/Propeller Shaft | 139-140 |
| 2nd Shaft/3rd Shaft/4th Shaft | 141-143 |
| 5Ht Shaft/PTO Shaft | 144-146 |
| Mid PTO | 147-148 |
| Rear Differential | 149-150 |
| Front Wheel Propeller Shaft | 151-152 |
| Main Gear Shift Fork | 153-155 |
| Rear Axle | 156-157 |
| Brake | 158-159 |
| Parking Brake Lever | 160-161 |
| Main Gear Shift Lever | 162-164 |
| Range Gear Shift Lever | 165-166 |
| Front Wheel Drive Lever | 167-168 |
| PTO Gear Shift Lever | 169-171 |
| Position Control Lever | 172-174 |
| Brake Pedal | 175-176 |
| Differential Lock Pedal | 177-178 |
| Front Differential | 179-181 |
| Bevel Gear Case | 182-183 |
| Front Axle Case | 184-186 |
| Front Axle | 187-188 |
| Front Drive Shaft | 189-190 |
| Drag Link | 191-192 |
| Tie Rod | 193-195 |
| Steering Handle | 196-198 |
| Steering Controller | 199-201 |
| Steering Controller [Component Parts] | 202-210 |
| Hydraulic Oil Line (Suction) | 211-214 |
| Flow Divider Valve [Component Parts] | 215-216 |
| Hydraulic Oil Line (Steering) | 217-219 |
| Hydraulic Cylinder Case | 220-222 |
| Control Valve | 223-225 |
| Control Valve [Component Parts] | 226-229 |
| Lift Rod | 230-231 |
| Lower Link | 232-233 |
| Top Link | 234-235 |
| Front Grille | 236-237 |
| Hood (Bonnet) | 238-239 |
| Side Cover | 240-241 |
| Fender | 242-243 |
| Seat Support | 244-245 |
| Seat | 246-247 |
| Step | 248-250 |
| ROPS | 251-252 |
| Front Wheel (6-12) | 253-254 |
| Front Wheel (23*8.50-12) | 255-256 |
| Front Wheel (21*8.00-10) | 257-258 |
| Rear Wheel (9.5-16) | 259-260 |
| Rear Wheel (33*12.5-15) | 261-262 |
| Rear Wheel (31*15.5-15) | 263-264 |
| Label | 265-266 |
| Accessories and Service Parts | 267-267 |
| Starter Relay Kit [Option] | 268-269 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse | 30A | p. 118 |
| Fuse Auto | 5A | p. 118 |
| Bulb Light | 27W | p. 116 |
| Front Wheel Size | 6-12 | p. 4 |
| Rear Wheel Size | 9.5-16 | p. 4 |
| Piston Oversize | +0.50mm | p. 23 |
| Metal Crankpin Undersize | -0.20mm SET | p. 23 |
| Nozzle Holder Adjusting Washer Thickness | 0.10MM | p. 44 |
| Tail Light Bulb Power Rating | 27W | p. 116 |
| Main Fuse Rating | 30A | p. 118 |
| Gear Clutch Shaft Tooth Count | 16T | p. 140 |
| Gear Reverse Tooth Count | 16-20T | p. 152 |
Kubota B2100D Common Problems This Manual Covers
Kubota B2100D won't start and clicks at key-on, stop solenoid and starter relay part numbers unknown p. 28
Check the Stop Solenoid exploded view on pages 28-30 to identify the solenoid body and connector part numbers. Cross-reference the Electrical Wiring diagram on page 117 to trace relay locations, and verify the main 30A fuse (page 118) is included in your parts order. The Stater Relay Kit on page 268 lists the complete optional relay upgrade kit.
Manual Section: Stop SolenoidBrake pedal goes soft or tractor pulls to one side, rear brake assembly part numbers needed p. 158
Pull the Brake exploded view on pages 158-159 to identify lining, cam, and spring part numbers for the rear axle assembly, then check the Brake Pedal diagram on page 175 for pedal linkage hardware. Standard rear wheel size is 9.5-16 (page 259), so confirm your axle configuration matches before ordering brake components.
Manual Section: BrakeFront wheel wobbles and shimmies at low speed, hub and bearing part numbers for 6-12 rim unclear p. 187
Match your rim against the 6-12 front wheel spec, then work the Front Axle exploded view on pages 187-188 and the Front Axle Case on page 184 to locate hub bearing, kingpin, and spindle part numbers. The Front Wheel diagram on page 253 covers rim and hub cap assembly parts.
Manual Section: Front AxleLoss of drive in one or more gears, clutch shaft and transmission component part numbers unclear p. 131
Trace the Transmission Case parts diagram on pages 131-133 and the Clutch Shaft/Propeller Shaft section on page 139 to identify gear and shaft part numbers. The clutch shaft runs a 16T gear (page 140); confirm this tooth count matches your assembly before ordering replacement shafts or shift forks on page 153.
Manual Section: Transmission CaseFrequently Asked Questions
What are the part numbers for the fuel, oil, and other filters on a Kubota B2100?
The catalog breaks out filters by function. Oil filter: 16261-32114. Fuel filter assembly: 15751-43010, with 15231-43560 as the replaceable element. The air cleaner element is 67980-82630, and the hydraulic oil filter shows up as "ASSY CARTRIDGE OIL," part number 15241-32090.
What are the replacement specifications for fuses?
Four fuse ratings show up in the wiring diagrams: 30A (1G111-65720), 5A (66426-80010), 10A (36730-75550), and 15A (35820-75560). The Canadian [CA] model swaps the 30A for a 50A fuse (17478-60080).
How quickly can I access this Kubota B2100D manual after buying?
A 269-page searchable PDF, ready to download the moment you buy. It works on any device, so you can pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Kubota B2100D Parts Catalog printable?
Yes. The PDF carries no DRM restrictions, so you can print any page or section you need for the shop. Any standard printer handles it.
Are there hydraulic schematics in this Kubota B2100D manual?
This is a parts catalog, so it shows exploded parts diagrams rather than circuit schematics. It includes detailed exploded views of the hydraulic components — pump, control valve, cylinder, and oil lines — with OEM part numbers, not wiring-style circuit diagrams.
Document Quality
This document is a scan of a physical parts book, and you can search the full text for part numbers and descriptions. The text in the parts lists is clear and easy to read, while the scanned diagrams are raster images with slightly soft lines; most labels are legible, though some smaller numbers can be a bit fuzzy when zoomed in. The pages are clean and free from any significant marks, stains, or scan artifacts, presenting the information clearly.
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