This Kubota B7100HST-E Parts Catalog (OEM #100K0317) exists to do one thing: match the exact component to your tractor and serial number. Its 167 pages split into 83 pages of parts lists, 40 pages of engine breakdowns covering the crankcase, piston/crankshaft assembly, cylinder head, valve/rocker arm, nozzle holder, and injection pump, and 63 pages of drivetrain parts running from the HST unit through the rear differential and axle shafts. Hydraulic coverage fills 18 pages of diagrams and component parts: gear pump, control valve internals, lift arm, and pipe routing. Weights are spelled out too, with the complete crankshaft at 8 kgf and the STD piston at 0.304 kgf. Your serial range (B7100HST-E >=20025) is flagged on every applicable diagram, so you order the right part instead of a close guess. System bookmarks let you jump to a section and read the part number in seconds.
What's Inside This Kubota B7100HST-E Parts Manual
| System | Pages |
|---|---|
| Crankcase | 6-7 |
| Oil Pan Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 8-9 |
| Piston/Crankshaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 10-11 |
| Main Bearing Case Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 12-13 |
| Flywheel Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 14-15 |
| Cylinder Head Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 16-17 |
| Valve/Rocker Arm Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 18-19 |
| Nozzle Holder Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 20-21 |
| Nozzle Holder [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 22-23 |
| Cylinder Head Cover Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 24-25 |
| Inlet Manifold Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 26-27 |
| Exhaust Manifold Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 28-29 |
| Camshaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 30-31 |
| Gear Case Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 32-33 |
| Fuel Pump Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 34-35 |
| Injection Pump Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 36-37 |
| Injection Pump [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 38-39 |
| Speed Control Plate Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 40-41 |
| Governor Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 42-43 |
| Upper Gasket Kit Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 44-45 |
| Lower Gasket Kit Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 46-47 |
| Fan/Dynamo Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 48-49 |
| Dynamo [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 50-51 |
| Clutch Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 52-53 |
| Hydraulic Gear Pump Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 54-55 |
| Hydraulic Gear Pump [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E | 56-57 |
| Label 1 Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 58-59 |
| Air Cleaner Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 60-61 |
| Muffler Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 62-63 |
| Accelerator Rod Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 64-65 |
| Fuel Tank/Accelerator Lever Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 66-67 |
| Fuel Filter Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 68-69 |
| Radiator/Oil Cooler Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 70-71 |
| Starter Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 72-73 |
| Starter [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 74-75 |
| Battery Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 76-77 |
| Light Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 78-79 |
| Panel Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 80-81 |
| Clutch Rod Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 82-83 |
| Clutch Pedal Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 84-85 |
| Clutch Housing Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 86-87 |
| Transmission Case Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 88-89 |
| PTO Cover Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 90-91 |
| Case Cover Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 92-93 |
| HST Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 94-95 |
| HST [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 96-98 |
| Propeller Shaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 99-100 |
| 2nd Shaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 101-102 |
| 3rd Shaft/5th Shaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 103-104 |
| 4th Shaft Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 105-106 |
| Rear PTO Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 107-108 |
| Mid PTO Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 109-110 |
| Neutral Holder Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 111-112 |
| Speed Control Pedal Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 113-114 |
| Speed Change Plate Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 115-116 |
| Hi-Lo Gear Shift Lever Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 117-118 |
| PTO Gear Shift Lever Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 119-120 |
| Rear Differential Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 121-122 |
| Rear Axle Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 123-124 |
| Rear Axle Case Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 125-126 |
| Wheel Hub Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 127-128 |
| Brake Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 129-130 |
| Brake Rod/Pedal Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 131-132 |
| Front Axle Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 133-134 |
| Front Wheel Hub Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 135-136 |
| Front Drive Lever Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 137-138 |
| Front Wheel Support Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 139-140 |
| Steering Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 141-142 |
| Hydraulic Pipe 1 Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 143-144 |
| Hydraulic Pipe 2 Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 145-146 |
| Lift Arm Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 147-148 |
| Hyd.Cylinder Cap Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 149-150 |
| Control Valve Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 151-152 |
| Control Valve [Component Parts] Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 153-154 |
| 3-Point Linkage Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 155-156 |
| Hood Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 157-158 |
| Fender Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 159-160 |
| Seat Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 161-162 |
| Step Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 163-164 |
| Label 2 Tractor S.No.:B7100Hst-D >=60164 B7100Hst-E >=20025 | 165-167 |
Every system also includes accessories, brake, cooling water system, electrical system, engine, front axle, fuel system, hood/chassis, hydraulic system, labels, rear axle, speed change, steering, and transmission.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Crankcase Weight | 31 kgf | p. 7 |
| Oil Pan Weight | 1.1 kgf | p. 9 |
| Piston Weight (STD) | 0.304 kgf | p. 11 |
| Cylinder Liner Weight | 0.376 kgf | p. 7 |
| Complete Crankshaft Weight | 8 kgf | p. 11 |
| Cylinder Head Assembly Weight | 9.2 kgf | p. 17 |
| Fuel Filter Element Weight | 0.03 kgf | p. 69 |
| Radiator Assembly Weight | 6 kgf | p. 71 |
| Starter Assembly Weight | 4.7 kgf | p. 73 |
| Battery Assembly Weight | 9.3 kgf | p. 77 |
| Clutch Disk Assembly Weight | 0.93 kgf | p. 53 |
| Muffler Weight | 2.8 kgf | p. 63 |
Kubota B7100HST-E Common Problems This Manual Covers
Kubota B7100HST-E HST internal component parts unclear for rebuild, uncertain which seals match my serial number range p. 96
Open the HST Component Parts exploded view on pages 96-98; every internal sub-assembly is broken out by item number. Confirm your serial number is B7100HST-E >=20025 before ordering, then check the interchangeability guidance, which flags parts listed as new-for-old, old-for-new, or not interchangeable.
Manual Section: HST [Component Parts]Hydraulic gear pump O-rings and internal seal part numbers needed after disassembly, items don't match exploded view p. 56
Locate the Hydraulic Gear Pump Component Parts diagram on pages 56-57; each seal, O-ring, and body component is itemized by position number there. Cross-reference with the pump assembly overview on page 54 to confirm your pump body configuration. This section applies to serial numbers B7100HST-E >=20025.
Manual Section: Hydraulic Gear Pump [Component Parts]Fuel shutoff solenoid, fuse, or relay part number needed to chase no-start electrical fault, correct items unknown p. 38
Find the Panel diagram on page 80 for fuse and relay part numbers. For the fuel shutoff solenoid, check the Injection Pump Component Parts on pages 38-39; the solenoid is broken out there by item number. The starter assembly weighs 4.7 kgf; its electrical components are on pages 72-74.
Manual Section: Injection Pump [Component Parts]Oil pressure warning light stays on after startup, need part number for the pressure switch or sender p. 80
Check the Panel diagram on page 80 for warning light components and instrument sender item numbers. The oil pressure switch is part of the panel and electrical assembly covered there. Verify your tractor is in the B7100HST-E >=20025 serial range before cross-referencing substitutions.
Manual Section: PanelTransmission or hydraulic housing dripping oil at fittings, O-ring and copper washer part numbers unknown p. 143
Pull the Hydraulic Pipe 1 diagram on pages 143-144 and Hydraulic Pipe 2 on pages 145-146; O-rings and copper washers are itemized by position there. For seals at the transmission case, check pages 88-89. Verify serial number is B7100HST-E >=20025; notes which O-rings are new-for-old substitutions.
Manual Section: Hydraulic Pipe 1Frequently Asked Questions
What are the replacement specifications for Hydraulic fluid strainer?
Hydraulic fluid strainers (filters) are listed by part number. The CARTRIDGE OIL FILTER is Part No. 66021-36060, and the JOINT FILTER is Part No. 66204-36170. Physical dimensions and other detailed specs for these parts aren't included.
What are the replacement specifications for O-rings?
O-rings carry their own part numbers rather than dimensions. From the hydraulic system you'll find Part No. 04811-00220 (O RING, page 144), Part No. 04811-00180 (O RING, page 146), and Part No. 04811-00120 (O RING, page 150). Material and dimensional specs for these O-rings aren't listed.
What format is this Kubota B7100HST-E manual in?
Delivered as a 167-page searchable PDF, downloadable the moment checkout clears. Open it on a laptop, tablet, or phone and carry it straight to the shop floor.
Am I able to print pages from this Kubota B7100HST-E manual?
Absolutely. There's no DRM or copy protection, so print the whole manual or just the pages you need. Any home or office printer handles it.
Can I find hydraulic circuit diagrams in this Kubota B7100HST-E 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 scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy all text. The text throughout is crisp and easy to read, with no blurry or faded sections. Diagrams and illustrations are raster images (scanned drawings or photos) that are generally clear, and their labels are readable. Pages are mostly clean, though you may notice minor scan artifacts like small specks or faint borders on some pages. There is one filler page (page 167) explicitly stating "IMAGE NOT AVAILABLE" where a diagram would typically be.












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