Part of the Kubota Parts Manuals.
This is the Kubota BX23D parts catalog, an illustrated breakdown of the compact tractor loader-backhoe with exploded diagrams and the exact Kubota part numbers for every assembly. It matches factory publication number 100K0805 and covers the BX23D built from 2003 to 2009.The catalog is organized by system, covering the engine, fuel, and cooling groups, the full electrical system (starter, dynamo, battery, wiring, switches, and lights), the transmission and HST, rear and front axles, steering, the hydraulic pump and lift components, plus wheels, labels, and accessories.Use it to identify the right part before you order, confirm quantities and reference numbers, and understand how each assembly fits together. Serial number ranges and interchangeability notes are listed throughout all 285 pages so you can match parts to your specific machine.
What's Inside This Kubota BX23D Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Clutch & Transmission | Transmission Case, Range Gear Shift Fork, PTO Gear Shift Fork, PTO Gear Shift Arm, Differential Lock Shift Fork, Neutral Holder Link, Range Gear Shift Lever, PTO Gear Shift Lever | |
| Fuel System | Idle Apparatus, Nozzle Holder and Glow Plug, Nozzle Holder, Fuel Tank, Fuel Pipe, Stop Solenoid, Speed Control Pedal | |
| Cooling System | Fan, Water Pipe, Radiator | |
| Engine | Crankcase, Cylinder Head, Head Cover, Inlet Manifold, Upper Gasket Kit, Engine Support, Hydraulic Piston/Lift Arm | |
| Electrical System | Dynamo, Starter, Battery, Panel Board, Switch/Sensor, Head Light, Hazard Light/Tail Light, Winker Lamp, Electrical Wiring, Alternator Kit, Alternator, Working Light Kit | |
| Undercarriage & Travel | Steering Controller | |
| PTO | PTO Select Lever, PTO Protector | |
| Rear Axle, Differential & Brakes | Rear Axle Case, Rear Axle, Brake, Brake Pedal, Front Axle Case, Rear Wheel | |
| Front Axle & Steering | Front Wheel Drive Lever, Front Axle, Steering Handle, Steering Linkage, Steering Cylinder, Front Wheel | |
| Hydraulics & 3-Point Hitch | Hydraulic Control Lever, Hydraulic Pump, Hydraulic Oil Line, Hydraulic Cylinder, Control Valve, Top Link | |
| Body & Operator Station | Front Frame, Sub Frame, Bonnet, Seat Support, Seat, Smv Emblem | |
| Decals & Accessories | Label, Accessories and Service Parts | |
| Other Components | Spacer Kit |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse current rating | 15A | p. 117 |
| Shim Injection Pump Thickness | 0.20mm | p. 40 |
| Washer Adjusting Thickness | 0.10mm | p. 50 |
| Fuse (Electrical Wiring) | 15A | p. 117 |
| Gear (Clutch Shaft/Output Shaft) | 13T | p. 129 |
| Shim (Rear Differential) | 0.6mm | p. 143 |
| Gear Bevel (Front Axle) | 36T | p. 190 |
| Bulb (Working Light) | 35W | p. 281 |
Kubota BX23D Common Problems This Manual Covers
Engine cranks but will not start
A common no-start cause on the BX23D is a failing fuel shutoff (stop) solenoid that never lets fuel reach the engine. The stop solenoid group shows the assembly and its part numbers for replacement.
Manual Section: Stop Solenoid p. 92Slow or no crank from the starter
Owners report the starter getting insufficient voltage so the tractor will not turn over reliably. The starter group breaks down the unit and its components so you can order the right replacement.
Manual Section: Starter p. 99Weak cranking from a tired battery
Low voltage at the starter often traces back to the battery and its cables. The battery group identifies the battery, hold-down, and cable parts for the BX23D.
Manual Section: Battery p. 103Intermittent electrical faults or blown fuse
No-start and dead-circuit troubleshooting frequently points to fuses, relays, and wiring connections. The electrical wiring group shows the harness, fuse, and connectors so you can trace and replace the failed part.
Manual Section: Electrical Wiring p. 116HST or drive performance drops
Neglected service can restrict the transmission filter screen and hurt HST flow. The transmission case group covers the HST and its component parts to help you locate the right filter and drive components.
Manual Section: Transmission Case p. 124Charging problems from the dynamo
A battery that keeps going flat can mean the dynamo is not charging. The dynamo group and its component parts list the pieces needed to rebuild or replace the unit.
Manual Section: Dynamo p. 94Frequently Asked Questions
What exactly is included in this catalog?
This is a Kubota BX23D parts catalog: exploded diagrams paired with the factory part numbers, quantities, and reference numbers for every assembly on the tractor. It is a parts reference, not a repair procedure manual.
Can I order parts using this manual?
Yes. Each diagram lists the genuine Kubota part number, quantity, and reference number, plus serial number ranges and interchangeability notes, so you can identify and order the correct part with confidence.
Does it show the starting and electrical parts?
Yes. The starter group breaks the unit down into its component parts, and separate groups cover the battery, dynamo, wiring, switches, and lights for the BX23D. p. 99
Are the transmission and HST components covered?
Yes. The transmission case group covers the HST and its component parts, range gear shafts, PTO shafts, and rear axle case, all keyed to Kubota part numbers. p. 124
Is this Kubota BX23D Parts Catalog a digital download?
A 285-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View it on computer, tablet, or phone, with no shipping wait.
Can I print this manual?
Yes. The PDF carries no DRM restrictions, so you can print any page or section you need for the shop. It works with any standard printer.
Can I find hydraulic circuit diagrams in this Kubota BX23D manual?
No. Complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are not included; the manual carries parts diagrams for the hydraulic systems.
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