Find the exact part number before you waste a trip to the dealer. This Kubota B3030HSD Parts Catalog runs through every major system with exploded-view parts lists: 150 pages of them, 32 covering the engine alone. The engine breakdown includes the crankcase (47 kgf), cylinder head (12.1 kgf), injection pump, governor, nozzle holders, and both upper and lower gasket kits. hydraulic parts diagrams trace the full oil circuit, from suction and delivery lines to the HST circuit, steering cylinder, control valve internals, relief valve, and PTO valve. The electrical section maps the 30A main fuse, 10A and 5A branch fuses, starter components, and panel board. A 48-page drivetrain chapter covers the HST, rear differential, PTO clutch, range gear, and front axle. Stop reading worn castings and guessing. Everything is bookmarked and searchable, so you can pull it up on your phone, jump to the system you need, and order right the first time.
What's Inside This Kubota B3030HSD Parts Manual
| System | Pages |
|---|---|
| Crankcase | 6-7 |
| Oil Pan | 8-9 |
| Cylinder Head | 10-11 |
| Head Cover | 14-15 |
| Oil Filter | 16-17 |
| Dipstick and Guide | 18-19 |
| Main Bearing Case | 20-21 |
| Camshaft and Idle Gear Shaft | 22-23 |
| Piston and Crankshaft | 24-25 |
| Flywheel | 26-27 |
| Fuel Camshaft and Governor Shaft | 28-29 |
| Idle Apparatus | 30-31 |
| Injection Pump | 32-33 |
| Governor | 34-35 |
| Speed Control Plate | 36-37 |
| Nozzle Holder and Glow Plug | 38-39 |
| Nozzle Holder [Component Parts] | 40-41 |
| Fuel Pump (Mechanical) | 42-43 |
| Dynamo | 44-45 |
| Dynamo [Component Parts] | 46-47 |
| Water Flange and Thermostat | 48-49 |
| Water Pump | 50-51 |
| Valve and Rocker Arm | 52-53 |
| Inlet Manifold | 54-55 |
| Exhaust Manifold | 56-57 |
| Air Cleaner | 58-59 |
| Muffler | 60-61 |
| Hydraulic Pump | 62-63 |
| Hydraulic Pump [Component Parts] | 64-65 |
| Upper Gasket Kit | 66-67 |
| Lower Gasket Kit | 68-69 |
| Accelerator Lever | 70-71 |
| Acceleraotr Rod | 72-73 |
| Fuel Tank | 74-75 |
| Fuel Pipe | 76-77 |
| Fuel Filter [Component Parts] | 78-79 |
| Fan | 80-81 |
| Water Pipe | 82-83 |
| Radiator | 84-85 |
| Reserve Tank | 86-87 |
| Stop Solenoid | 88-89 |
| Starter | 90-91 |
| Starter [Component Parts] | 92-93 |
| Battery | 94-95 |
| Switch | 96-97 |
| Panel Board | 98-99 |
| Panel Board [Component Parts] | 100-101 |
| Head Light | 102-103 |
| Hazard Light | 104-105 |
| Tail Light | 106-107 |
| Winker Lamp | 108-109 |
| Electrical Wiring | 110-111 |
| Clutch Housing | 112-113 |
| Transmission Case | 118-119 |
| Rear Axle Case Lh | 122-123 |
| Rear Axle Case Rh | 124-125 |
| Clutch Shaft | 126-127 |
| PTO Clutch Shaft | 146-147 |
| PTO Clutch | 148-149 |
| Range Gear Shift Fork | 156-157 |
| PTO Gear Shift Arm | 158-159 |
| Differential Lock Shift Fork | 160-161 |
| Rear Axle | 162-163 |
| Brake | 164-165 |
| Brake Rod | 166-167 |
| Parking Brake Lever | 168-169 |
| Cruise Control Lever | 170-171 |
| Cruise Control Base | 172-173 |
| Cruise Control Clutch | 174-175 |
| Speed Control Pedal | 176-177 |
| HST Release Rod | 178-179 |
| Range Gear Shift Lever | 180-181 |
| Front Wheel Drive Lever | 182-183 |
| PTO Gear Shift Lever | 184-185 |
| Position Control Lever | 186-187 |
| Brake Pedal | 188-189 |
| Front Axle Frame | 192-193 |
| Front Axle Case | 194-203 |
| Front Axle | 204-205 |
| Steering Handle | 208-209 |
| Steering Post | 210-211 |
| Steering Controller | 214-215 |
| Steering Linkage | 216-217 |
| Steering Cylinder [Component Parts] | 218-219 |
| Hydraulic Oil Line (Suction) | 220-221 |
| Hydraulic Oil Line (Delivery) | 222-223 |
| Hydraulic Oil Line (Steering) | 224-225 |
| Hydraulic Oil Line (HST) | 226-227 |
| Hydraulic Oil Line (Oil Cooler) | 228-229 |
| Hydraulic Cylinder | 230-231 |
| Hydraulic Piston/Lift Arm | 232-233 |
| Feed Back Lever | 234-235 |
| Control Valve [Component Parts] | 238-239 |
| Relief Valve | 240-241 |
| PTO Valve | 242-243 |
| PTO Valve [Component Parts] | 244-245 |
| 3-Point Linkage 2 (Lift Rod) | 246-247 |
| 3-Point Linkage 1 (Top Link) | 252-253 |
| PTO Protector | 256-257 |
| Bonnet | 260-261 |
| Rops (Rigid Type) | 282-283 |
| Rops (Foldable Type) | 284-285 |
| Front Wheel (7-12) | 288-289 |
| Front Wheel (23*8.50-14R4) | 290-291 |
| Front Wheel (24*8.50-14) | 292-293 |
| Rear Wheel (12.4-16) | 294-295 |
| Rear Wheel (12.4-16R4) | 296-297 |
| Rear Wheel (13.6-16) | 298-299 |
| Label [English] | 300-301 |
| Label [French] | 302-303 |
| Accessories and Service Parts | 304-305 |
| Alternator Kit [Option] | 306-307 |
| Alternator [Component Parts] [Option] | 308-309 |
| Working Light Kit [Option] | 310-311 |
| Auxiliary Control Valve [Option] | 312-313 |
| Auxiliary Control Valve (Floating) [Option] | 314-315 |
| Auxiliary Control Valve Lever (1st) [Option] | 316-317 |
| Auxiliary Control Valve Lever (2nd) [Option] | 318-319 |
| Auxiliary Control Valve Coupler (1st) [Option] | 320-321 |
| Auxiliary Control Valve Coupler (2nd) [Option] | 322-323 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Weight | 0.28 kgf | p. 89 |
| Fuse Amperage | 30A | p. 111 |
| Key Starter Type | 2P/SET | p. 99 |
| CRANKCASE Weight | 47 kgf (103.4 lb) | p. 7 |
| CYLINDER HEAD Weight | 12.1 kgf (26.62 lb) | p. 11 |
| OIL FILTER Weight | 0.4 kgf (0.88 lb) | p. 17 |
| PISTON Weight (STD) | 0.4 kgf (0.88 lb) | p. 25 |
| FLYWHEEL Weight | 17.3 kgf (38.06 lb) | p. 27 |
| INJECTION PUMP Weight | 1.38 kgf (3.036 lb) | p. 33 |
| GLOW PLUG Weight | 0.1 kgf (0.22 lb) | p. 39 |
| DYNAMO Weight | 1.33 kgf (2.926 lb) | p. 45 |
| FUSE (30A) Weight | 0.009 kgf (0.0198 lb) | p. 111 |
Kubota B3030HSD Common Problems This Manual Covers
Kubota B3030HSD engine cranks but will not start or dies shortly after starting p. 88
Inspect the exploded diagram on page 88 to match the stop solenoid to your serial number. Confirm the replacement matches the factory weight of 0.28 kgf (0.616 lb), then order the solenoid and its mounting hardware from the listed table.
Manual Section: Stop SolenoidDash functions and electrical accessories fail intermittently or lose power completely during operation p. 110
Check the electrical wiring section on page 110 for the full fuse block breakdown. The 30A main fuse, at 0.009 kgf (0.0198 lb), gives you the correct replacement part number; cross-reference the parts index for fitment.
Manual Section: Electrical WiringEngine idles roughly and stalls under heavy load or experiences severe power loss p. 32
Review the injection pump diagram on page 32 for the component breakdown. The complete assembly carries a factory weight of 1.38 kgf (3.036 lb). Match the part numbers against your serial range before ordering.
Manual Section: Injection PumpTractor fails to power on when turning the ignition switch to the start position p. 98
Examine the panel board diagram on page 98 to find the main ignition switch assembly. Confirm you order the 2P/SET key starter type for your machine variant, then check the switch components and mounting hardware in the table.
Manual Section: Panel BoardFrequently Asked Questions
What are the replacement specifications for fuel shutoff solenoid?
The fuel shutoff solenoid is part number 32721-60010, listed as 'SOLENOID STOP', quantity 1, weighing 0.28 kgf (0.616 lb).
What are the replacement specifications for fuses?
Several fuses are listed. The 'FUSE' (Part No. 1G111-65720) is 30A at 0.009 kgf (0.0198 lb). 'FUSE AUTO' types include 5A (66426-80010), 10A (48100-55880), 20A (36919-56650), and a second 30A (52300-41630), each with its own weight.
What do I get after purchasing this Kubota B3030HSD manual?
Expect a 323-page searchable PDF, ready to download right away. 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 B3030HSD Parts Catalog printable?
None at all. The PDF is DRM-free, so print whatever sections you want to take to the shop. Standard letter or A4 paper works fine.
Document Quality
This document is a scanned PDF with an accurate OCR text layer, allowing you to search and copy text throughout. The text quality is crisp and consistently easy to read across all pages. Diagrams and illustrations are clear scanned images with all labels perfectly readable, though they may show slight pixelation if zoomed in very closely. All pages are clean, well-aligned, and free from scan artifacts, stains, or marks. There are no notable blank or filler pages, with content present on every page.
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