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. 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 schematics 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. The drivetrain section 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 | Key Topics |
|---|---|---|
| Fuel System | Fuel Camshaft and Governor Shaft, Injection Pump, Governor, Speed Control Plate, Nozzle Holder and Glow Plug, Nozzle Holder, Fuel Pump, Air Cleaner, Accelerator Lever, Fuel Tank, Fuel Pipe, Fuel Filter, Stop Solenoid, Speed Control Pedal | |
| Cooling System | Water Flange and Thermostat, Water Pump, Fan, Water Pipe, Radiator, Reserve Tank | |
| Engine | Crankcase, Oil Pan, Cylinder Head, Oil Filter, Main Bearing Case, Camshaft and Idle Gear Shaft, Piston and Crankshaft, Flywheel, Valve and Rocker Arm, Inlet Manifold, Exhaust Manifold, Muffler, Upper Gasket Kit, Lower Gasket Kit, Hydraulic Piston/Lift Arm | |
| Electrical System | Dynamo, Starter, Battery, Switch, Panel Board, Head Light, Hazard Light, Tail Light, Winker Lamp, Electrical Wiring, Alternator Kit, Alternator, Working Light Kit | |
| Clutch & Transmission | Clutch Housing, Transmission Case, Clutch Shaft, PTO Clutch Shaft, PTO Clutch, Range Gear Shift Fork, PTO Gear Shift Arm, Differential Lock Shift Fork, Cruise Control Clutch, Range Gear Shift Lever, PTO Gear Shift Lever | |
| PTO | PTO Valve, PTO Protector | |
| Rear Axle, Differential & Brakes | Rear Axle Case LH, Rear Axle Case RH, Rear Axle, Brake, Brake Rod, Parking Brake Lever, Brake Pedal, Rear Wheel | |
| Front Axle & Steering | Front Wheel Drive Lever, Front Axle Frame, Front Axle Case, Front Axle, Steering Handle, Steering Post, Steering Controller, Steering Linkage, Steering Cylinder, Front Wheel | |
| Hydraulics & 3-Point Hitch | Hydraulic Pump, Position Control Lever, Hydraulic Oil Line, Hydraulic Cylinder, Feed Back Lever, Control Valve, Relief Valve, Point Linkage 2, Point Linkage 1, Auxiliary Control Valve, Auxiliary Control Valve Lever, Auxiliary Control Valve Coupler | |
| Body & Operator Station | Head Cover, Bonnet, ROPS | |
| Decals & Accessories | Label, Accessories and Service Parts | |
| Other Components | Dipstick and Guide, Idle Apparatus, Acceleraotr Rod, Cruise Control Lever, Cruise Control Base, HST Release Rod |
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
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 Solenoid p. 88Dash functions and electrical accessories fail intermittently or lose power completely during operation
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 Wiring p. 110Engine idles roughly and stalls under heavy load or experiences severe power loss
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 Pump p. 32Tractor fails to power on when turning the ignition switch to the start position
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 Board p. 98Frequently 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). p. 89
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. p. 111
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?
Yes, it is fully printable. The PDF is DRM-free, so print whatever sections you want to take to the shop. Standard letter or A4 paper works fine.
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