Tap open the bookmarked PDF and the B1550D opens up by system: 53 pages of engine internals (piston, crankshaft, injection pump, governor), 24 pages of hydraulic gear pump, control valve, and lift arm callouts, 52 pages on transmission, PTO, and differential, and 70 more covering front axle, steering, fenders, and chassis. Factory part numbers sit next to every component for clean dealer-counter ordering. Need the right fuse? Page 117 calls out the 15A. Ordering pistons? The +0.5MM oversize and -0.2MM crankpin undersize sets are listed on page 12. No more guessing from a blurry forum screenshot. Bookmarks jump you straight to the rear axle or hydraulic block so you can read off the number your dealer needs.
What's Inside This Kubota B1550D Parts Manual
| System | Pages |
|---|---|
| Crankcase | 6-7 |
| Oil Pan | 8-10 |
| Piston/Crankshaft | 11-12 |
| Main Bearing Case | 13-14 |
| Flywheel | 15-17 |
| Cylinder Head | 18-19 |
| Valve/Rocker Arm | 20-21 |
| Nozzle Holder | 22-23 |
| Nozzle Holder [Component Parts] | 24-25 |
| Cylinder Head Cover | 26-28 |
| Inlet Manifold | 29-30 |
| Exhaust Manifold | 31-32 |
| Camshaft | 33-34 |
| Gear Case | 35-36 |
| Water Pump | 37-38 |
| Tension Pulley [Ca] | 39-40 |
| Water Flange | 41-42 |
| Fuel Pump | 43-44 |
| Injection Pump | 45-46 |
| Injection Pump [Component Parts] | 47-48 |
| Engine Stop Lever | 49-50 |
| Speed Control Plate | 51-52 |
| Governor | 53-54 |
| Upper Gasket Kit | 55-56 |
| Lower Gasket Kit | 57-58 |
| Dynamo [A Au] | 59-60 |
| Alternator [Ca] | 61-62 |
| Dynamo [A Au] [Component Parts] | 63-64 |
| Alternator [Ca] [Component Parts] | 65-66 |
| Clutch | 67-68 |
| Hydraulic Gear Pump | 69-70 |
| Hydraulic Gear Pump [Component Parts] | 71-73 |
| Air Cleaner | 74-75 |
| Muffler | 76-77 |
| Horizontal Muffler [Option] | 78-79 |
| Engine Stop Rod | 80-82 |
| Accelerator Lever | 83-84 |
| Fuel Tank | 85-86 |
| Fuel Pipe | 87-88 |
| Fuel Filter [Component Parts] | 89-90 |
| Water Pipe | 91-93 |
| Radiator | 94-96 |
| Starter | 97-98 |
| Starter [Component Parts] | 99-100 |
| Battery | 101-103 |
| Light | 104-106 |
| Working Light [Option] | 107-108 |
| Panel / Switch [A Au] | 109-111 |
| Panel / Switch [Ca] | 112-113 |
| Panel Board [Component Parts] | 114-115 |
| Wire Harness [A Au] | 116-117 |
| Wire Harness [Ca] | 118-119 |
| Clutch Rod | 120-121 |
| Clutch Pedal | 122-123 |
| Clutch Housing | 124-125 |
| Transmission Case | 126-128 |
| Transmission Case Cover | 129-130 |
| Propeller Shaft | 131-132 |
| 1St Shaft | 133-135 |
| 2Nd Shaft | 136-137 |
| 3Rd Shaft/5Th Shaft | 138-139 |
| 4Th Shaft | 140-141 |
| Pinion Shaft Gear | 142-143 |
| Reverse Shaft | 144-146 |
| Rear PTO | 147-149 |
| Mid PTO | 150-151 |
| Front PTO [Option] | 152-153 |
| Main Gear Shift Lever | 154-155 |
| Main Gear Shift Fork | 156-157 |
| Range Gear Shift Lever | 158-159 |
| PTO Gear Shift Lever | 160-161 |
| Rear Differential | 162-163 |
| Diff.Lock Pedal | 164-165 |
| Rear Axle | 166-167 |
| Rear Axle Case | 168-169 |
| Rear Wheel (8-16) | 170-172 |
| Rear Wheel (29 X 12.00-15) | 173-175 |
| Rear Wheel (31 X 13.5-15 Bar) [A] | 176-178 |
| Brake | 179-180 |
| Brake Rod | 181-182 |
| Brake Pedal | 183-184 |
| Front Wheel Hub [Without Bi-Speed Turn] | 185-186 |
| Front Wheel Hub | 187-188 |
| Front Gear Case [Without Bi-Speed Turn] | 189-190 |
| Front Gear Case | 191-192 |
| Bevel Gear Case | 193-194 |
| Front Axle Case [Without Bi-Speed Turn] | 195-196 |
| Front Axle Case [With Bi-Speed Turn] | 197-198 |
| Front Differential [Without Bi-Speed Turn] | 199-200 |
| Front Differential [With Bi-Speed Turn] | 201-202 |
| Bevel Gear [With Bi-Speed Turn] | 203-204 |
| Clutch Disk [With Bi-Speed Turn] | 205-206 |
| Front Drive Shaft | 207-209 |
| Front Drive Lever | 210-211 |
| Shift Fork [With Bi-Speed Turn] | 212-214 |
| Shift Lever [With Bi-Speed Turn] | 215-216 |
| Bi-Speed Turn Rod [With Bi-Speed Turn] | 217-218 |
| Bi-Speed Turn Lever [With Bi-Speed Turn] | 219-220 |
| Front Wheel (6-12B) | 221-222 |
| Front Wheel (20.5 X 8.00-10) | 223-224 |
| Front Axel Frame | 225-227 |
| Knuckle Arm [Without Bi-Speed Turn] | 228-229 |
| Knuckle Arm [With Bi-Speed Turn] | 230-231 |
| Manual Steering | 232-234 |
| Power Steering | 235-236 |
| Manual Steering [Component Parts] | 237-238 |
| Power Steering [Component Parts] | 239-240 |
| Hydraulic Pipe (Ps) | 241-242 |
| Hydraulic Pipe (Front) | 243-244 |
| Hydraulic Pipe (Rear) | 245-246 |
| Hydraulic Block (Ms) [Component Parts] | 247-248 |
| Hydraulic Block (Ps) [Component Parts] | 249-250 |
| Lift Arm | 251-253 |
| Hyd.Cylinder Cap [Component Parts] | 254-259 |
| Control Valve | 260-261 |
| Control Valve [Component Parts] | 262-264 |
| Top Link | 265-266 |
| Lower Link | 267-268 |
| Lifting Rod | 269-270 |
| Hood (Bonnet) | 271-272 |
| Lace | 273-274 |
| Hood Cover Rear | 275-276 |
| Skirt (Front) | 277-278 |
| Skirt (Side) | 279-281 |
| Dust Cover | 282-283 |
| Tank Support | 284-285 |
| Fender | 286-288 |
| Seat | 289-290 |
| Step | 291-292 |
| ROPS [A Ca] | 293-296 |
| Label 1 | 297-298 |
| Label 2 | 299-301 |
| Accessories and Service Parts | 302-302 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FUSE | 15A | p. 117 |
| FUSE AUTO | 15A | p. 302 |
| Piston Oversize | +0.5MM | p. 12 |
| Crankpin Metal Undersize | -0.2MM SET | p. 12 |
| Nozzle Adjusting Washer Thickness | 1.00MM | p. 25 |
| Injection Pump Shim Thickness | 0.20MM | p. 46 |
| Hydraulic Pump Gear Tooth Count | 27T | p. 70 |
| Fuse Rating | 15A | p. 117 |
| 3rd Shaft/5th Shaft Shim Thickness | 0.5MM | p. 139 |
| Rear PTO Gear Tooth Count | 22T | p. 149 |
| Rear Axle Gear Tooth Count | 55T | p. 167 |
| Rear Wheel Tire Size | 8-16 | p. 172 |
Kubota B1550D Common Problems This Manual Covers
B1550D will not start; need the fuel shutoff solenoid and key switch part numbers for replacement p. 109
Open the Panel / Switch exploded view on page 109 for the key switch assembly callout. Cross-check the wire harness diagram on page 116 for the solenoid connector and 15A fuse routing. Verify your serial number range before ordering, and note that the engine stop lever linkage parts on page 49 are listed separately.
Manual Section: Panel / Switch [A Au]Hard starting with heavy smoke; can't locate the fuel filter element and injection pump component parts p. 89
Pull the Fuel Filter [Component Parts] exploded view on page 89 for the filter bowl, element, and o-ring callouts. Injector-side parts sit in the Injection Pump [Component Parts] breakdown starting page 47, with the 0.20MM shim listed on page 46. Confirm the 1.00MM nozzle holder washers against page 25 before placing the order.
Manual Section: Fuel Filter [Component Parts]Overheating under load; need radiator, water pump, and tension pulley part numbers p. 94
Begin with the Radiator exploded view on page 94 for the core, cap, and hose callouts. Reference the Water Pump diagram on page 37 for impeller and gasket numbers, then check the Tension Pulley assembly on page 39 for the belt tensioner components. Match the Water Pipe routing on page 91 to confirm hose lengths suit your serial range.
Manual Section: RadiatorWeak hydrostatic feel; need transmission filter and hydraulic gear pump parts identification p. 71
Check the Hydraulic Gear Pump [Component Parts] breakdown on page 71 for the 27T drive gear, seals, and o-rings called out on page 70. For transmission fluid path components, reference the Transmission Case exploded view on page 126 and the 0.5MM shim on page 139. Verify the Control Valve component parts on page 262 align with your hydraulic block configuration.
Frequently Asked Questions
What are the replacement specifications for Engine oil filter?
Part number 15531-32110 is the replacement engine oil filter for the Kubota B1550D, listed as 'FILTER OIL', quantity one, weight 0.185 kgf (0.407 lb).
What are the replacement specifications for Fuel filter?
Part number 15751-43010 is the replacement fuel filter assembly for the Kubota B1550D, listed as 'ASSY FILTER FUEL' at 0.41 kgf (0.902 lb). For individual sub-components, see the 'FUEL FILTER [COMPONENT PARTS]' section.
How quickly can I access this Kubota B1550D manual after buying?
Checkout delivers the 302-page searchable PDF immediately. Open it on a laptop, tablet, or phone, then carry it out to the shop floor.
Am I able to print pages from this Kubota B1550D manual?
No restrictions. The PDF is DRM-free, so print whatever sections you want on standard letter or A4 paper and take them to the shop.
Does this Kubota B1550D manual include hydraulic schematics?
Yes. The catalog includes detailed exploded-view diagrams for every hydraulic component, including the gear pump, control valve, lift arms, and hydraulic pipes. It does not include full hydraulic system schematics or pressure test specifications.
Document Quality
This is a scanned copy of a physical parts book, but it has been processed with OCR, so you can search and copy the full text. The text in the parts lists is clear and easy to read, while the diagrams are raster images that are legible but will pixelate when zoomed in closely. The pages are clean and free of handwriting or major stains, though some have a slight gray background and minor skew from the scanning process.
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