This is the factory operator manual for the Kubota B1550 and B1750 compact diesel tractors, covering the B1550E and B1750E in 2WD and the B1550D and B1750D in 4WD. These machines run Kubota's D850-5B and D950-5B diesel engines, and this 55 page book is the owner's guide to running and maintaining them.
Inside you get safe operation practices, full specification tables for each model, instrument and control layouts, three-point hitch and wheel setup, and the maintenance schedule with fluid and service intervals. A troubleshooting section and wiring diagrams round it out.
It is written for the operator, so it focuses on day to day running, checks, adjustments, and light service rather than full engine or transmission teardown.
What's Inside This Kubota B1550–B1750 Series Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Operator's Manual | 1 | Models B1550 B1750, Kubota Corporation Contact Information, Read and Save This Book |
| Abbreviation List | 2 | Abbreviations and Definitions Table, Kubota Corporation Is..., Basic Necessities Giant |
| Foreword | 3-4 | - |
| Safe Operation | 5-9 | Before Operating the Tractor, Operating the Tractor, Warning and Caution Labels |
| Servicing of Tractor | 10 | Identification Plate, Tractor Serial Number, Engine Serial Number, Recording Tractor Information |
| Specifications | 11-13 | Specification Table, Traveling Speeds |
| Implement Limitations | 14-15 | General Control Operation Limitations, Implement Limitations Table for B1550, Implement Limitations Table for B1750 |
| Operating New Tractor | 16 | Changing Lubricating Oil for New Tractors, Loading and Unloading |
| Instrument Panel and Controls | 17-25 | Switches, Controls, Auxiliary Hydraulics |
| Three-Point Hitch & Drawbar | 26 | Adjustment of Top Link, Adjustment of Lifting Rod, Adjustment of Check Chains, Drawbar (If Equipped) |
| Wheels, Tires and Ballast | 27-30 | Treads, Wheel Hub, Toe-In |
| Operating Instructions | 31-33 | Operating the Engine, Directions for Operating |
| Maintenance | 34-35 | Daily Check, Maintenance Check List |
| Check and Maintenance | 36-45 | Fuel, Engine Oil, Transmission Fluid, Front Axle Oil, Steering and Greasing, Radiator, Air Cleaner, Battery |
| Adjustments | 46-47 | Fan Drive Belt, Brake |
| Troubleshooting | 48-50 | Engine Troubleshooting, Tractor Troubleshooting, Battery Troubleshooting |
| Long-Term Storage | 51 | Storage Procedure, Clutch Pedal Wooden Block, Options (Consult Your Kubota Dealer) |
| Lubricant Specifications | 52 | Engine Oil, Transmission Oil, Other Lubricants, Kubota Lubricants |
| Wiring Diagram | 53-54 | A Type, Color of Wire Harness, B Type |
| Index | 55 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Rear wheel lug torque | 10-17kgf-m (72-123ft-lbs.) | p. 27 |
| Front wheel lug torque | 7.9-9.2kgf-m (57-67ft-lbs.) | p. 27 |
| Air filter element cleaning pressure | must not exceed 205 kPa (2.1 kgf/cm²; 30 psi) | p. 43 |
| Brake pedal free travel | 20 to 30 mm (0.8 to 1.2 in.) | p. 47 |
| Fusible link size | 0.5mm2 | p. 53 |
| Head light bulb | DC12V 15W/15W | p. 53 |
| Hazard light bulb | DC12V 25W | p. 53 |
| Fuel Tank Capacity | 18 L | p. 11 |
| Engine Crankcase Capacity | 3.1 L | p. 11 |
| Transmission Case Capacity | 12 L | p. 11 |
| B1550E, B1550D | ||
| Battery | 12V (45 AH) | p. 11 |
| B1750E, B1750D | ||
| Battery | 12V (45 AH) | p. 12 |
Kubota B1550–B1750 Series Common Problems This Manual Covers
Hard starting or no start
A weak battery, loose wiring, a fuel supply problem, or a glow plug fault can leave these tractors slow to start or dead. The troubleshooting section walks the engine and battery symptoms to a likely cause.
Manual Section: Troubleshooting p. 48Overheating from a clogged radiator
The radiator screen and fins pack with dust and grass during mowing and dusty work, driving temperatures up. The check and maintenance section covers cleaning the radiator and cooling system.
Manual Section: Check and Maintenance p. 36Brake pedal free travel drifts
Brake pedals need periodic adjustment to keep smooth, even free travel. The adjustments section gives the free travel target and how to set the brake linkage.
Manual Section: Adjustments p. 46Wheel bolts loosen over time
Front and rear wheel hardware works loose and needs re-torquing to the factory values. The wheels, tires, and ballast section lists the wheel bolt torque figures.
Manual Section: Wheels, Tires and Ballast p. 27Fan drive belt slips
A loose or worn fan drive belt reduces cooling and charging and squeals under load. The adjustments section covers checking and tensioning the belt.
Manual Section: Adjustments p. 46Bulbs and lights fail
Cracked lenses, failed bulbs, and chafed wiring cause intermittent lighting on older units. Bulb replacement is covered under check and maintenance.
Manual Section: Check and Maintenance p. 36Frequently Asked Questions
Which Kubota models does this manual cover?
It covers the B1550E and B1550D plus the B1750E and B1750D, spanning both the 2WD and 4WD versions of the B1550 and B1750 compact tractors.
Does it list wheel lug torque values?
Yes. The wheels, tires, and ballast section gives rear wheel bolt torque of 10 to 17 kgf-m (72 to 123 ft-lbs) and front wheel bolt torque of 7.9 to 9.2 kgf-m (57 to 67 ft-lbs). p. 27
Does it cover maintenance intervals?
Yes. The maintenance section gives the service schedule, including a 100 hour engine oil change interval and a 200 hour transmission fluid interval, along with the daily check list. p. 34
Is this an operator manual or a full shop manual?
It is the operator manual. It focuses on running the tractor, daily checks, adjustments, and light maintenance, not on full engine or transmission disassembly.
Will this Kubota B1550–B1750 Series Operator Manual download right away?
Yes, instant download of the full 55-page searchable Operator Manual. Open it on any device, laptop at the bench or phone in the field.
Can I print this manual?
Yes. No DRM or copy protection. Print the whole manual or just the pages you need on any home or office printer.
Does this Kubota B1550–B1750 Series Operator Manual have electrical diagrams?
This is an operator manual. It includes a wiring diagram covering the A-Type and B-Type electrical harness layouts (pages 53–54), useful for tracing circuits and identifying connector locations. These are overview diagrams, not full workshop electrical schematics with detailed wire colors, connector pinouts, and circuit descriptions, for those, refer to the Kubota B1550/B1750 workshop/service manual.
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