Need the International Harvester B-250 operator manual in PDF form? This 74-page factory reference (OEM #1026 140 R6) covers your B-250 diesel tractor from cold start to scheduled maintenance and safety precautions. Open it to a full instruments and controls section: heat indicator, oil pressure gauge, glow plug switch, and ammeter readings explained. You also get hydraulic lift, automatic hitch, and self-sealing coupling operation, plus full lubrication and maintenance schedules.
What's Inside This International Harvester B-250 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction - Serial Numbers | 9-10 | Tractor Serial Number, Engine Serial Number, Clutch Housing, Engine Crankcase |
| Specifications | 11-13 | Four Cylinder Diesel, Indirect Injection, Valve-In-Head, C.A.V. Injection Pump, Injection Nozzles, Oil Cup Air Cleaner |
| Safety Rules | 14 | Power-Equipment, Power Line Shielding, Gear Shifter Lever, Radiator, Brakes, Brake Pedals, Lighting, Trailers |
| General Instructions and Precautions | 15 | Clutch, Brake Pedals, Drawbar, Pneumatic Tyres, Radiator, Cooling System, C.A.V. Attachments, Injection Pump and Brake Housings |
| Instruments and Controls | 16 | Heat Indicator, Oil Pressure Gauge, Glow Plug Switch, Ammeter, Clutch Pedal, Gear Shifter Lever |
| Preparing and Operating Your Tractor | 17-28 | Coolant, Fuel, Engine Lubrication, Injection Pump, Air Cleaner, Transmission, Pneumatic Tyres, Adding Weight to the Tractor |
| Operation of the Hydraulic Lift, Automatic Hitch and Self-Sealing Coupling/ Usin | 29-34 | Using Three Point Linkage (Universal Linkage, Lower Links, Top Link, Lift Rods, Lower Link Hitch Points, Check Chains, Hitching Implements to the Tractor, Operating the Hydraulic Section, Hydraulic Controls, Main Control Valve Lever, Isolating Valve, Normal Linkage Operation, Depth Control Handwheel, Fixing Implement Operating Height, Depth Control Stop, Weight Transfer and Depth Control, Depth Control Stop Spring, Setting the Depth, Field Depth Adjustment, Using Telescopic Top Link, Improving Penetration, Removal of Implement) |
| Automatic Hitch Attachment | 35-36 | Assembly Instructions, Operating Instructions |
| Self-Sealing Coupling Attachment | 37 | Hydraulic System, Tipping Trailers, Combine Harvesters, Coupling, Dust Covers, Trailer Dust Cap |
| Maintenance | 38-69 | Engine and Chassis Lubricant Specifications, Lubricating Oil and Grease Specifications, Diesel Engine Crankcase Oil, Gear Lubricant, Lubrication Fittings - Grease |
| Special Equipment | 70-74 | Hydraulic Lift, Three Point Linkage, Automatic Hitch, Belt Pulley, Front Wheel Weights, Rear Wheel Weights |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front Tyre Pressure (On Road) | 28 lbs. per square inch | p. 19 |
| Rear Tyre Pressure (On Road) | 16 lbs. per square inch | p. 19 |
| Engine Oil Change Interval | 120 hours | p. 39 |
| Oil Filter Element Replacement Interval | 120 hours | p. 40 |
| Generator Lubrication Interval | 480 hours | p. 49 |
| Starter Motor Out-of-Mesh Clearance | 1/8" | p. 50 |
International Harvester B-250 Common Problems This Manual Covers
Brakes not holding or pulling to one side when applied
Test each brake pedal independently on level ground - uneven stopping pull means one side is worn or dragging. Check that the brake levers have equal travel before engaging and that they are not sticking in the released position. Inspect brake adjustment from the procedures on page 55. Do not operate on slopes until brakes hold evenly on both sides; safety rules on page 14 cover slope operation limits.
Manual Section: Brakes p. 55PTO not engaging or disengaging when lever is operated
Verify the PTO control lever moves fully to the engaged position without binding - a partially engaged PTO overheats and slips under load. Check that the implement PTO shaft is properly connected and the shear bolt is intact. Review the operating instructions on page 17 for correct PTO engagement sequence and confirm engine is running at the correct speed for your implement before engaging. Inspect the area around the PTO output shaft for debris or crop wrap that could prevent full engagement.
Manual Section: Preparing and Operating Your Tractor p. 17Tyres losing pressure frequently or wearing unevenly across the tread width
Check front tyre pressure against the specification on page 19: 28 lbs. per square inch on-road, with rear tyres at 16 lbs. per square inch. Use a reliable gauge - visual inspection alone cannot confirm correct pressure. Uneven wear across the tread usually means the tractor is operating with consistent overload on one axle or with ballast distribution off. The tyre maintenance and wear section on page 56 covers causes of uneven and excessive wear patterns.
Manual Section: Pneumatic Tyres p. 56Frequently Asked Questions
How to reset the hydraulic system on International Harvester B-250?
To refresh the hydraulic system, drain the old oil and then refill the reservoir with good quality hydraulic oil. After refilling, run the engine for about one minute to expel air from the pipes and allow more oil to be added to fill the system to capacity. Do not run the engine without hydraulic oil in the reservoir. p. 45
How do you fix international Harvester B-250 hard to start in cold weather, engine cranks slowly or not at all?
Check the glow plug switch operation on page 16 - hold it in until the indicator shows ready, then attempt to start. Verify the battery connections are clean and tight; a weak battery is the most common cold-start culprit. Inspect the air cleaner oil cup for sludge, which restricts airflow at low temperatures. Troubleshooting steps for hard-start conditions begin on page 52. p. 52
How do you fix gears hard to shift or grind when moving between positions during field work?
Check that the clutch pedal (described on page 16) is fully depressed before selecting a gear - partial engagement causes drag and makes shifting fight you. Verify the clutch linkage has not stretched or gone out of adjustment over the season. Bring the tractor to a complete stop before downshifting under load. The transmission troubleshooting index on page 55 covers defective shifter fork, clutch drag, and gears slipping. p. 55
How do you fix engine oil visible in transmission fluid or fluid looks contaminated and milky?
Stop operating immediately - mixing fluids accelerates internal wear. Check the fluid specifications on page 12 and drain both sumps before comparing samples. Inspect the oil level via the dipstick against the MIN/MAX marks; a rising level in either sump without adding fluid is a warning sign. Refer to the lubrication system section starting page 53 for oil dilution diagnostics. Verify you are using the correct gear lubricant grade as specified on page 38. p. 53
Is this International Harvester B-250 Operator Manual a digital download?
A 74-page Operator Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print specific sections of this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Are electrical wiring diagrams included in this International Harvester B-250?
Yes, this International Harvester B-250 Operator Manual includes a wiring diagram for the electrical system.
Reviews
There are no reviews yet.