Running a Case IH Farmall 40B or 50B and need the factory word on your compact tractor? This 176-page operator manual (OEM #84370270) covers every control, daily check, and maintenance interval straight from Case IH. Inside: a full safety section covering ROPS requirements, safety decals, and personal protection rules, plus a controls walkthrough that maps every instrument panel indicator and explains HST operation, differential lock, and three-point hitch attachment. You also get a structured maintenance chapter with drain-and-fill steps for the fuel filter, air cleaner, and transmission and rear axle oil, alongside troubleshooting charts for the engine, clutch, hydraulic lift, and steering. Set your hydraulic lift relief valve to 16671 kPa (2418 psi) and keep clutch pedal free travel between 20 and 30 mm. Your machine shouldn't sit idle while you hunt down a setting. Bookmarked and searchable; pull up any procedure on your phone before you touch a wrench.
What's Inside This Case IH Farmall 40B, Farmall 50B Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 7-12 | Note to the Owner, Foreword Ecology and the Environment, Proposition 65, Advice, Product Identification |
| Safety Information | 13-40 | Precautionary Statements and Signal Word Definitions, Safety Rules, Personal Safety, ROPS - Personal Safety - Roll-Over Protective Structure, Safety Decals, International Symbols |
| Controls/Instruments | 41-64 | Seat Belt, Instrument Panel - Identification, Clutch Pedal, PTO Switch, Differential Lock Pedal, Primary Hydraulic Power System - Dynamic Description |
| Operating Instructions | 65-92 | Engine Break-In Procedure, Power Take-Off (PTO) Operation, Attaching Three-Point Equipment, Starting the Engine, Stopping the Engine, Hydrostatic Transmission (HST) Operation |
| Transport Operations | 93-98 | Lighting System, Hazard Warning Light Operation, Driving the Vehicle, Carrying the Tractor on a Transporter, Towing |
| Working Operations | 99-102 | Tractor Ballasting, Tractor Ballasting Weights, Liquid Ballast |
| Maintenance | 103-150 | Fuel Filter System Fuel Filter - Drain Fluid, Air Cleaner - Cleaning - Primary Element, Change Transmission, Rear Axle and Hydraulic Systrem Oil |
| Troubleshooting | 151-154 | Engine - Troubleshooting, Clutch - Troubleshooting, Service Brake - Troubleshooting, Hydraulic Lift System - Troubleshooting, Steering - Troubleshooting |
| Specifications | 155-162 | Wheels and Tracks - Tire Ratios - Wheel Tread Settings, Wheels and Tracks - Tire Pressure, Liquid Ballast, Engine and PTO in - General Specification, Tractor Dimensions |
| Accessories | 163-164 | Grille Guard, Tool Box, Trailer Electrical Socket |
| Forms and Declarations | 165-168 | Delivery Report - Owner Copy, Delivery Report - Dealer Copy, Inoperative Service Checks, Safety Items Check, Operative Service Checks |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic Lift System Relief Valve Setting | 16671 kPa (2418 psi) | p. 158 |
| Engine Valve Clearance (Cold) - Intake | 0.25 mm (0.010 in) | p. 157 |
| Clutch pedal free travel | 20 - 30 mm (0.79 - 1.18 in) | p. 127 |
| Engine Oil Capacity (with filter) | 6.6 l (7.0 US qt) | p. 157 |
| Fuel Tank Capacity | 36.0 l (9.5 US gal) | p. 157 |
| Cooling System Capacity | 6.0 l (6.3 US qt) | p. 157 |
| Front Axle Housing Fluid Capacity | 8.0 l (8.4 US qt) | p. 157 |
| Front Wheel Torque | 176 - 196 N·m (130 - 145 lb ft) | p. 159 |
| ROPS to Rear Axle Torque | 147 N·m (108 lb ft) | p. 159 |
| Battery Cold Cranking Amps | 660 A | p. 157 |
| Farmall 40B | ||
| Engine Gross Horsepower | 30.2 kW (40.4 Hp) | p. 157 |
| Farmall 50B | ||
| Engine Gross Horsepower | 34.6 kW (46.4 Hp) | p. 157 |
Case IH Farmall 40B, Farmall 50B Common Problems This Manual Covers
Case IH Farmall tractor engine cranks but won't fire in cold morning temperatures p. 151
Check fuel level first - tank capacity is 36.0 l (9.5 US gal) per page 157. Follow the cold start procedure on page 65 before cranking. Verify the fuel shutoff is open and the air cleaner is unobstructed. If the engine turns over normally but won't fire, consult the engine no-start chart on page 151.
Manual Section: ENGINE - TroubleshootingThree-point hitch won't raise implement to operating height or lifts very slowly
Check the transmission and hydraulic oil level at the sight glass first. Verify the hydraulic lift lever position per the controls diagram on page 65. Confirm implement weight is within tractor capacity. If the linkage still won't raise with correct fluid level, the system relief valve (rated 16671 kPa / 2418 psi per page 158) requires dealer inspection.
Manual Section: Hydraulic Lift System - TroubleshootingClutch slips under load or gear changes grind when shifting at field speeds
Measure clutch pedal free travel - it must be 20-30 mm (0.79-1.18 in) per page 127. Free travel outside this range means the clutch needs adjustment before further operation. Check that nothing is blocking the pedal's return. If free travel is correct but slipping continues under load, the clutch disc is worn and requires dealer service.
Manual Section: Clutch - TroubleshootingTractor creeps forward or backward when HST pedal is in neutral position
Verify the HST pedal returns fully to center per the driving procedure on page 65. Check that floor mats or debris are not preventing the pedal from reaching neutral. Inspect transmission oil condition - the change interval is first 50 hours, then every 300 hours per page 113. If creep continues with fresh fluid, the neutral circuit requires dealer adjustment.
Manual Section: TRANSMISSION Hydrostatic - TroubleshootingBattery drains overnight or warning light stays on after engine is running
Inspect the 50 A main fuse on page 137 and replace if blown. Check battery terminals for corrosion - the battery must meet 660 A cold cranking amps per page 157. Verify the alternator belt is intact and correctly tensioned. Clean terminals and re-test; if the warning light stays on with a charged battery, schedule dealer electrical service.
Manual Section: ELECTRICAL POWER SYSTEM - TroubleshootingSteering wheel requires excessive force to turn, especially at low ground speeds
Check hydraulic oil level at the sight glass before anything else - low fluid is the most common cause of hard steering. Inspect front wheel toe-in, which should measure 0-5 mm (0-0.2 in) per page 144. The steering relief valve is factory set to 14220 kPa (2062 psi) per page 158; if effort remains excessive, have a dealer verify system pressure.
Manual Section: STEERING - TroubleshootingFrequently Asked Questions
How do you fix case IH Farmall tractor engine cranks but won't fire in cold morning temperatures?
Check fuel level first - tank capacity is 36.0 l (9.5 US gal) per page 157. Follow the cold start procedure on page 65 before cranking. Verify the fuel shutoff is open and the air cleaner is unobstructed. If the engine turns over normally but won't fire, consult the engine no-start chart on page 151.
How do you fix three-point hitch won't raise implement to operating height or lifts very slowly?
Check the transmission and hydraulic oil level at the sight glass first. Verify the hydraulic lift lever position per the controls diagram on page 65. Confirm implement weight is within tractor capacity. If the linkage still won't raise with correct fluid level, the system relief valve (rated 16671 kPa / 2418 psi per page 158) requires dealer inspection.
How do you fix clutch slips under load or gear changes grind when shifting at field speeds?
Measure clutch pedal free travel - it must be 20-30 mm (0.79-1.18 in) per page 127. Free travel outside this range means the clutch needs adjustment before further operation. Check that nothing is blocking the pedal's return. If free travel is correct but slipping continues under load, the clutch disc is worn and requires dealer service.
How do you fix tractor creeps forward or backward when HST pedal is in neutral position?
Verify the HST pedal returns fully to center per the driving procedure on page 65. Check that floor mats or debris are not preventing the pedal from reaching neutral. Inspect transmission oil condition - the change interval is first 50 hours, then every 300 hours per page 113. If creep continues with fresh fluid, the neutral circuit requires dealer adjustment.
How quickly can I access this manual after buying?
Instant PDF download. You get the full 176-page searchable Operator Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this Case IH Farmall 40B, 50B Operator Manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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