All 522 pages of this Case IH Magnum Operator Manual (OEM #84244301) are factory-written for one purpose: keeping your 225, 250, 280, 310, and 335 tractors running exactly as CNH intended. Inside, you get a complete controls and instruments section covering the armrest console, automatic temperature control, gauge cluster, and every keypad function. Operating procedures cover Automatic Productivity Management, the differential lock, electronic end-of-row, and MFD engagement. Maintenance runs deep: service intervals, cab air filter, engine oil and filter steps, transmission oil, and a full fluid capacities table. Fill the 9.0L engine on your 280, 310, or 335 to 24.6L with a filter change; the cooling system holds 26.5L. Every hour in the shop costs money. Get the factory answer first; bookmarks let you jump straight to any section without scrolling through all 522 pages.
What's Inside This Case IH Magnum 225–335 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Operator'S Manual - Magnum 225, 250, 280, 310, 335 | 1 | - |
| General Information | 9-20 | Safety Rules, Read the Operators Manual, Product Identification, Declaration of Conformity, Tractor Intended Use, Cnh America Llc Technical Manuals, Manual Storage |
| Safety Information | 21-48 | Safety Rules - General, Safety Rules - Air Conditioning System, Safety Rules - Basic Operating, Safety Rules - Battery, Safety Rules - Driving on Public Roads |
| Controls/Instruments | 49-138 | Adjusting the Armrest Console, Automatic Temperature Control System, Display Settings, Gauges, Keypad, Steering Column |
| Operating Instructions | 139-190 | Automatic Productivity Management (Apm), Constant Engine Speed, Differential Lock System, Electronic End of Row System, Mechanical Front Drive (MFD), Powershift Transmission |
| Transport Operations | 191-198 | Safe Transport Speed, Securing the Tractor for Shipping, Towing the Tractor, Tractor Warning Lamps, Safety Rules |
| Working Operations | 199-342 | Auto Depth Control, Auxiliary Power and Lighting, Drawbar capacity/position, Hitch Set Point, Load Control Operation, Wheel Slip and Power Hop Performance |
| Maintenance | 343-464 | Battery Access and Service, Cab Air Filter, Engine Oil and Filter, Fuel Tank, Transmission Oil Filter, Tractor Jacking Points |
| Troubleshooting | 465-470 | Display Warnings, Critical Warning Displays, Non-Critical Displays |
| Specifications | 471-488 | Engine - General Specification, Maximum Operating Weight, Power Train - General Specification, Travelling - Speeds, Vehicle Dimensions and Shipping Weight |
| Accessories | 489-512 | Adjustable Bottom Cab Step, Chemical Tank Mounting, Farming System Displays, Frame Reinforcement Kits, Front Wheel Fenders, Trailer Brake Connections |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Magnum 225 and 250 | ||
| Engine Oil Capacity (8.3L engine, no filter change) | 19 l | p. 351 |
| Engine Oil Capacity (8.3L engine, with filter change) | 21 l | p. 351 |
| Magnum 280, 310 and 335 | ||
| Engine Oil Capacity (9.0L engine, no filter change) | 22.7 l | p. 351 |
| Engine Oil Capacity (9.0L engine, with filter change) | 24.6 l | p. 351 |
| All Models | ||
| Cooling System Capacity | 26.5 l | p. 351 |
| Transmission/Hydraulic System Capacity | 172 l | p. 351 |
| Engine Oil Pressure (rated speed) | 480 kPa (70 psi) | p. 471 |
| Cooling System Pressure Cap | 103 kPa (15 psi) | p. 472 |
| PTO Output Shaft Size (540 RPM) | 6 splines, 34.9 mm (1.375 in) diameter | p. 474 |
| PTO Output Shaft Size (1000 RPM, 21 splines) | 21 splines, 34.9 mm (1.375 in) diameter | p. 474 |
| PTO Output Shaft Size (1000 RPM, 20 splines) | 20 splines, 44.5 mm (1.75 in) diameter | p. 474 |
| Front Hitch OECD Lift Capacity (standard and suspended axles) | 4165 kg (9185 lb) | p. 475 |
Case IH Magnum 225–335 Common Problems This Manual Covers
Case IH Magnum dashboard warning light illuminated for engine oil pressure during operation p. 465
Stop the tractor immediately and shut down the engine. Check engine oil level on the dipstick before restarting. On Magnum 225 and 250 (8.3L engine), capacity is 21 l with filter change; on Magnum 280, 310, and 335 (9.0L engine), capacity is 24.6 l with filter change. Rated oil pressure at operating speed should be 480 kPa (70 psi) — if level is correct and light persists after restart, check the warning display table on page 465 for corrective action steps.
Manual Section: TroubleshootingWater in fuel warning displayed on instrument panel, engine running rough p. 465
Check the warning display table on page 465 for the water-in-fuel indicator corrective action. Drain the primary fuel filter bowl of accumulated water before attempting to restart. Replace the primary fuel filter per the procedure and prime the fuel system using the priming steps — do not crank the engine dry or air locks will require additional priming cycles.
Manual Section: TroubleshootingAir filter blocked indicator lit on display, engine losing power under load
Inspect the air filter restriction indicator on the instrument panel and cross-reference the warning on page 465. Remove the primary air filter element per the procedure and inspect for dust buildup, tears, or collapsed media. Clean the air cleaner body before reinstalling. If the secondary safety element shows contamination, replace it — never clean and reinstall a secondary element.
Manual Section: MaintenanceEngine coolant temperature warning on display, gauge reading in red zone
Shut down the engine and allow it to cool before opening the hood. Check coolant level at the overflow reservoir — do not open the pressure cap on a hot system (cap rated at 103 kPa / 15 psi). Verify coolant level meets the MIN/MAX marks; total system capacity is 26.5 l. Inspect the system for visible leaks per the cooling system check. If level is correct and warning repeats, check the display corrective actions on page 465.
Frequently Asked Questions
How to reset error codes on CASE IH Magnum 225, 250, 280, 310, 335?
For non-critical (Level 2) warnings, you can clear the warning text for 10 minutes by pressing the "RESET" key. However, critical (Level 1) warnings cannot be turned off by the "RESET" button and require immediate attention to prevent serious damage to the tractor.
How to reset the service interval counter on CASE IH Magnum tractors?
To reset a service interval counter to zero after performing service, first display the specific service function screen. Then, press the "B" key to highlight the hours used value, and immediately press the "B" key again for 2 seconds to reset the value to 0 (zero).
How to reset the transmission fault code on CASE IH Magnum 335?
For non-critical (Level 2) transmission fault codes, pressing the "RESET" key will clear the warning text for 10 minutes. The amber warning lamp will remain on if the engine is running until the fault is corrected.
How do you fix case IH Magnum dashboard warning light illuminated for engine oil pressure during operation?
Stop the tractor immediately and shut down the engine. Check engine oil level on the dipstick before restarting. On Magnum 225 and 250 (8.3L engine), capacity is 21 l with filter change; on Magnum 280, 310, and 335 (9.0L engine), capacity is 24.6 l with filter change. Rated oil pressure at operating speed should be 480 kPa (70 psi) — if level is correct and light persists after restart, check the warning display table on page 465 for corrective action steps.
How quickly can I access this manual after buying?
Instant PDF download. You get the full 522-page searchable Operator Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print this 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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