Need the factory operators guide for your Farmall 300? All 118 pages of this International Harvester Farmall 300 Operators Manual (OEM #1004380R4) cover the 300 and 300 Hi-Clear tractors, from first-day startup checks to full field operation. Inside, you get exploded-view illustrations across the Hydra-Touch, Fast-Hitch, and Torque Amplifier assemblies, and system diagrams covering fuel delivery, cooling, and clutch service. The maintenance section walks your complete lubrication schedule, air cleaning system, brake adjustment, and oil filter procedure, exactly as IH expected your dealer to cover on delivery day. Run the engine at 1,750 RPM full load and top your fuel tank to 17 gallons: both factory numbers, not guesses. No more digging through forum posts for basic setup steps. Bookmarked and keyword-searchable, it opens on any device so you can bring the right answers straight to the tractor.
What's Inside This International Harvester Farmall 300, Farmall 300 Hi-Clear Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 8 | Delivery Report, General, Serial Numbers, Engine and Tractor |
| Description | 9-19 | Before Starting Your New Tractor, Fast-Hitch, Instruments and Controls, Preparing Your Tractor for Each Day's Work, Views of the Tractor |
| Operating Your Tractor | 20-43 | Driving the Tractor, Hitching the Tractor to the Implement, Operating a Distillate Engine on Distillate, Operating a Distillate Engine on Gasoline, Operating a Gasoline Engine |
| Lubrication | 44-54 | Greasing the Front Wheels, Lubrication Guide, Lubricating Oil and Grease Specifications, Oil Filter |
| Maintenance | 55-96 | Air Cleaning System, Battery Ignition Unit, Cooling System, Fuel System, Brakes, Clutches |
| Special Equipment | 97-110 | Fast-Hitch, Power Take-Off, Adjustable Wide-Tread Front Axle, Hydra-Touch System, Spark Arrester, Tachometer |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel Tank Capacity | 17 gal. | p. 111 |
| Engine Stroke | 4 inches | p. 111 |
| Maximum Full Load Engine Speed | 1,750 r.p.m. | p. 111 |
International Harvester Farmall 300, Farmall 300 Hi-Clear Common Problems This Manual Covers
Farmall 300 engine hard to start, cranks slowly or misfires on cold mornings p. 86
Check battery terminals for corrosion and verify charge before cranking. Inspect breaker point gap and spark plug condition per the ignition troubleshooting procedures on page 86. If the engine turns over slowly, load-test the battery and inspect the cranking motor connections. Fuel delivery issues on cold starts often trace to a restricted carburetor bowl — verify fuel flow at the carb inlet before condemning the ignition system.
Manual Section: Maintenance: Troubleshooting ProceduresThree-point hitch won't lift implements, transport lock appears engaged p. 89
Locate the Hydra-Touch system controls on the operator panel (page 10) and verify the transport lock knob is fully released — it sits near the seat spring tension knob and is easily confused. Confirm the hydraulic system has reached operating temperature before testing lift. Check Hydra-Touch troubleshooting on page 89; if lift force is low, inspect the hydraulic fluid level per the lubrication schedule on page 49.
Manual Section: Hydra-Touch System TroubleshootingPTO shaft won't attach or release from implement coupler p. 97
Pull the collar rearward to disengage the locking mechanism — do not push inward. With the collar held back, align the implement shaft splines and slide fully home until you feel the detent click. Verify PTO engagement only at low idle; maximum full-load engine speed is 1,750 r.p.m. and overspeeding the shaft during hookup accelerates collar wear. Full PTO installation and engagement procedures are in the Special Equipment section starting page 97.
Manual Section: Special EquipmentEngine knocking or loss of power under load, oil pressure warning active p. 86
Stop the engine immediately and check oil level before restarting. Review the engine troubleshooting chart on page 86 for knock and low-pressure causes: worn bearings, diluted oil, or a clogged oil filter are the common culprits. Drain and refill if the oil appears fuel-diluted (thin, smells like gasoline). Check the maintenance schedule on page 49 for oil change intervals and filter service. Do not run under load again until oil pressure is confirmed normal at operating temperature.
Manual Section: Maintenance: Troubleshooting ProceduresTransmission hard to shift, gears clash or slip out of engagement under draft p. 89
Verify clutch pedal free travel is within spec before diagnosing the gearbox — a dragging clutch causes most clash complaints. Inspect shifter fork and lever wear per the transmission troubleshooting procedures on page 89. If gears slip under load, check for worn detent springs in the shift mechanism. Lubricate the transmission per the lubrication guide on page 44; incorrect lubricant viscosity stiffens shifting especially in cold weather.
Manual Section: Transmission TroubleshootingRear brakes uneven or require excessive pedal travel to stop tractor p. 89
Adjust both brake pedals independently so free travel is equalized side-to-side before locking them together for road use. The brake adjustment and pedal free-travel procedure is on page 89. Uneven braking that pulls hard to one side usually means one drum has contaminated shoes — inspect for axle seal leaks at the lubrication check on page 44. After adjustment, test at low speed in a clear area before returning to field work.
Manual Section: Brake System TroubleshootingFrequently Asked Questions
How to reset the Fast Hitch lift on a Farmall 300?
To adjust the Fast Hitch lift, refer to the 'Adjusting the Working Depth' section. You can set the stroke limit collar on the piston rod to give the length of stroke that will correspond to a six-inch working depth. The implement will automatically stop at this depth when the collar comes against the limit stop nut.
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