Need a Case IH 1120 operator manual pdf straight from the factory? This 161-page OEM document (Part #9-19560) is exactly what Case IH published for the 1120 Tractor, covering every control and procedure from cold start to seasonal storage. You get a full safety section on ROPS folding, securing, and seat belt adjustment; a complete instruments chapter walking through every gauge and warning indicator on the dash; and step-by-step operating procedures for PTO engagement, differential lock, and three-point hitch operation. Lubrication intervals, fluid capacities, tire spacing, ballast tables, and a storage prep sequence round out the back half. The thermostat opens at approximately 180°F (82°C) and hits full flow at 203°F (95°C): real factory specs, not forum guesses. Your machine is down; get the right numbers on the first try. Bookmarked and searchable; pull it up on any device and jump straight to the section you need.
What's Inside This Case IH 1120, 1120 Tractor Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety/Decals | 6-20 | Safety Rules, Decals, Roll Over Protective Structure (ROPS), Folding the ROPS, Securing the ROPS, Seat Belt |
| Specifications | 21-30 | Diesel Engine, Power Train, Clutch, Hydraulic System, Travel Speeds, Approximate Measurements and Weights |
| Instruments/Controls | 31-47 | Tachometer and Hourmeter, Engine Coolant Temperature Gauge, Fuel Gauge, Starter Key Switch, Engine Speed Control Lever, Clutch Pedal |
| Operating Instructions | 48-75 | Starting the Engine, Run-In Procedure, Seat Belt Adjustment, Stopping the Engine, Power Takeoff (PTO), Differential Lock |
| Field Operation | 76-89 | Connecting Implement to Drawbar, Three Point Hitch System, Hitch System Adjust |
| Tires/Wheels/Spacing/Ballast | 90-105 | - |
| Lubrication/Filters/Fluids | 106-134 | - |
| Maintenance/ Adjustments | 135-141 | - |
| Electrical Systems | 142-154 | - |
| Storage | 155-156 | Engine Oil Preparation, Fuel System Preparation, Cooling System Preparation, Battery Preparation, Clutch Assembly Lock, Removing From Storage Procedure |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Action for oil pressure warning light | Shut off the engine immediately. Check for the cause. | p. 31 |
| Thermostat Start to Open Temperature | Approx. 180°F (82°C) | p. 20 |
| Thermostat Fully Open Temperature | 203°F (95°C) | p. 20 |
| Action for Engine Overheating (Red area on gauge) | Run the engine at 1500 RPM without load until the pointer indicates the green area. If the pointer still stays in the red area after three to five minutes, stop the engine immediately and check for the cause. | p. 30 |
| Engine Piston Displacement | 64.75 Cubic Inch (106 cm³) | p. 19 |
| Maximum Horsepower | 19 HP at 2500 RPM | p. 19 |
| Valve Clearance (Cold Engine) | 0.010 inch (0.25mm) | p. 19 |
| Cooling System Pressure Cap | 12.8 PSI (88.3 kPa) | p. 20 |
| Maximum Hydraulic System Pressure | 2133 PSI (14710 kPa) | p. 22 |
| Engine Oil Capacity (with filter change) | 3.7 QTS (3.5 Litres) | p. 105 |
| Fuel Tank Capacity | 5.3 Gallons (20 Litres) | p. 105 |
Case IH 1120, 1120 Tractor Common Problems This Manual Covers
Case IH 1120 tractor won't crank despite battery power and dash lights working p. 48
Verify the PTO lever is fully disengaged, the gear shift lever is in neutral, and you are seated firmly before depressing the clutch to crank. The startup sequence on page 48 lists every interlock condition the engine checks before cranking is allowed. Also confirm the fuel tank has fuel; total capacity is 5.3 Gallons (20 Litres).
Manual Section: Operating InstructionsComplete loss of dash lights and starter power when the key is turned p. 142
Check the main fuse and fusible link first; both are covered on page 142. Inspect battery cable terminals for green corrosion and verify the negative ground cable is tight at the frame. Before restarting after any electrical fault, confirm engine oil is at the full mark on the dipstick (capacity 3.7 QTS / 3.5 Litres with filter change).
Manual Section: Electrical SystemsEngine coolant temperature gauge pointer enters the red zone under load p. 30
Reduce load and run the engine at 1500 RPM without load until the pointer returns to the green area. If it stays in the red after 3 to 5 minutes, shut the engine off and investigate the cause as outlined on page 30. Inspect the radiator cap; it must hold 12.8 PSI (88.3 kPa) to seal the cooling system properly.
Manual Section: SpecificationsEngine oil pressure warning light comes on while operating the tractor p. 31
Shut the engine off immediately; page 31 confirms this is the required action the moment the indicator activates. Do not restart until you find the cause. Check engine oil on the dipstick with the tractor on level ground; the crankcase holds 3.7 QTS (3.5 Litres) with a filter change. Top up if low before any restart attempt.
Manual Section: Instruments/ControlsEngine cranks normally but won't fire after running the fuel tank dry
Fill the tank with clean diesel (5.3 Gallon / 20 Litre capacity), then bleed air from the fuel system before cranking again. Air trapped in the lines is the primary reason a diesel won't fire after running dry. Also inspect the fuel filter bowl for water contamination; drain it completely if the fuel looks milky or cloudy before you begin bleeding.
Manual Section: Lubrication/Filters/FluidsFrequently Asked Questions
How to reset the oil pressure warning light on Case IH 1120?
If the engine oil pressure indicator comes on, shut off the engine immediately and check for the cause. If the light remains on after starting, stop the engine, check the oil level in the crankcase, add oil if necessary, and restart. Do not operate the engine if the indicator is still on to prevent damage.
What are the replacement battery specifications for the Case IH 1120?
The battery replacement specification is one 12 Volt, 410 CCA Hybrid Battery, Group Size 65 Top Stud Terminals.
When should the fuel filter element be replaced on the Case IH 1120?
Replace the fuel filter element when there is a loss of power or misfiring occurs. The filter cannot be cleaned; it must be replaced. The fuel filter cup service interval is every 10 hours.
What interlock conditions must be met before the Case IH 1120 engine will crank?
Three interlock conditions must be met before the Case IH 1120 engine will crank: the PTO lever must be fully disengaged, the gear shift lever in neutral, and the operator seated firmly. All three must be satisfied before the starter will engage.
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