🏷️ Basic Information

Make:

International Harvester

Model:

Cadet 80

Internal Model Designation:

Likely C-series designation for this era, specific to the Cadet line

👋 Introduction

Positioning:

The International Harvester Cadet 80 was positioned as a light-duty, compact utility tractor, suitable for small farms, residential property maintenance, and hobby farming.

Competitors:

Competed with similar compact tractors from John Deere (e.g., 1020), Ford (e.g., 1100/1110), Massey Ferguson, and Allis-Chalmers in its class.

Features:

Simplicity of design, ease of operation for its era, robust build quality characteristic of IH, and versatility for various tasks with available implements.

📋 Manual Details

Primary Coverage:

Service and repair of the International Harvester Cadet 80 tractor

Secondary Coverage:

Maintenance, troubleshooting, diagnostics, and rebuilding procedures

Estimated Page Count:

Industry standard for WSMs of this era often ranges from 300-600 pages, depending on detail and included schematics. Specific count not provided.

Type:

Workshop Service Manual (WSM) / Service Repair Manual

Language:

English (presumed, standard for IH manuals of this period)

Format:

PDF Download

📖 Manual Coverage

Engine:

Detailed coverage of the engine assembly, including teardown, inspection, assembly, and overhaul. Specifics on carburetion, ignition, cooling, and lubrication systems.

Fuel System:

Components such as fuel tank, fuel lines, fuel filter, and carburetor servicing and adjustment.

Ignition System:

Magneto or distributor service, spark plug specifications, timing procedures.

Cooling System:

Radiator, water pump, thermostat, and related components, including flushing and repair.

Lubrication System:

Oil pump, oil filter, oil passages, and recommended lubrication schedules.

Transmission:

Complete overhaul and repair procedures for the gearbox, including gear inspection, bearing replacement, and shift linkage adjustment.

Clutch:

Service, adjustment, and replacement of the clutch assembly.

Drive Axle And Differential:

Rear axle assembly, differential service, gear backlash adjustment, and bearing replacement.

Braking System:

Service and adjustment of the braking system, including brake shoe replacement and drum servicing.

Steering System:

Steering gear service, tie rod ends, drag links, and adjustment procedures.

Hydraulic System:

Operation and service of the hydraulic lift system (if equipped), including pump, control valve, and cylinders.

Electrical System:

Wiring diagrams, generator/alternator service, battery maintenance, lighting, and starter motor.

Pto System:

Power Take-Off (PTO) unit service and maintenance.

Body And Frame:

Sheet metal repair, chassis maintenance, and mounting procedures.

Routine Maintenance:

Lubrication points, fluid level checks, filter changes, and general tune-up procedures.

Troubleshooting:

Diagnostic charts and symptom-based troubleshooting guides for common issues.

Engine Overhaul:

Step-by-step instructions for complete engine disassembly, cleaning, inspection, measurement, and reassembly.

Transmission Rebuild:

Detailed procedures for gearbox disassembly, component replacement, and reassembly.

Hydraulic System Repair:

Troubleshooting and repair of hydraulic leaks, pump failures, and control issues.

Electrical Diagnostics:

Testing of electrical components, starter, generator/alternator, and wiring continuity.

Brake Adjustment:

Proper procedures for adjusting brake linkages and ensuring effective braking.

Steering Alignment:

Guidelines for checking and adjusting steering geometry.

Depth:

Comprehensive, covering complete engine and transmission rebuilds, advanced diagnostics, and detailed component-level repairs.

Specification Detail:

Includes critical torque specifications, clearances, and tolerances for engine and drivetrain components.

Diagnostic Tools:

May mention specialized tools or gauges required for specific diagnostic and repair procedures.

📊 Manual Specifications

Format Details:

PDF (Portable Document Format), enabling digital access and searchability.

Quality:

Professional quality in-depth download, implies clear text and legible diagrams.

Binding:

N/A (Digital download format)

Paper:

N/A (Digital download format)

⚙️ Engine Specifications

Engine Model:

Likely IH-built gasoline engine. Specific model designation not provided in product info, but often small displacement 2 or 3-cylinder units.

Engine Type:

4-stroke, naturally aspirated, gasoline (common for this model)

Displacement:

Likely in the range of 80-120 cubic inches (1.3-2.0 Liters). Specific data not in product info.

Horsepower Rating:

Estimated around 15-25 PTO horsepower. Specific rating not provided.

Torque Rating:

Not specified in product information.

Carburetor Type:

Likely a single-barrel carburetor, brand such as Marvel-Schebler or Zenith common.

Fuel Type:

Unleaded gasoline

Cooling Method:

Liquid-cooled (water pump and radiator)

🔧 Transmission

Transmission Type:

Manual transmission, likely with 4 or 6 forward speeds and 1 or 2 reverse speeds.

Optional Gearbox:

Unlikely to have significant optional transmission types for this basic model.

Drive System:

2WD (Rear Wheel Drive)

Gear Selection:

Sliding mesh gears with a main shift lever and potentially a range selector.

📐 Dimensions

Wheelbase:

Varies by specific configuration but typically around 60-70 inches.

Operating Weight:

Typically in the range of 1500-2500 lbs (680-1135 kg).

Drawbar Pull Capacity:

Not specified in product information but rated for light draft work.

🛡️ Safety Features

Safety Standards:

Designed to meet agricultural safety standards of its era. ROPS (Roll Over Protection System) and seat belts were not standard but could be aftermarket additions.

Braking System Type:

Mechanical drum brakes or expanding shoe brakes.

Operator Station:

Open operator station, with basic controls and seating.

💡 Technology Features

Features:

Not applicable. This is a utilitarian tractor with no infotainment features.

Features:

Not applicable. No advanced driver assistance systems present.

Features:

Not applicable. No connectivity features available.

🔧 Maintenance

Engine Oil Change:

Typically every 50-100 operating hours, or annually. Specific viscosity grade provided in the manual.

Air Filter Cleaning:

Check and clean as needed based on operating environment; replace as per manual recommendations.

Fuel Filter Replacement:

Recommended replacement at annual service or as indicated by engine performance.

Engine Oil Viscosity:

Likely SAE 30 or 10W-30 depending on climate. Manual will specify exact grade and API service classification.

Transmission Hydraulic Fluid:

Likely IH Hy-Trans fluid or equivalent universal tractor transmission fluid (UTTF). Manual will specify.

Coolant Type:

Ethylene glycol-based antifreeze mixed with water in a 50/50 ratio. Manual will specify concentrations and types.

Common Problems:

Wear in the transmission gears and synchros, carburetor issues (clogging, float adjustment), ignition system component failure (magneto points, condenser), hydraulic system leaks, and potential cooling system leaks.

Carburetor Tuning:

Carburetors on older tractors often require periodic adjustment due to wear or debris.

Hydraulic Pump Wear:

The hydraulic pump can wear over time, leading to reduced lift capacity or slower response.

📚 Vehicle History

Brand History:

International Harvester (IH) was a prominent American manufacturer of agricultural and construction equipment, known for its durable and reliable machinery.

Cadet Line History:

The Cadet line began with smaller garden tractors and evolved into compact utility tractors like the Cadet 80, serving a market segment seeking more capability than a garden tractor but less than a full-size farm tractor.

Production Period:

Likely produced in the 1960s or early 1970s, aligning with the 'Cadet' naming convention before the Farmall branding became more dominant for utility tractors.

🏆 Awards & Recognition

Industry Awards:

No specific awards are typically associated with individual tractor models of this era, rather the reputation of the manufacturer (IH) for building robust equipment.