1979 International Cub Cadet 73, 106, 107, 126, 127 & 147 Service Manual
Engine teardown, torque specifications, and transmission repair data for International Cub Cadet tractor models — complete mechanical service procedures with special tools required.
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Sample pages from the 1979 International Cub Cadet 73, 106, 107, 126, 127 & 147 Service Manual manual
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Models Covered & Key Technical Specifications
International Cub Cadet 73, 106, 107, 126, 127 & 147 — 1979 Detailed Blueprint for Series Repository.
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Measured Horsepower Output: The Model 73 engine establishes a baseline of 7 hp, while Models 106 and 107 provide 10 hp, Models 126 and 127 reach 12 hp, and the Model 147 yields 14 hp peak power Architecture.
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Specific Compression Pressure: For optimal engine condition, 110–120 psi is dictates the acceptable compression range when measured under normal operating conditions Framework.
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Integral Spark Plug Gap: The specified clearance corresponds to 0.025 inch spacing between electrodes for proper ignition timing Norms.
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Operational Head Bolt Torque: The K-161 engine model requires 200 inch pounds while the K-241, K-301, and K-321 models yield 420 inch pounds clamping force Assembly.
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Established Connecting Rod Torque: K-161 engines reach 180 inch pounds, whereas K-241, K-301, and K-321 configurations are set to 280 inch pounds maximum Bounds.
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Authorized Spark Plug Installation: The spark plug fastener is set to 27 foot pounds of torque to secure proper seating in the cylinder head Topology.
Professional Workshop Service Manual & Technical Specifications
Full-Coverage Field Shop Manual: Tractor 1979 International Cub Cadet 73, 106, 107, 126, 127 & 147 - Comprehensive Tractor Service & Repair Manual Factory-Standards
Assembly-Group: Cub Cadet Models 73, 106, 107, 126, 127, 147 (1979) // Model-Designation: Single and Dual-Cylinder Air-Cooled Gasoline Engine / Hydrostatic and Gear-Drive Transmission Logic // Serial-Range: Complete technical specification documentation for all six model variants.
| Assessment-Element | Baseline | Architecture |
|---|---|---|
| Engine Systems | 7–14 HP Four-Cycle Air-Cooled Gasoline | Includes compression release, governor, and ignition timing reference data |
| Transmission Variants | Hydrostatic and Gear-Drive Configurations | Documented assembly sequences and adjustment procedures |
| Hydraulic Components | Variable Displacement Pump and Fixed Motor | Complete disassembly and reassembly specifications |
Reference chapters include engine overhaul and crankshaft timing, covers clutch and brake control systems, documents steering and front axle assembly, and incorporates hydrostatic transmission theory along with differential and rear axle service guidance.
Electrical system documentation covers motor-generator brush replacement, voltage regulator adjustment, contact point cleaning and gap specification, ignition timing sight hole procedure, and breaker point service methodology. Suspension service documentation covers front axle pivot mounting, steering knuckle bearing inspection, tie rod ball joint clearance, and wheel bearing press-fit installation sequence. Disassembly instructions are documented for carburetor bowl removal, float level measurement, idle mixture screw positioning, and high-speed fuel nozzle inspection. Wear limits are specified for piston ring end clearance, valve stem guide fit, connecting rod bearing running clearance, and crankpin diameter measurement tolerance. System operation descriptions cover governor speed control linkage adjustment, brake engagement pedal travel zones, clutch free-movement specification, and hydrostatic unit swash plate movement principles.
The manual documents torque specifications for engine head bolt assembly to ensure proper gasket compression and cylinder seal integrity.
Optional attachments are addressed, including creeper drive planetary reduction unit disassembly, front PTO clutch bearing and pressure spring adjustment, rear PTO removal and control rod disconnection, electric power lift mechanism troubleshooting, rotary tiller gearbox bearing snap ring retention, and snow thrower output shaft configuration. Mower deck service includes spindle rotor housing disassembly, blade sharpening angle and balancing procedure, drive belt idler tension adjustment, and level alignment measurement using gauge wheels and support bracket shimming. Complete wiring diagrams are provided for electric lighting and lift circuits, with detailed connector identification for motor-generator and solenoid control circuits.
The document includes standard bolt torque chart with grade identification, cadmium plating multiplier, and hardened steel adjustment factors for various fastener diameters and lengths.
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