Cub Cadet Tractor 72/104/105/124/125 1967–1969 Service Manual (P/N GSS-1398)

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Cub Cadet Models Covered & Key Technical Specifications

Models: International Cub Cadet 72, 104, 105, 124, 125

Sub-models / Variants: Gear Drive (72, 104, 124), Hydrostatic Transmission (105, 125)

Model Years: 1967–1969

Technical Data:

  • Engine (Model 72): Kohler K-161S/T, 16.23 cu. in. displacement, 7.0 hp @ 3600 rpm

  • Engine (Models 104/105): Kohler K-241AS, 23.9 cu. in. displacement, 10 hp @ 3600 rpm

  • Engine (Models 124/125): Kohler K-301AS, 29.1 cu. in. displacement, 12 hp @ 3600 rpm

  • Compression Pressure: 110–120 psi

  • Spark Plug Gap: 0.025 inch

  • Fuel Tank Capacity: 3.5 gallons

  • Clutch (Standard): Single dry disc, spring loaded, 4.5 inch diameter

  • Transmission (Gear Drive): Selective sliding spur gears, 3 forward / 1 reverse speeds

  • Head Bolt Torque (K-161): 200 in-lbs

  • Head Bolt Torque (K-241/K-301): 420 in-lbs

  • Spark Plug Torque: 27 ft-lbs

Technical Specifications
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Document Number / Seller:
25291 / John Parker
File Size:
22.34 MB
File Type:
PDF
Language:
English
Pages:
121
Printable:
Yes
Category:
Tractor
Last updated / verified
May 29, 2026

Cub Cadet Manual Features & Content Preview

  • Covers 1967–1969 International Cub Cadet models 72, 104, 105, 124, and 125 (Gear-drive and Hydrostatic)
  • Official International Harvester GSS-1398 Blue Ribbon Service Manual (Original 1967 edition)
  • 121 pages featuring 78 high-resolution technical illustrations, exploded views, and wiring schematics

Engine and Chassis Coverage

This technical reference details the exact factory specifications needed to service the Kohler K-161, K-241, and K-301 power plants used across the 72 through 125 tractor series. It provides a complete breakdown of engine removal, disassembly, and crankshaft inspection. Mechanics will find precise data for piston ring gaps, valve clearances, and cylinder bore tolerances.

For the 105 and 125 models, the guide covers hydrostatic transmission principles, including charge pump service and relief valve adjustments. Servicing pressurized hydrostatic drives and heavy moving components involves inherent physical risks; this documentation provides the mandatory factory safety parameters and securing procedures required to perform this maintenance safely.

The chassis section maps out the steering assembly geometry, including cam and lever ball-joint adjustments and front axle construction. Exploded diagrams show the internal workings of the gear-drive transmission, reduction drive housings, and brake discs, providing the exact parameters for clutch spring tension and pedal adjustments to restore factory shifting and braking integrity.

Specification Highlights

  • K-161 head bolt torque: 200 in-lbs
  • Kohler K-161S intake valve clearance (cold): 0.006–0.008 inches
  • Hydrostatic charge pump relief valve spring test length: 0.525 inches
Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

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