Cub Cadet 73

Cub Cadet 73The Cub Cadet 73 is a lawn tractor model from the 1X2/1X3 series, manufactured from 1969 to 1971 by Cub Cadet (a part of International Harvester) in Louisville, Kentucky, USA. It was available in two-wheel drive (2WD) version.

The Cub Cadet 73 is equipped with a 262 cc (16.23 cu·in) single-cylinder gasoline engine with 73.0 mm (2.87 in) of the cylinder bore and 63.5 mm (2.5 in) of the piston stroke, and one of two transmissions: a shaft-driven gear type transmission with 3 forward and 1 reverse gear and with dry disc clutch (6 forward and 2 reverse gears with creeper).

The Cub Cadet 73 lawn tractor features:

  • The Kohler K161 gasoline engine which produces 7.1 PS (5.2 kW; 7.0 HP) at 3,600 rpm of horsepower
  • Manual steering
  • Dry disc brakes
  • Open operator station
  • Cub Cadet three-point rear hitch (optional)
  • Independent front PTO with 3.600 rpm
  • Transmission rear PTO with 515 rpm and with mechanical dry disc clutch

General specifications

General Specifications
ModelCub Cadet 73
Tractor typeLawn tractor
Production years1969-1971
FactoryLouisville, Kentucky, USA
Dimensions and weight
Length1,620 mm (63.8 in)
Width840 mm (33.1 in)
Height (steering wheel)1,000 mm (39.4 in)
Wheel base1,090 mm (42.9 in)
Ground clearance150 mm (5.9 in)
Weight258 kg (569 lbs)
Fuel capacity
Fuel tank capacity4.7 liters (1.2 US gal.; 1 Imp. gal)

Engine

Engine Specifications
Engine model Kohler K161S – electric starter
Kohler K161T – retractable starter
Engine type4-stroke, L-head, single-cylinder
Displacement262 cm3, (16.23 cu·in)
Bore and stroke73.025 mm X 63.5 mm (2.87 in X 2.5 in)
Fuel typeGasoline
Max. horsepower7.1 PS (5.2 kW; 7.0 HP) at 3,600 rpm
Cooling systemForced air
Lubricating systemSplash type
Fuel systemCarburetor
Ignition system Magneto ignition system for retractable starter
Battery ignition system for electric starter
Starting system Retractable starter or
Electric starter 12V
Valve clearance
Intake valve clearance:0.15-0.20 mm (0.0059-0.0079 in)
Exhaust valve clearance:0.43-0.48 mm (0.0169-0.0189 in)
Oil system
Lubrication system:Splash type
Oil type:API SF or SG
Recommended oil: Summer: SAE 30W
Winter: SAE 5W-20, 5W-30
Oil capacity:1.2 L (1.27 US. qt, 1.06 Imp. qt.)
Ignition system
Spark plug:Champion RJ8C
Spark plug gap:0.65 mm (0.0256 in)
Spark plug torque:27 N·m (2.8 kg·m, 19.9 ft·lb)
Ignition timing:20° B.T.D.C.
Compression pressure
Normal:7.7-8.4 kg/cm2 (7.6-8.3 bar, 110-120 psi) / 1,000 rpm

Transmission and chassis

Chassis, steering and brakes
Chassis4×2 2WD
Steering typeManual
BrakesDry disc
Transmission
Transmission manufacturer or model
Transmission typeShaft-driven gear type with dry disc clutch
Gears3 forward and 1 reverse
Speed Forward: 10.9 kmh (6.8 mph)
Reverse: 4.0 kmh (2.5 mph)
Transmission oil capacity3.3 L (0.9 US. gal, 0.7 Imp. gal.)
Transmission № 2
Transmission manufacturer or model
Transmission typeShaft-driven gear type with creeper and dry disc clutch
Gears6 forward and 2 reverse
Speed Forward: 10.9 kmh (6.8 mph)
Reverse: 4.0 kmh (2.5 mph)
Transmission oil capacity3.8 L (1 US. gal, 0.8 Imp. gal.)

Tires

Tires
Front tires Lawn/turf: 4.80×4.00-8
Rear tires Lawn/turf: 6-12

Rear Hitch

Three-Point Hitch
CategoryCub Cadet three-point (optional)
Control type
Lift capacity (at ends)

PTO (Power take-off shaft)

PTO
Front PTO typeIndependent
Front PTO speed3.600 rpm
Rear PTO typeTransmission with mechanical dry disc
Rear PTO speed515 rpm

Electrical system

Electrical system
GroundNegative
Charging systemGenerator
Charging amps15A
Battery12V

Serial numbers

Cub Cadet 73 serial numbers
1969307000
1970322858
1971373301
Final400000

Attachments

Cub Cadet: 38″ mower deck with 3-blade and manual lift (electric optional)
Cutting width960 mm (38 in)
Cutting height:20-100 mm (1-4 in)
Cub Cadet: 42″ mower deck with 3-blade and manual lift (electric optional)
Cutting width1,060 mm (42 in)
Cutting height:20-100 mm (1-4 in)
Cub Cadet: 48″ mower deck with 3-blade and manual lift (electric optional)
Cutting width1,210 mm (48 in)
Cutting height:20-100 mm (1-4 in)
Cub Cadet 42″ blade and manual lift and manual angle
Cutting width1,060 mm (42 in)
Height:400 mm (16 in)
Cub Cadet QA-36: 36″ front-mount snow blower with manual lift
Cleaning width910 mm (36 in)
Cub Cadet QA-42: 42″ front-mount snow blower with manual lift
Cleaning width1,060 mm (42 in)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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