Cub Cadet 108 garden tractor specs and service data

The Cub Cadet 108 is a garden tractor model from the 1X8/1X9 series, manufactured from 1971 to 1974 by Cub Cadet (a part of International Harvester) in Louisville, Kentucky, USA. It was available in a two-wheel drive (2WD) version.

The Cub Cadet 108 is equipped with a 391 cc (23.9 cu·in) single-cylinder gasoline engine with 82.6 mm (3.25 in) of the cylinder bore and 73.0 mm (2.87 in) of the piston stroke, and gear type transmission with 3 forward and 1 reverse gear (6 forward and 2 reverse gears with creeper).

The Cub Cadet 108 garden tractor features:

The Kohler K241A gasoline engine which produces 10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm of horsepower
Manual steering
Dry disc brakes
Open operator station
Sleeve hitch (optional)
Independent front PTO with mechanical clutch – 3,600 rpm
Transmission rear PTO – 515 rpm

General specifications

General Specifications
Model	Cub Cadet 108
Tractor type	Garden tractor
Production years	1971-1974
Factory	Louisville, Kentucky, USA
Dimensions and weight
Length	1,750 mm (68.9 in)
Width	830 mm (32.7 in)
Height	1,040 mm (40.9 in)
Wheel base	1,110 mm (43.7 in)
Weight	–
Fuel capacity
Fuel tank capacity	7.6 liters (2 US gal.; 1.7 Imp. gal)

Engine

Engine Specifications
Engine model	Kohler K241AS
Engine type	4-stroke, L-head (side valve), single-cylinder
Displacement	391 cm³, (23.86 cu·in)
Bore and stroke	82.6 mm X 73.0 mm (3.25 in X 2.87 in)
Compression ratio	7.0:1
Max. horsepower	10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm
Torque	22.0 N·m (2.2 kg·m, 16.2 ft·lb) at 2,200 rpm
Cooling system	Forced air
Lubricating system	Splash type
Ignition system	Battery ignition system
Fuel system	Carburetor
Starting system	Electirc starter
Compression pressure
Normal:	7.7-8.4 kg/cm² (7.6-8.3 bar, 110-120 psi) / 1,000 rpm
Valve clearance
Intake valve clearance:	0.20-0.25 mm (0.0079-0.0098 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:	1.4 L (1.5 US. qt, 1.2 Imp. qt.)
Ignition system
Type:	Battery ignition system
Spark plug:	Champion RH10
Spark plug gap:	0.65 mm (0.0256 in)
Spark plug torque:	27 N·m (2.8 kg·m, 19.9 ft·lb)

Transmission and chassis

Chassis, steering and brakes
Chassis	4×2 2WD
Steering type	Manual
Brakes	Dry disc
Transmission
Transmission manufacturer or model	–
Transmission type	Gear type
Gears	3 forward and 1 reverse
Speed	Forward: 10,9 kmh (6.2 mph) Reverse: 4.0 kmh (2.5 mph)
Transmission oil capacity	3.3 L (0.9 US. gal, 0.7 Imp. gal.)
Transmission № 2
Transmission manufacturer or model	–
Transmission type	Creeper
Gears	6 forward and 2 reverse
Speed	Forward: 10.9 kmh (6.8 mph) Reverse: 4.0 kmh (2.5 mph)
Transmission oil capacity	Transmission: 3.3 L (0.9 US. gal, 0.7 Imp. gal.) Creeper: 0.5 L (0.1 US. gal, 0.1 Imp. gal.)

Tires

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

Rear Hitch

Three-Point Hitch
Category	Sleeve hitch
Control type	–
Lift capacity (at ends)	–

PTO (Power take-off shaft)

PTO
Front PTO type	Independent with mechanical clutch
Front PTO speed	3,600 rpm
Rear PTO type	Transmission with dry disc clutch
Rear PTO speed	515 rpm

Electrical system

Electrical system
Ground	Negative
Charging system	Generator
Charging amps	15A
Battery	12V

Serial numbers

Cub Cadet 108 serial numbers
1971	400001
1972	417643
1973	457305
1974	495749
Final	529811

Attachments

Cub Cadet 38″ mower deck with 3-blade
Cutting width	960 mm (38 in)
Cutting height:	20-100 mm (1-4 in)
Cub Cadet 44″ mower deck with 3-blade
Cutting width	1,110 mm (44 in)
Cutting height:	20-100 mm (1-4 in)
Cub Cadet 50″ mower deck
Cutting width	1,210 mm (48 in)
Cutting height:	20-100 mm (1-4 in)
Cub Cadet QA-36A: 36″ front-mount snow blower with manual lift
Cleaning width	910 mm (36 in)
Cub Cadet QA-42A: 42″ front-mount snow blower with manual lift
Cleaning width	1,060 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.

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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.

Cub Cadet 108