John Deere 112 garden tractor specs and service data

The John Deere 112 is a garden tractor model from the 100 series, manufactured from 1966 to 1974 by John Deere in Horicon, Wisconsin, USA. It was available in a two-wheel drive (2WD) version.

THe JD 112 used a gear type with variable pulley drive transmission with 4 forward and 1 reverse gear, manual steering, and an open operator station.

The John Deere 112 is equipped with one of three engines:

The Tecumseh HH100 (it was an original engine and used for the JD 112 through 1972): a 289 cc (23.7 cu·in) single-cylinder gasoline engine with 84.0 mm (3.31 in) of the cylinder bore and 70.0 mm (2.76 in) of the piston stroke. This engine produced 10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm of horsepower.
The Kohler K241AS (was introduced in 1969 as an optional engine): a 391 L (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. This engine produced 10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm of horsepower.
The Kohler K301AS (was introduced in 1972 and used until 1974): a 476 L (29.0 cu·in) single-cylinder gasoline engine with 85.7 mm (3.37 in) of the cylinder bore and 82.6 mm (3.25 in) of the piston stroke. This engine produced 12.2 PS (9.0 kW; 12.0 HP) rpm of horsepower.

General specifications

General Specifications
Model	John Deere 112
Tractor type	Garden tractor
Production years	1966-1974
Factory	Horicon, Wisconsin, USA
Dimensions and weight
Length	1,600 mm (63 in)
Width	1,050 mm (41.3 in)
Height	980 mm (38.6 in)
Wheel base	1,110 mm (43.7 in)
Weight	288 kg (635 lbs)
Fuel capacity
Fuel tank capacity	7.2 liters (1.9 US gal.; 1.6 Imp. gal)

Engine

Engine
Engine model	Techumseh HH100
Engine type	4-stroke, L-head (side valve), single-cylinder
Displacement	388 cm², (23.7 cu·in)
Bore and stroke	84.0 mm X 70.0 mm (3.31 in X 2.76 in)
Max. horsepower	10.2 PS (7.5 kW; 10.0 HP) at 3,600 rpm
Cooling system	Forced air
Lubricating system	Splash type
Ignition system	Solid state ignition system (CDI)
Fuel system	Carburetor
Starter	Electric
Valve clearance
Intake valve clearance:	0.254 mm (0.01 in)
Exhaust valve clearance:	0.508 mm (0.02 in)
Oil system
Lubrication system:	Splash type
Oil type:	API SF or SJ
Recommended oil:	SAE 10-W30
Oil capacity:	From 1966 to earlier 1970 (s/n 161,771): 1.2 L (1.25 US.qts, 1.1 Imp. qts) After earlier 1970 (from s/n 161,772): 1.4 L (1.5 US.qts, 1.2 Imp. qts)
Ignition system
Spark plug:	Champion J-8
Spark plug gap:	0.763 mm (0.03 in)
Spark plug torque:	30 N·m (3.1 kg·m, 22.1 ft·lb)

Engine Specifications
Engine model	Kohler K241
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)
Max. horsepower	10.2 PS (7.5 kW; 10.0 HP) at 3,600 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.qts, 1.2 Imp. qts)
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)

Engine Specifications
Engine model	Kohler K301
Engine type	4-stroke, L-head (side valve), single-cylinder
Displacement	476 cm³, (29.0 cu·in)
Bore and stroke	85.7 mm X 82.6 mm (3.37 in X 3.25 in)
Max. horsepower	12.2 PS (9.0 kW; 12.0 HP) at 3,600 rpm
Cooling system	Forced air
Lubricating system	Splash type
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.qts, 1.2 Imp. qts)
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	–
Transmission
Transmission manufacturer or model	Peerless 2300
Transmission type	Gear type with variable pulley drive
Gears	4 forward and 1 reverse
Speed	Forward: 11.4 kmh (7.1 mph) Reverse: 5.0 kmh (3.1 mph)
Transmission oil capacity	4.7 L (1.2 US. gal, 1 Imp. gal.)

Tires

Tires
Front tires	Lawn/turf: 16×6.50-8
Rear tires	Lawn/turf: 8-12

Electrical system

Electrical system
Ground	Negative
Charging system	–
Charging amps	–
Battery	12V

Hydraulic system

Hydraulic system
Hydraulic type	–
Hydraulic capacity	4.7 L (1.2 US. gal, 1 Imp. gal.)

Serial numbers

John Deere 112 serial numbers
1966	2551
1967	3551
1968	100001
1969	130001
1970	160000
1971	185001
1972	250001
1973	260001
1974	300001

Attachments

John Deere 39: 38″ mid-mount mower deck with 3-blade and right-discharge
Cutting width	960 mm (38 in)
John Deere 47: 46″ mid-mount mower deck
Cutting width	1,160 mm (46 in)
John Deere 43: 42″ front-mount blade
Width	1,060 mm (42 in)
John Deere 43C: 42″ front-mount blade with manual-lift and manual-angle
Width	1,060 mm (42 in)
John Deere 37/37A: 36″ front-mount snowblower
Width	910 mm (36 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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John Deere 112