Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere LA120 Specs

JD LA120 Engine Specifications

Engine Model - Briggs Stratton 44
Engine Type - 4 Stroke OHV V-Twin
Max Power - 25 HP
Bore/Stroke - 3.12 / 2.89 in
Displacement - 724 cc (44.2 cu. in.)
Spark Plug Gap - 0.76 mm (0.030 in)
Spark Plug Torque - 20 Nm (15 lb·ft)
Cylinders - Twin
Oil Filter - Standard
Air Filter - Cartridge
Oil System - Pressure lubrication, Oil Cooler
Oil Capacity - 2 Qts
Intake - Low Vacuum Purge Port
Engine Cooling Type - Forced Air Cooling
Fuel - Gasoline
Crankcase, with Oil Filter - 1.9 L (2.0 qt)
Fuel Tank - 9 L (2.4 gal)
Starting Type - Electric Start
Charging System - 16 AMP W/Regulator
Starting System - Stater, 12 Volt Heavy Duty
Dimensions (L x W x H) - 18.25 x 19.25 x 20 in.
Muffler Included - No
Dry Engine Weight - 94 lbs.
Shaft Diameter - 1"
Shaft Length - 3-5/32" Total
Shaft I.D. Thread Size - 7/16"-20
Drilled and Tapped - Bolt Pattern - 4 Bolt

John Deere LA120 Transmission

Transmission Type - Hydrostatic
Transaxle Model - Tuff Torq T40
Forward Travel Speed - 0-8.9 km/h (0-5.5 mph)
Reverse Travel Speed - 0-5.2 km/h (0-3.2 mph)

Electrical System

Charging System - Regulated Circuit
Charging System Capacity - 9 Amp
Battery Voltage - 12 Volts
Battery Type - BCI Group U1

JD LA120 Tires

Size (Front) - 15x6.00-6
Size (Rear) - 20x10.00-8
Tire Pressure (Front) - 97 kPa (14 psi)
Tire Pressure (Rear) - 69 kPa (10 psi)

Dimensions

Height - 113 cm (44.5 in.)
Length (Overall) - 175 cm (68.75 in.)
Width (Mower Deck Chute Down) - 131 cm (51.75 in.)
Weight - 213 kg (470 lb)

John Deere LA120 Attachments

42 Inch Mower Deck

Blades Rotary - 2
Blade Nut Torque (w/ M12 Nut) - 75 Nm (55 lb-ft)
Blade Nut Torque (w/ 5/8 in. Nut) - 88 Nm (65 lb-ft)
Cutting Height (Approximately) - 25-102 mm (1 - 4 in.)
Cutting Width - 107 cm (42 in.)

48 Inch Mower Deck

Blades Rotary - 3
Blade Nut Torque (w/ M12 Nut) - 75 Nm (55 lb-ft)
Blade Nut Torque (w/ 5/8 in. Nut) - 88 Nm (65 lb-ft)
Cutting Height (Approximately) - 25-102 mm (1 - 4 in.)
Cutting Width - 122 cm (48 in.)

54 Inch Mower Deck

Blades Rotary - 3
Blade Nut Torque (w/ M12 Nut) - 75 Nm (55 lb-ft)
Blade Nut Torque (w/ 5/8 in. Nut) - 88 Nm (65 lb-ft)
Cutting Height (Approximately) - 25-102 mm (1 - 4 in.)
Cutting Width - 137 cm (54 in.)

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