Ingersoll lawn tractors

Ingersoll 4020

The Ingersoll 4020 is a garden tractor produced from 1989 to 2004 as part of the 4000 Series. It features a 20 hp Onan P220G 781cc 2-cylinder air-cooled gasoline engine, hydraulic Hy-Drive transmission with infinite forward and reverse speeds, and two-wheel drive. The tractor offers manual steering with a power steering variant (4020PS). It has an open operator station and supports various attachments including mid-mount mower decks, snowblower, and blade. The 4020 was built in Winneconne, Wisconsin, USA.

Power20 hp

Founded44/48/60" deck

Model4020

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Technical Specifications

Detailed specifications and technical data for Ingersoll 4020

Tires

Lawn/turf rear	32x8.00-16
Lawn/turf front	16x6.50-8

Engine

Type	gasoline
Model	Onan P220G
Cooling	air-cooled horizontal-shaft horizontally-opposed
Starter	electric
Cylinders	2-cylinder
Fuel tank	3 gal (11.4 L)
Sparkplug	Champion RS14YC
Bore/Stroke	3.25x2.875 inches (83 x 73 mm)
Compression	7:1
Displacement	781 cc (47.7 ci)
Power (gross)	20 hp (14.9 kW)
Sparkplug gap	0.025 inches (0.635 mm)
Starter volts	12
Intake valve clearance	0.005 inches Cold (0.127 mm)
Exhaust valve clearance	0.013 inches Cold (0.330 mm)

Variants

4020PS	power steering

Dimensions

Width	41 inches (104 cm)
Length	72 inches (182 cm)
Wheelbase	48 inches (121 cm)
Rear tread	31.5 inches (80 cm)
4020 Weight	765 lbs (347 kg)
Front tread	33.5 inches (85 cm)
4020PS Weight	805 lbs (365 kg)
Height (hood)	38.5 inches (97 cm)
Clearance (rear axle)	11 inches (27 cm)
Height (steering wheel)	43.5 inches (110 cm)

Electrical

Ground	negative
Battery CCA	300
Battery volts	12
Charging amps	20
Charging volts	12
Charging system	flywheel alternator

Hydraulics

Type	open center
Valves	2
Pressure	2100 psi (transmission) (144.8 bar)
Pressure lift	575 psi (lift) (39.6 bar)
4020 Pump flow	8 gpm (30.3 lpm)
4020PS Pump flow	9.5 gpm (36.0 lpm)

Mechanical

Drive	Two-wheel drive
4020 Steering	manual
4020PS Steering	power
Operator station	Open operator station

Production

Type	Garden tractor
Series	4000 Series
Built in	Winneconne, Wisconsin, USA
Years produced	1989 - 2004

Attachments

Blade	54 inches width (137 cm), front-mount (Ingersoll UB54)
Snowblower	48 inches width (121 cm), front-mount
44" mid-mount mower deck	Ingersoll RN44, 44 inches (111 cm), 3-blade
48" mid-mount mower deck	Ingersoll RM48, 48 inches (121 cm), 3-blade
60" mid-mount mower deck	Ingersoll RM60, 60 inches (152 cm), 3-blade

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