Ingersoll lawn tractors

Ingersoll 4120

The Ingersoll 4120 is a garden tractor produced from 1992 to 1993 as part of the 4100 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 in two ranges, and power steering. The tractor has a wheelbase of 48 inches, weighs 723 lbs, and includes mechanical band brakes and an open operator station. It supports various attachments including mid-mount mower decks, a blade, and a snowblower.

Power20 hp

Founded44/48/60" deck

Model4120

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Technical Specifications

Detailed specifications and technical data for Ingersoll 4120

Power

Power	20HP Onan 781cc 2-cyl gasoline

Tires

Rear tire	8.00-16
Front tire	16x6.50-8

Engine

Type	gasoline
Model	Onan P220G
Cooling	air-cooled horizontal-shaft horizontally-opposed
Starter	electric
Cylinders	2-cylinder
Rated RPM	3600
Bore/Stroke	3.25x2.875 inches (83 x 73 mm)
Displacement	781 cc (47.7 ci)
Power (gross)	20 hp (14.9 kW)
Starter volts	12

Capacity

Fuel	3 gal (11.4 L)
Hydraulic system	1.5 gal (5.7 L)

Features

Drive	Two-wheel drive
Brakes	Mechanical band brakes
Steering	Power steering
Operator station	Open operator station

Dimensions

Width	41 inches (104 cm)
Length	72 inches (182 cm)
Weight	723 lbs (327 kg)
Wheelbase	48 inches (121 cm)
Rear tread	31.5 inches (80 cm)
Front tread	33.5 inches (85 cm)
Height (hood)	38.5 inches (97 cm)
Ground clearance	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 system	flywheel alternator

Hydraulics

Type	open center
Capacity	1.5 gal (5.7 L)
Pressure	2800 psi (193.1 bar)
Pump flow	9.5 gpm (36.0 lpm)
Total flow	13.75 gpm (52.0 lpm)
Rear valves	2
Steering flow	2.25 gpm (8.5 lpm)
Steering press.	720 psi (49.6 bar)

Production

Series	4100 Series
Category	Garden tractor
Years produced	1992 - 1993
Manufactured in	Winneconne, Wisconsin, USA

Attachments

54" Blade	Ingersoll UB54, front-mount, 54 inches width (137 cm), hydraulic-lift, manual-angle
48" Snow blower	Ingersoll AHSB48, 48 inches width (121 cm), single-stage, front-mount, hydraulic-lift
44" mid-mount mower deck	Ingersoll AHRM44, 44 inches (111 cm), 3-blade, hydraulic lift, right-discharge
48" mid-mount mower deck	Ingersoll AHRM48, 48 inches (121 cm), 3-blade, hydraulic lift, right-discharge
60" mid-mount mower deck	Ingersoll AHRM60, 60 inches (152 cm), 3-blade, hydraulic lift, right-discharge

Transmission