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Allis Chalmers 620

The Allis Chalmers 620 is a garden tractor produced from 1973 to 1975, built by Simplicity and distributed by Allis Chalmers. It features a 19.5 hp Onan 816cc 2-cylinder gasoline engine, hydrostatic transmission by Sundstrand with infinite forward and reverse gears in 3 ranges, and two-wheel drive with manual steering and disc brakes. The tractor has an open operator station and is built in Port Washington, Wisconsin, USA. It has a fuel capacity of 3.8 gallons and a hydraulic system capacity of 1.25 gallons with 500 psi pressure. The tractor supports optional independent rear PTO and independent front PTO, both with electric clutches. Dimensions include a 56-inch wheelbase, 83-inch length, 48-inch width, and 43.25-inch height, weighing 1300 lbs. Tires include lawn/turf and agricultural options. Attachments include a 60-inch mid-mount mower deck, snowblower, blade, and front-end loaders with various specifications. Electrical system is negative ground with 20 amps charging and 12 volts battery.
Allis Chalmers 620garden tractorSimplicityOnan enginehydrostatic transmissiontractor specificationsmower deckfront-end loaderPTOtractor dimensions
Power19 hp
Founded60" deck
Model620

Technical Specifications

Detailed specifications and technical data for Allis Chalmers 620

Engine

Cooling:air-cooled horizontal-shaft opposed-twin
Cylinders:2-cylinder
Fuel type:gasoline
Rated RPM:3600
Air cleaner:paper element
Bore/Stroke:3.25x3.00 inches (83 x 76 mm)
Displacement:816 cc (49.8 ci)
Engine model:Onan CCKB
Oil capacity:3.5 qts (3.3 L)
Power (gross):19.5 hp (14.5 kW)
Starter volts:12
Compression ratio:7:1

Capacity

Fuel:3.8 gal (14.4 L)
Hydraulic system:1.25 gal (4.7 L)

Overview

Built in:Port Washington, Wisconsin, USA
Category:Garden tractor
Distributor:Allis Chalmers
Manufacturer:Simplicity
Production years:1973 - 1975

Variants

4041:similar Simplicity model

Electrical

Ground:negative
Battery volts:12
Charging amps:20

Hydraulics

Capacity:1.25 gal (4.7 L)
Pressure:500 psi (34.5 bar)
Pump flow:2.25 gpm (8.5 lpm)

Mechanical

Drive:Two-wheel drive
Brakes:Disc brakes
Steering:Manual steering
Operator station:Open operator station

Attachments

Blade:60 inches width (152 cm), front-mount, hydraulic-lift, manual-angle
Cut height:1.625 to 3 inch (4 to 7 cm)
Snowblower:52 inches width (132 cm), single-stage, front-mount, hydraulic-lift
Cutting width:60 inches (152 cm)
Front-end loader:[object Object],[object Object]
60" mid-mount mower deck:3-blade with hydraulic lift

Transmission

Type:hydrostatic
Gears:infinite forward and reverse (3-range)
Manufacturer:Sundstrand

Tractor hitch

Rear Type:0

Serial Numbers

Location:Serial number decal on the right side of the tractor frame, above the foot rest.

Dimensions & Tires

Width:48 inches (121 cm)
Height:43.25 inches (109 cm)
Length:83 inches (210 cm)
Rear tire:29x12.50-15
Wheelbase:56 inches (142 cm)
Front tire:20x8-10
Ag rear tire:8x16
Ag front tire:4.00x12
Shipping weight:1300 lbs (589 kg)
Ground clearance:15 inches (38 cm)
Lawn/turf rear tire:29x12.50-15
Lawn/turf front tire:20x8-10

Power Take-off (PTO)

Rear PTO:independent Optional
Front PTO:independent
Clutch (rear):electric
Rear PTO Type:2000
Clutch (front):electric
Front PTO Type:3600