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Allis Chalmers 720

Allis Chalmers 720 tractor
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The Allis Chalmers 720 is a garden tractor built by Simplicity and distributed by Allis Chalmers from 1975 to 1980. It features a 19.5 hp Onan 816cc 2-cylinder air-cooled gasoline engine, hydrostatic transmission by Sundstrand with infinite forward and reverse speeds 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 1.5 gallons with 500 psi pressure. The 720 supports independent front and rear PTOs with electric clutches. Dimensions include a 56 inch wheelbase, 83 inch length, 48 inch width, and 43.25 inch height, weighing 1300 lbs. Tires are available in agricultural and lawn/turf sizes. Attachments include a 60" mid-mount mower deck, snowblower, blade, front-end loader, and backhoe. Variants include the 720 Special economy model and the similar Simplicity 9020.
Allis Chalmers 720garden tractorSimplicityOnan enginehydrostatic transmissionlawn tractorattachmentsmower decksnowblowerbackhoe
Power19 hp
Founded60" deck
Model720

Technical Specifications

Detailed specifications and technical data for Allis Chalmers 720

Power

Power (gross):19.5 hp (14.5 kW)

Tires

Ag rear:8.00-16
Ag front:4.00x12
Lawn/turf rear:29x12.00-15
Lawn/turf front:20x8.00-10
Lawn/turf rear (alt):31x15.50-15
Lawn/turf front (alt):6.90/6.00-9

Engine

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

Capacity

Fuel:3.8 gal (14.4 L)
Hydraulic system:1.5 gal (5.7 L)

Variants

9020:similar Simplicity model
720 Special:economy model with no 3-point or rear PTO

Dimensions

Width:48 inches (121 cm)
Height:43.25 inches (109 cm)
Length:83 inches (210 cm)
Wheelbase:56 inches (142 cm)
Shipping weight:1300 lbs (589 kg)
Ground clearance:15 inches (38 cm)

Electrical

Ground:negative
Battery AH:53
Battery volts:12
Charging amps:20
Charging system:flywheel magneto

Hydraulics

Capacity:1.5 gal (5.7 L)
Pressure:500 psi (34.5 bar)
Pump flow:2.5 gpm (9.5 lpm)

Mechanical

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

Production

Type:Garden tractor
Built in:Port Washington, Wisconsin, USA
Distributor:Allis Chalmers
Manufacturer:Simplicity
Production years:1975 - 1980

Attachments

Overview:60" mid-mount mower deck, snowblower, blade, front-end loader, backhoe
60" Blade:Allis Chalmers front-mount, 60 inches width (152 cm), 225 lbs (102 kg), hydraulic-lift
60" Mower deck:mid-mount Allis Chalmers, 3-blade, 60 inches (152 cm) cutting width
52" Snow blower:Allis Chalmers, 52 inches width (132 cm), single-stage, front-mount, 340 lbs (154 kg)
Brantly LD6 Backhoe:Backhoe type Brantly LD6 Backhoe, Weight 925 lbs (419 kg), Transport height 72 inches (182 cm), Bucket width 8 inches (20 cm), 13 inches (33 cm), 16 inches (40 cm), 2-Foot flat digging depth 72 inches (182 cm), Reach from pivot 108 inches (274 cm), Swing Arc 135°, Bucket force 3000 lbs (1360 kg), Dipperstick force 1560 lbs (707 kg)
Simplicity 1690112 Loader:built by Ark, 400 lbs lift (full at pin) (181 kg), 650 lbs breakout (294 kg), 45° dump, 24.75 inches reach (dumped) (62 cm), 52 inches reach (ground) (132 cm), 8° rollback (ground line), 85 inches height (at pin) (215 cm), 66.5 inches clearance (dumped) (168 cm), Bucket width: 40 inches (101 cm) and 48 inches (121 cm)
Simplicity 1690157 Loader:built by Ark, 400 lbs lift (full at pin) (181 kg), 650 lbs breakout (294 kg), 43° dump, 23.5 inches reach (dumped) (59 cm), 51.5 inches reach (ground) (130 cm), 8° rollback (ground line), 86.5 inches height (at pin) (219 cm), 69 inches clearance (dumped) (175 cm), Bucket width: 48 inches (121 cm)

Transmission

Type:hydrostatic
Gears:infinite forward and reverse (3-range)
Manufacturer:Sundstrand
Oil capacity:6 qts (5.7 L)

Tractor hitch

Rear Type:0

Power Take-off (PTO)

Rear PTO:independent
Front PTO:independent
Rear PTO Type:2000
Front PTO Type:3600
Rear PTO Clutch:electric
Front PTO Clutch:electric

Related Models

Allis Chalmers 620

Model:620

Simplicity 9020

Model:9020