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Simplicity Yeoman 637

Simplicity Yeoman 637 tractor
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The Simplicity Yeoman 637 is a 7 hp garden tractor introduced in 1972 as part of the Yeoman Series by Simplicity, a part of Allis Chalmers. It features a Briggs & Stratton 17000 1-cylinder air-cooled gasoline engine with 275 cc displacement. The tractor has a 3-speed belt-driven gear transmission with 3 forward and 1 reverse gears. It is two-wheel drive with manual steering and mechanical band brakes. The Yeoman 637 includes a mid PTO with manual clutch and an open operator station. Dimensions include a 36.5 inch wheelbase, 53.5 inch length, and weights ranging from 268 to 288 pounds depending on starter type. Tires are lawn/turf type with 4.10/3.50x6 front and 16-6.50x8 rear. Attachments available include a 32" mid-mount mower deck, snowblower, and blade. Electrical system is 12 volts with negative ground.
Simplicity Yeoman 637garden tractor7 hpBriggs & Stratton engine3-speed transmissionlawn tractor1972
Power-
Founded-
ModelYeoman 637

Technical Specifications

Detailed specifications and technical data for Simplicity Yeoman 637

Tires

Lawn/turf rear:16-6.50x8
Lawn/turf front:4.10/3.50x6

Engine

Type:gasoline, 1-cylinder, air-cooled vertical-shaft
Model:Briggs & Stratton 17000
Starter:manual recoil, electric Optional
Fuel tank:1 gal (3.8 L)
Bore/Stroke:3.00x2.375 inches (76 x 60 mm)
Displacement:275 cc (16.79 ci)
Oil capacity:1.1 qts (1.0 L)
Power (gross):7 hp (5.2 kW)
Starter volts:12

Chassis

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

Dimensions

Length:53.5 inches (135 cm)
Weight:268 lbs (recoil start) (121 kg), 288 lbs (electric start) (130 kg)
Wheelbase:36.5 inches (92 cm)
Rear tread:21.5 inches (54 cm)
Height (hood):28.5 inches (72 cm)
Height (steering wheel):33 inches (83 cm)

Electrical

Ground:negative
Battery volts:12

Production

Type:Garden tractor
Series:Yeoman Series
Manufacturer:Simplicity (a part of Allis Chalmers)
Year introduced:1972

Attachments

Overview:32" mid-mount mower deck, Snowblower, Blade
42" Blade:Simplicity 990299, front-mount, 42 inches width (106 cm), 15.75 inches height (40 cm), 15.75 inches lift (40 cm), Angling 30°, manual-lift, manual-angle
32" Mower deck:mid-mount Simplicity 990417, 3-blade with manual lift, Cutting width 32 inches (81 cm), Weight 90 lbs (40 kg), Overall width 35.875 inches (91 cm), Cut height 1.625 to 3.125 inch (4 to 7 cm)
32" Snow blower:Simplicity 990562, 32 inches width (81 cm), single-stage, Total width:33.5 inches (85 cm), front-mount, manual-lift

Transmission

Type:belt-driven gear
Gears:3 forward and 1 reverse
Speeds:3-speed gear

Power Take-off (PTO)

Type:Mid PTO
Clutch:manual
Operation:independent

Related Models

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