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Jacobsen Chief 100

Jacobsen Chief 100 tractor
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The Jacobsen Chief 100 is a garden tractor produced from 1961 to 1963 by Jacobsen in Racine, Wisconsin, USA. It features a 7 hp Kohler K161S 265cc 1-cylinder air-cooled gasoline engine with manual or optional electric start. The tractor has a 3-speed belt-driven gear transmission with 3 forward and 1 reverse gears, two-wheel drive, and manual steering. It has a wheelbase of 42 inches, length of 61 inches, width of 33 inches, and ground clearance of 7 inches. Tires are 4.00/4.80-8 front and 6.00-12 rear. Electrical system is 12 volts with negative ground. Attachments include a 36" mid-mount mower deck, snowblower, and blade. The original price was $570 in 1961.
Jacobsen Chief 100garden tractorKohler K161S engine7 hp3-speed transmissionlawn tractor196119621963
Power-
Founded-
ModelChief 100

Technical Specifications

Detailed specifications and technical data for Jacobsen Chief 100

Tires

Rear tire:6.00-12
Front tire:4.00/4.80-8

Engine

Type:gasoline
Model:Kohler K161S
Power:7 hp (5.2 kW)
Cooling:air-cooled horizontal-shaft
Starter:manual recoil, electric Optional
Cylinders:1-cylinder
Bore/Stroke:2.875x2.50 inches (73 x 64 mm)
Displacement:265 cc (16.22 ci)
Starter volts:12

Variants

100A:electric start
100B:manual start

Dimensions

Width:33 inches (83 cm)
Length:61 inches (154 cm)
Wheelbase:42 inches (106 cm)
Ground clearance:7 inches (17 cm)

Electrical

Ground:negative
Battery volts:12

Mechanical

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

Production

Type:Garden tractor
Built in:Racine, Wisconsin, USA
Manufacturer:Jacobsen
Original price:$570 in 1961
Years produced:1961 - 1963

Attachments

Blade:42 inches width (106 cm), front-mount
Snowblower:36 inches width (91 cm), front-mount
36" mid-mount mower deck:2-blade with manual lift, 36 inches (91 cm) cutting width

Transmission

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

Serial Numbers

Location:Serial number tag on the lower left of the tractor, above the front axle.