The Jacobsen Chief-O-Matic 1200 53090 is a lawn tractor model with a rating of approximately 12 hp, a power output typical for its class. It was produced in 1966. The tractor features a 1-cylinder petrol air-cooled engine and two-wheel drive with a hydrostatic transmission. It is designed for use on areas of up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
12 hp
Catalogue coverage
Variants represented
2
Richest spec table
47 rows
Recorded power
12 hp
Transmissions
hydrostatic
Production years
1966-1966
Verified variants
0
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Overview
ManufacturerJacobsenReference
Garden tractorReference
Built in Racine, Wisconsin, USAReference
Two-wheel driveReference
Manual steeringReference
Mechanical band brakesReference
Open operator station.Reference
Engine
12HP Kohler 476cc 1-cyl gasolineReference
Kohler K301Reference
gasolineReference
1-cylinder horizontal-shaft-valveReference
air-cooledReference
Displacement29.07 ciReference
Bore/Stroke86 x 83 mmReference
Power8.9 kWReference
Air cleanerdryReference
Rated RPM3600Reference
StarterelectricReference
Starter volts12Reference
Transmission
hydrostaticReference
Typebelt-driven hydrostaticReference
Gearsinfinite forward and reverseReference
Dimensions
Wheelbase106 cmReference
Length154 cmReference
Width83 cmReference
Height (steering wheel)99 cmReference
Height (hood)87 cmReference
Ground clearance29 cmReference
Clearance (front axle)22 cmReference
Clearance (rear axle)15 cmReference
Front tread76 cmReference
Rear tread80 cmReference
Jacobsen Chief-O-Matic 1200 attachments
36" mid-mount mower deckReference
42" mid-mount mower deckReference
48" mid-mount mower deckReference
snowblowerReference
bladeReference
front-end loaderReference
Chief-O-Matic 1200 Serial Number Location
Serial number plate on the left-front side of tractor, above the front axle.Reference
Electrical
GroundnegativeReference
Battery volts12Reference
Attachment overview
36" mid-mount mower deckReference
42" mid-mount mower deckReference
48" mid-mount mower deckReference
SnowblowerReference
BladeReference
Front-end loaderReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
