Jacobsen Chief-O-Matic 1200 53090
The Jacobsen Chief-O-Matic 1200 53090 is a tractor produced by Jacobsen Lawn Tractors. It is equipped with a 476 cc 29.07 ci engine. The listed engine power is Gasoline (listed): 12 hp / 8.9 kW. Transmission: infinite forward and reverse.
Engine Power
Gasoline (listed): 12 hp / 8.9 kW
Fuel & Capacities
Gasoline
Transmission
infinite forward and reverse
Overview
![]() | 1966
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Jacobsen |
Garden tractor | |
Built in Racine, Wisconsin, USA | |
Jacobsen Chief-O-Matic 1200 Engine | |
|---|---|
12HP Kohler 476cc 1-cyl gasoline | |
Engine details ... |
Jacobsen Chief-O-Matic 1200 Transmission | |
|---|---|
hydrostatic | |
Transmission details ... |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Mechanical band brakes | |
Open operator station. |
Dimensions & Tires | |
|---|---|
Wheelbase | 42 inches
106 cm |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 476 cc / 29.07 ci Gasoline
Manufacturer | Kohler K301 |
Fuel Type | Gasoline |
Configuration | 1-cylinder horizontal-shaft-valve, air-cooled |
Displacement | 476 cc
29.07 ci |
Bore/Stroke | 3.375x3.25 inches
86 x 83 mm |
Power | 12 hp
8.9 kW |
Air cleaner | dry |
Rated RPM | 3600 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — infinite forward and reverse belt-driven hydrostatic
Type | belt-driven hydrostatic |
Gears | infinite forward and reverse |
Dimensions
Jacobsen Chief-O-Matic 1200 Tires |
|---|
Dimensions | |
|---|---|
Wheelbase | 42 inches
106 cm |
Length | 61 inches
154 cm |
Width | 33 inches
83 cm |
Height (steering wheel) | 39 inches
99 cm |
Height (hood) | 34.5 inches
87 cm |
Ground clearance | 11.75 inches (frame)
29 cm |
Clearance (front axle) | 8.75 inches
22 cm |
Clearance (rear axle) | 6.25 inches
15 cm |
Front tread | 30 inches
76 cm |
Rear tread | 31.5 inches
80 cm |
Attachments
Attachment overview | |
|---|---|
36" mid-mount mower deck | |
42" mid-mount mower deck | |
48" mid-mount mower deck | |
Snowblower | |
Blade | |
Front-end loader | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Jacobsen Lawn Tractors Jacobsen Chief-O-Matic 1200 53090.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Jacobsen Lawn Tractors Jacobsen Chief-O-Matic 1200 53090 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Jacobsen Lawn Tractors Jacobsen Chief-O-Matic 1200 53090.
Converted Equivalents:
Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS
Related models
Jacobsen lawn tractors 100
- Power:
- 10
- Production years:
- 1977 - 1980
Jacobsen lawn tractors 1000
- Power:
- 10
- Production years:
- 1977 - 1980
Jacobsen lawn tractors 1060
- Power:
- 10
- Production years:
- 1975 - 1976
Jacobsen lawn tractors Chief 10
- Power:
- 10
- Production years:
- 1963 - 1963
Jacobsen lawn tractors Chief 1000
- Power:
- 10
- Production years:
- 1964 - 1971

