Jacobsen GT-12H 53275
The Jacobsen GT-12H 53275 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 (gross): 12 hp / 8.9 kW. Transmission: infinite forward and reverse (2-range).
Engine Power
Gasoline (gross): 12 hp / 8.9 kW
Fuel & Capacities
2 gal
7.6 L
Transmission
infinite forward and reverse (2-range)
Overview
![]() | 1972 - 1976
GT SeriesGarden tractor
GT Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Jacobsen |
Garden tractor | |
Built in Racine, Wisconsin, USA | |
Variants | |
|---|---|
GT-12 | gear drive |
GT-12H | hydrostatic |
Jacobsen GT-12H Engine | |
|---|---|
12HP Kohler 476cc 1-cyl gasoline | |
Fuel tank | 2 gal
7.6 L |
Engine details ... | |
Jacobsen GT-12H Transmission | |
|---|---|
hydrostatic | |
Transmission details ... |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Mechanical band brakes | |
Open operator station. Vinyl weather cab optional. |
Tractor hitch | |
|---|---|
Rear Type | 0 OptOptional |
Type | sleeve hitch OptOptional |
Power Take-off (PTO) | |
|---|---|
Front PTO | independent |
Clutch | electric |
Front PTO Type | pulley |
Dimensions & Tires | |
|---|---|
Wheelbase | 46 inches
116 cm |
Front tire | 16x6.50-8 |
Rear tire | 23x8.50-12 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Charging amps | 15 |
Battery volts | 12 |
Battery AH | 24 |
References | |
|---|---|
![]() | |
The GT Garden Tractor published in 1972, by Jacobsen | |
GT Tractors published in 1974, by Jacobsen |
Engine
Engine Detail — 476 cc / 29.07 ci Gasoline
Manufacturer | Kohler K301AS |
Fuel Type | Gasoline |
Configuration | 1-cylinder, air-cooled horizontal-shaft |
Displacement | 476 cc
29.07 ci |
Bore/Stroke | 3.375x3.25 inches
86 x 83 mm |
Power (gross) | 12 hp
8.9 kW |
Rated RPM | 3600 |
Starter volts | 12 |
Oil capacity | 2.25 qts
2.1 L |
Transmission
Transmission — infinite forward and reverse (2-range) shaft-driven hydrostatic
Type | shaft-driven hydrostatic |
Gears | infinite forward and reverse (2-range) |
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Dimensions
Jacobsen GT-12H Tires | |
|---|---|
Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x8.50-12 |
Dimensions | |
|---|---|
Wheelbase | 46 inches
116 cm |
Length | 71.7 inches
182 cm |
Width | 38 inches
96 cm |
Height | 42 inches
106 cm |
Clearance (front axle) | 9.125 inches
23 cm |
Clearance (rear axle) | 6.625 inches
16 cm |
Attachments
Attachment overview | |
|---|---|
50" mid-mount mower deck | |
Snowblower | |
Blade | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
50" Mower deck | |
|---|---|
Type | mid-mount Jacobsen |
3-blade with manual lift | |
Cutting width | 50 inches
127 cm |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Jacobsen Lawn Tractors Jacobsen GT-12H 53275.
Estimated Continuous Field Runtime: 3.2 hrs
Approximately 3.2 hours of continuous field operation at ~75% rated power on a full tank (2 gal / 7.6 L).
Estimated 75% Load Fuel Burn~0.6 gal/hr (2.4 L/hr)
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 GT-12H 53275 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Jacobsen Lawn Tractors Jacobsen GT-12H 53275.
Converted Equivalents:
Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS
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