Tractor · 1937Unverified
John Deere G Unstyled
John Deere G Unstyled — Model year 1937-19411942-19481948-1953 · 21 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
21 hp
Max power
20.6 kW
Weight
2268 kg
Hover a source tag to verify
Overview
ManufacturerJohn DeereReference
Row-Crop tractorReference
Built in Waterloo, Iowa, USAReference
Total built10,684 (Unstyled)Reference
The first 3,250 John Deere model G tractors (serial number 1000 through 4250) are known as "low radiator" Gs. Overheating issues resulted in a production change to a larger radiator beginning with serial number 4251. Many of the original tractors were refitted with the new radiator.Reference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Engine
John Deere 6.8L 2-cyl all fuelReference
Fuel tank64.3 LReference
Aux. fuel5.7 LReference
Drawbar (claimed)15.4 kWReference
Belt (claimed)23.4 kWReference
Plows3 (14-inch)Reference
Drawbar (tested)20.6 kWReference
Belt (tested)26.8 kWReference
John DeereReference
all fuelReference
2-cylinderReference
liquid-cooledReference
Displacement6.8 LReference
Bore/Stroke156 x 178 mmReference
Compression4.2:1Reference
Rated RPM975Reference
Firing order1-2Reference
Starter typehand crankReference
Oil capacity10.4 LReference
Coolant capacity41.6 LReference
Belt power (max)26.8 kWReference
Max power20.6 kWReference
Transmission
4-speed gearReference
TransmissionJohn DeereReference
TypegearReference
Gears4 forward and 1 reverseReference
Clutchdry discReference
PTO & Hydraulics
Rear PTOtransmissionReference
Rear PTO Type540 (1.75)Reference
Dimensions
Weight2268 kgReference
Front tire24x5Reference
Rear tire51.5x7Reference
Ag front24x5Reference
Ag front6.00-16Reference
Ag rear51.5x7Reference
Ag rear12x38 (13.6)Reference
Length342 cmReference
Width156 cmReference
Height213 cmReference
Operating weight2268 kgReference
G Serial Number Location
Serial number plate on the left side of the unstyled John Deere G, near the flywheel. Plate on the right side above pulley on the styled G.Reference
G Serial Numbers
19381000 (G Unstyled)Reference
19397734 (G Unstyled)Reference
19409321 (G Unstyled)Reference
194110489 (G Unstyled)Reference
194211561 (G Unstyled)Reference
194213000 (GM)Reference
194313418 (GM)Reference
1944NoneReference
194513748 (GM)Reference
194615780 (GM)Reference
194718553 (GM)Reference
Final22112 (GM)Reference
194723000 (G Early Styled)Reference
194825235 (G Early Styled)Reference
194826000 (G Late Styled)Reference
194932457 (G Late Styled)Reference
195039161 (G Late Styled)Reference
195146809 (G Late Styled)Reference
195253479 (G Late Styled)Reference
195363138 (G Late Styled)Reference
FAQ: How to read a serial number table.Reference
Test results
Distillate 4-speed 2WDNovember 15 - 19, 1937Link: Nebraska Tractor Test 295 fileReference
Belt fuel use (max)14.8 l/hourReference
Drawbar performanceReference
Gear 2 used for power test.Reference
Max pull1852 kgReference
Gear 1 used for pull test.Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.