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Tractor · 1937Unverified

John Deere G Unstyled

Name: John Deere G Unstyled
Brand: John Deere

John Deere G Unstyled — Model year 1937-19411942-19481948-1953 · 21 hp. Reference specifications; pending source verification.

The John Deere G Unstyled is a tractor with a rated power of 21 hp, positioned at the lighter end of its class. Manufactured from 1937 to 1953, this model features a 2-cylinder liquid-cooled engine, paired with two-wheel drive and a 4-speed gearbox. It has an operating weight of 2268 kg and is suitable for operations covering up to 200 acres.

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

Catalogue coverage

Variants represented

Richest spec table

76 rows

Recorded power

21 hp

Recorded weight

2268 kg

Transmissions

4-speed gear

Production years

1937-1953

Verified variants

1 linked source document displayed

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.

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