John Deere Unstyled D
1923 - 1953 Two-Cylinder Letter Series Standard-tread tractor
Series map:
D
27.0hp*
*Estimated engine power for comparison only.
Production Manufacturer John Deere
Standard-tread tractor Built in Waterloo, Iowa, USA Total built 160,000
Original price was $1,000 in 1924 The D had the longest run of any model of John Deere tractor, the styled and unstyled versions ran from March 1, 1923 until July 3, 1953. Serial numbers 31321 through 31412 are not model Ds, but are Waterloo Boy Ns which were built after model D production had begun.
John Deere D Engines John Deere 7.6L 2-cyl all fuel John Deere 8.2L 2-cyl all fuel Fuel tank 18 gal (early)68.1 L
23.5 gal (after 1931)88.9 L
Aux. fuel 2.5 gal (early)9.5 L
1.5 gal (after 1931)5.7 L
Engine details ...
John Deere D Power Drawbar (claimed) 15 hp11.2 kW
Belt (claimed) 27 hp20.1 kW
Plows 3 (14-inch)
Drawbar (tested) 29.90 hp22.3 kW
Belt (tested) 41.59 hp31.0 kW
Performance test details ...
Mechanical Two-wheel drive Manual steering Open operator station with steel pan seat.
Power Take-off (PTO) Rear PTO optional
Rear PTO Type 525
D Serial Number Location Serial number plate on the tractor's operator platform, ahead of seat mount.
D Serial Numbers 1924 30401 (model years)
1925 31280
1926 35309
1927 43410
1928 53388
1929 71645
1930 95367
1931 109944
1932 115509
1933 115665
1934 116273
1935 119100
1936 125079
1937 130700
1938 138413
1939 142300
Final 143799
FAQ: How to read a serial number table.
Belt Pulley Diameter 13.25 inches33 cm
Width 8.5 inches21 cm
RPM 900
Speed 3122 ft/min951.59 meters/min
Questions My father had two John Deere Model D's, my dad said the tractors ran on Distillate. I remember him mixing gas and diesel to fuel the tractors. Can you tell me the ratio of gas and diesel to mix the fuel to spark these ol' gems up again?
You can use gasoline. The D will run without problems on gasoline, it is what was used in the starting fuel tank.
Email: Peter@TractorData.com
References The John Deere Unstyled Letter Series by J.R. Hobbs Tractors 1918-1976 published by John Deere* Quality Equipment for Your Farming Operations published in 1929, by John Deere 15-27 Farm Tractor published in 1927, by John Deere Two-Cylinder Model D Tractor published in 1937, by John Deere Instructions for Model D (DIR-3C) published in 1930 *Publication contains known errors.
Page information Copyright 2025 TractorData.com® TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999. Peter Easterlund - owner/authorEmail: Peter@TractorData.com Updated on June 20, 2025
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Engine details ...
Transmission details ...
Performance test details ...
John Deere D photos...
Full dimensions and tires ...
