John Deere A 
 1934 - 1952 Two-Cylinder Letter Series Row-Crop tractor 
 
Series map:
B
A
16.0hp*
26.3hp*
*Estimated engine power for comparison only.
 
 
Production Manufacturer John Deere
 Row-Crop tractor Built in Waterloo, Iowa, USA Total built 300,000
 The A was John Deere's first true row-crop tractor, replacing the GP. There were several variants of the A. The A was the row-crop model. The AR was a standard (or fixed) tread model. The AO was an orchard model, with no exhaust stack and shielded fenders. There was also the AI industrial model, the AN with narrow front, the AW wide front, and the high-crop ANH and AWH. The model A was the first Deere tractor to come from the factory with rubber tires.  
 
Variants A Row-crop
  AR Standard front axle
  AO Orchard
  AOS narrow orchard
  AW Adjustable wide-front
  AN Single front wheel
  AWH High-crop, adjustable wide-front
  ANH High-crop, single-front wheel
  
 
John Deere A Power Drawbar (claimed) 18 hp13.4 kW 
 Belt (claimed) 24 hp17.9 kW 
 Plows 2 * 14-inch  Drawbar (tested) 18.72 hp14.0 kW 
 PTO (tested) 23.63 hp17.6 kW 
 Belt (tested) 24.71 hp18.4 kW 
 Performance test details ...  
 
Mechanical Two-wheel drive Manual  steering Differential mechanical expanding shoe brakes Open operator station with steel pan seat.  
 
Power Take-off (PTO) Rear PTO transmission
 Rear PTO Type 540
  
 
A Serial Number Location Serial number plate on the left side of tractor, above the flywheel.  
 
A Serial Numbers 1934 410000
 1935 412866
 1936 424025
 1937 442151
 1938 466787
 1939 477000
 1940 488000
 1941 499000
 1942 510239
 1943 520004
 1944 524423
 1945 542700
 1946 555334
 1947 569610
 1948 587349
 1949 611921
 1950 640246
 1951 666307
 1952 682602
 Final 703384
 FAQ: How to read a serial number table.  
 
References The John Deere Unstyled Letter Series by J.R. Hobbs Instructions for General Purpose Tractor Model A (DIR 103) published in 1934 Tractors 1918-1976 published by John Deere*  Models A & B General Purpose Tractors published in 1936, by John Deere  *Publication contains known errors.  
 
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