The Orchard 60 (O-60) was an additional variant for fruit growers, using the A powertrain. Only 530 "All-Fuel" O-60's were made, 285 gasoline O-60's, and only 45 LP Gas O-60's. John Deere 620 The 60's replacement was the John Deere 620, in 1956. Engine power was increased again by reducing engine stroke by 0.375 inches, increasing the rpm. The Orchard 620 or O-620 used the new 620 engine and remained in production after the 630 was introduced. It was the only "20" series tractor in production after 1958. John Deere 630 The John Deere 630 followed in 1958, with no mechanical changes. The only changes were more refined decal visuals, updated muffler, air intake, hood design, and dashboard. Production ended in 1960. The 630 was replaced by the four-cylinder John Deere 3010. See also John Deere B John Deere H John Deere G References External links Test 222: John Deere A at the Nebraska Tractor Test Laboratory (NTTL) Test 378: John Deere AR at the NTTL Test 384: John Deere A at the NTTL Test 429: John Deere AR at the NTTL Test 472: John Deere 60 Gas at the NTTL Test 490: John Deere Model 60 (All Fuel) at the NTTL Test 513: John Deere 60 LPG at the NTTL John Deere tractors