Engine Rebuild for John Deere Tractors shows how to completely rebuild the John Deere engine. The tractor shown as an example is a 1949 Model B with a distributor and a battery ignition, but this information will also pertain to those tractors equipped with a magneto ignition system. This video is filled with valuable information for anyone with the following similar John Deere tractors: A, B, G, 50, 60 and 70 models. DVD format. 85 minutes.