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Northeast Missouri | A 70 diesel originally came with a one-lever starting system. Pushing the lever forward started the cranking engine. Pulling the lever fully rearward cranked the main engine and decompressed it. Pushing slightly forward cranked the engine on full compression for starting. This system became fickle after a period of time as the linkages worn. Deere had a kit that mounted a pedal on the starter similar to the top mounted starters on older two-cylinder tractors. Most, but not all tractors were converted. You likely have one that was not.
All of these cranking engines shared coolant with the main engine. The exhaust imparted heat through a heat exchanger on the intake system. The system actually worked very well. The problems with the cranking engines came from being in a hurry to start the main engine. An operator would start the cranking engine (still cold), open the throttle to wide open (between 5000 and 6000 RPM, depending on year), then wonder why the cranking engine would act up. In reality, it's amazing they took what they did. If properly warmed up these little engines lasted very well with periodic maintenance.
Edited by Mike Aylward 1/18/2025 09:37
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2 Cyl.Diesel Buffs
