Big Tractor Power is in the field with a 1978 John Deere 7700 Turbo Combine harvesting soybeans. This video shares specifications and information on the 145 hp 169 bu. John Deere 7700 Turbo combine. Enjoy hearing and seeing this top of the line 1970’s John Deere combine harvest soybeans with a 180 hp John Deere 4840 tractor and Ez-Trail grain cart.
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