John Deere 950 Tractor Horsepower, Price, Specs, Review, Serial Numbers, Weight, Attachements, History & Pictures The John Deere 950 tractor enjoyed a very long production run of 11 years between 1978 to 1989. John Deere 950 is a compact tractor powered by Yanmar 3T90-J diesel 3-cylinder liquid-cooled 105 ci [1.7 L] engine, which produces 31 hp power at rated rpm … [Read more...] about John Deere 950 Tractor Horsepower, Price, Specs, Review & Attachments