Kubota B40 Price, Reviews, Specs, Engine Oil Capacity, Weight, Serial Numbers, Features & Pictures Kubota B40 Sub Compact Utility Tractor is equipped with a Kubota D850 diesel 3-cylinder liquid-cooled 52.2 ci [0.9 L] engine, which delivers 14 hp [10.4 kW] power at rated rpm 2600. Kubota B40 Sub Compact Utility Tractor featured with a Kubota 0.9L 3-cyl diesel engine, 4x4 … [Read more...] about Kubota B40 Specs, Price, Weight, Review