The Kubota STW40 is a compact utility tractor produced from 2015 onward. It features a Kubota D1803 1.8L 3-cylinder liquid-cooled diesel engine delivering 36.6 hp net and 38.5 hp gross. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds across 3 ranges. It includes four-wheel drive, mechanical rear differential lock, power steering, and wet disc brakes. The STW40 offers a two-post folding ROPS with an optional cab with air-conditioning. Hydraulics provide 2461 psi pressure and 7.9 gpm pump flow. The tractor hitch is category I with position control. PTO options include independent rear and mid PTOs with multiple speed settings. Dimensions include a 63.4 inch wheelbase, 115.8 inch length, and weights ranging from 2436 to 2756 lbs depending on configuration. Standard tires are 6.00-12 front and 9.5-22 rear, with lawn/turf tire options available. Attachments include a 152 cm mid-mount mower deck and front-end loader with a 1213 lb lift capacity. Electrical system features a 12 volt battery and 60 amp cab charging alternator.