Comments : The 74628 chipper is powered by a Tier 2, three-cylinder, liquid-cooled Kubota diesel engine rated 28 hp. The Kubota engine is pack aged with a Kubota radiator mounted to the front of the engine. The chippers include an automatic hydraulic feed which feeds brush and branches with up to 6 in. diameters into the chipper section. The live hydraulic feed system operates in an open loop with continuous flow provided by a Kubota gear pump that is directly driven off the flywheel in the 74628 model. The belt driven pump has a 0.40 cu.in. displacement while the direct driven pump has a 0.494 cu.in, displacement.