Abstract: A track laying tractor has a front mounted engine and rear mounted pair of transmissions and right-angle drive units, each transmission and driveunit being provided for one of the two tracks. A single engine output shaft provides input for the two transmissions, through gearbelts, and output speed reducing sprockets and chains are employed between the transmissions and gear boxes for the necessary speed reduction. There are two self-centering track control handles, the left-hand handle controlling the left-hand track, and the right-hand handle controlling the right-hand track.