An adjustment stop screw or bolt is provided for adjusting the full forward speed position of at least one steering lever on a skid steer loader. The stop screw will engage a member movable with the steering lever below the operator's platform. The stop screw can be adjusted through an opening in operator's platform to change the stopped forward speed position of the lever, and thus the full forward speed position of the linkage that controls the motor operated by that lever. This in turn adjusts the speed of the drive motor in a full forward position of the lever. The adjustment is made to match the output speeds of the drive motors on both sides of the skid steer vehicle.