CS 18 and CS 24 concrete saws eliminate the need for daily greasing of bearings. The bladeshaft system uses no set screws and provides easy servicing of sheaves and inner blade collars, says Target. The spring-assist screw feed raise-and-lower system allows the operator to raise and lower the blade quickly and easily with more control. Overall vibration is reduced, and the handlebars adjust to operator height. A hydrostatic differential-drive system eliminates drive gears from rear wheels, which reduces rear-wheel wear and eliminates slipping.