The Gator vehicles use small but powerful 341 cc (0. 341 L) four-stroke engines found in lawn mowers, or an optional diesel engine that is also found in some Deere mowers and utility tractors. They use a continuously variable transmission employing a belt and a conical pulley system. Thus, they require no clutch or gear shifts to operate. Many third-party attachments are available for the Gator, including snow plows, sanders, and gun racks. The recommended maximum payload capacity is 600 lb (272 kg). The size of the AMT was designed to easily be loaded into the back of a pickup truck (of the day) to be transported to various remote and/or hard to get to location that conventional means such as towing a trailer would prove dangerous or troublesome. The park brake is tested using the Dry Dock Procedure. The overall design of the first and second all-material transporters (AMTs) were simple, easy to maintain, and easy to fix on site.