John Deere AM138536 Primary Drive Clutch Assembly

The AM138536 is a primary drive clutch assembly designed for John Deere Gator TX Turf and TX 4x2 utility vehicles equipped with the Kawasaki FJ400D engine. This centrifugal CVT clutch engages automatically based on engine speed, transmitting power to the secondary driven clutch (AM138649) via the drive belt (M174026). The assembly replaces earlier part numbers AM137898, AM133495, and AM136510. It is constructed from steel and aluminum components for durability under variable load conditions typical in turf and utility applications. Direct OEM fitment ensures correct belt alignment, shift characteristics, and engagement RPM.