There are also bearings underneath the gear on the rear output shaft that have to be replaced. To get to them, a snap-ring, along with a washer, must be removed. This tiny pin must also come out-be careful not to lose it. Once that is out, the gear can be slid off the shaft, but make sure to note how everything came off the shaft, as the parts need to be reassembled in the correct order. Also, be careful as the needle bearings will fall out when removing the gear, but it is OK since they are being replaced.