The MTD 911-04078 Tiller Tine Shaft supports the rotating tines that loosen and cultivate soil during tiller operation. It holds the tines in position and transfers rotational movement from the drive system, allowing the tines to break up compacted ground for garden preparation. A properly functioning shaft helps maintain stable tine rotation and consistent tilling performance. Replac... https://www.wholetoolbox.com/mtd-911-04078-tiller-tine-shaft/911-04078.html