The MTD 917-04380 Tiller Worm Gear 61T transfers rotational motion through the tiller's drive mechanism to support power transmission during operation. Its 61-tooth gear engages with the corresponding drive components to help deliver controlled movement within the transmission system. Proper gear engagement supports consistent tiller operation. Replacing a worn or damaged worm gear ca... https://www.wholetoolbox.com/mtd-917-04380-tiller-worm-gear-61t/917-04380.html