A-B17018491YP-AI SPRING, TINE, THATCHOne New Aftermarket Replacement Tine Thatching Spring for Snapper, Murray, and Simplicity Lawn Equipment This tine thatching spring is a key component of the dethatcher thatcherizer attachment found on Snapper, Murray, and Simplicity rear engine riders and lawn tractors. The spring holds and tensions the tine fingers that penetrate the turf to break up and lift thatch, helping keep lawns healthy and promoting better water and nutrient absorption.