The Greenworks 36101486B Lawn Mower Left Motor 40V 20" 5335Z helps deliver reliable blade performance for compatible 40V 20-inch lawn mowers. It works by powering the left cutting blade, supporting efficient cutting performance and consistent mower operation. Made to replace a worn or damaged left motor assembly, it helps restore dependable blade rotation, improve cutting efficiency, ... https://www.wholetoolbox.com/greenworks-36101486b-lawn-mower-left-motor-40v-20-5335z/36101486B.html