Scotts Cordless Lawn Mower. The mj500m comes with a handy rear collection bag to help keep your yard nice and tidy. Pricing for larger projects, like replacing a blown engine on a riding mower or replacing the transmission on a … The sun joe mj500m reel mower with grass catcher handles tough turf with ease and provides a quiet solution for any lawn. American lawn mower is the creator of earthwise, great states, yardwise, and zombi power tools. For example, the lawn mower guy charges $50 for carburetor cleaning and $40 for carburetor replacement (plus the cost of parts).