I need info. about my lawnmower. Someone please help me find which SPARK PLUG NUMBER I need?

If you have the Model/Serial number or better yet, the OLD spark plug, take it and go to an auto parts store. they can search their catalogues and/or look on their computer to see what the comparable current spark plug is. I use to work at an auto parts store and this was a common transaction during lawn mowing months. If the person you speak too says you can't do it, ask for the manager or GO TO A DIFFERENT STORE. hope this helps.