The lawn mower is traditionally read as keeping order and cutting back what has grown out of hand. A mower that will not start often reflects chores or duties that feel stalled.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.