- Check the right rear wheel for any foreign objects (like sticks, stones, or clippings) and carefully remove them. Then try starting the mower again.
- The grass may be too thick or too tall for the mower to handle smoothly. Move the mower to a spot with shorter, less dense grass and restart.
- If the error continues, mow your lawn down to its usual maintenance height first—this helps reduce strain on the mower—then try again.