A Newtown homeowner was using a riding mower Monday when it caught on fire. The homeowner was able to climb off the mower and clear from it without injury.  Sandy Hook and Hook & Ladder responded to the scene.  Once the flames were extinguished, the homeowner hooked a chain to it and, using his truck, pulled the mower away from the area that had been ablaze. Firefighters then did additional overhaul and full wetdown.