I have found an add for a used turf tracer HP with a 48" deck and Kawasaki engine. This mower was involved in a motor vehicle accident while being towed on trailer. From the pictures I have seen it is very hard to tell what kind of damage it has suffered, and it's being sold by the insurance company and the representative doesn't know enough about mowers to give me any information on it's running conditions, other than to let me know it has some muffler damage. If I go look at this mower what are some common problems I should look for with Turf Tracers in general, as well as some tell tell signs that it suffered major damage from the accident? What would be a good offer on this mower if the muffler is the only damaged part? What if the engine needs replacement?