I rolled over my diesel BCS 853 last Saturday while pulling a subsoiler implement. We were pulling up landscape cloth buried under 20 years of mulch and I lost track how close to a chip mound from a ground stump the right wheel was. It crawled up that mound and promptly flipped over. I let go of the safety handle and fortunately the engine fuel supply cut off the engine. No oil loss and no other problems. Am writing this up so my fellow 2-wheel operators have this knowledge.