I have a ZT mower with Kohler Courage Pro 25 HP. Model SV830-0012 Does anyone know if this engine has automatic Compression release (ACR)? It appears not to have ACR by comparing part Diagrams of Camshaft vs. Command model camshaft know to have ACR. Starter having a time turning the engine over. Fresh Battery with high CCA, Cables seem OK etc. It did turn over and crank at 40°F with M1 5w-30. Yesterday with my normal Rotella T5 10w-30 I have to jump start it. It never been a great starter set up. Any ideas?