I have a mower with a Kohler KT735 engine. It has 175 hours on it. It has been trouble free until this week when it started blowing blue smoke and dying. I found that the oil level was way over full so I drained the oil, changed the filter and refilled to the full mark. I had a heck of a time getting It to run but finally did. It would only run with the choke set on. With the choke off it died immediately. After running and mowing about 15 minutes the oil level was about a pint over full. Time to repower with a new engine?