Timing marks on Kohler 14 hp K321 to set points

I have seen other posts about using timing light to set point. I can barely see an "S" marl in peep hole. Is this the right mark. Can't find a Top Dead Center Mark either no matter how hard I look. Is their one on this engine?

Yes, there is a line under the S that you use. For a video on how to do it, go to yahoo.com and enter "Set Ignition Timing with Taryl" it should be the first one under Video Results. It will be the video with a guy with big teeth, he's a little goofy but informative.