Kohler Pro 25 HP Twin white smoke

I have a couple of questions regarding my Kohler engine. Upon startup, it emits white smoke out of the muffler. It is brief, but it does it every time regardless of the engine being warm or cold. Does this mean it's running too rich? I looked at the carb, and there do not appear to be any adjustment screws whatsoever. Also, the engine will surge at high RPMs, but his usually only happens when there is no load on the engine. When driving or mowing, it doesn't do it. What could that be? Thanks.

Kohler Pro 25 HP Twin white smoke