I ran my '80 8122 for the first time since buying it last autumn. (It needed repairs and maintenance.) It is my first and only running Kohler powered tractor. It has a Kohler K301 with a stock mechanical fuel pump. I run non-ethanol premium with Sea Foam. Should I run the carb dry to stop it, like I do on all my gravity fed machines, or should I just turn off the key and then turn off the gas as a precaution?