It’s time to cross your fingers this spring as you give your mower that first twist of the key or pull of the cord, hoping it will thunder to life instead of sputtering and refusing to start.Unfortunately, for many, their attempts to start their mowers will be met only by the sounds of silence. The source of their uncooperative engines likely began last fall when they incorrectly stored their machine.“Ethanol is what causes the issues and it’s bad,” said Scottie Keel, owner of McMinnville Lawn and Garden located on Highway 55 Bypass. “The biggest problem we see every spring, by far, is caused by gas left sitting through the winter.”Government regulations, Keel said, mean most gasoline contains ethanol so unless the buyer gets gas from a station that advertises itself as 100 percent gasoline, the chances are that there is 10 percent ethanol contained in the fuel.