I just read Len's post about getting his motorhome back from repair and getting ready to park it for three months or so. He also said he would exercise his generator every month until they left out on their trip. My question is - is it necessary to exercise your generator every month - or at all? Maybe I'm doing something wrong, but I have never done this. The motorhome sat from May 2012 to May 2013 while we were buying/remodeling the new/old home but when we went out this Spring, the generator started right up. Okay, it took a bit of cranking and priming, but it had sat unused for a year. Part of my winterizing procedure is to put Stabil in my gas tank and fill it to the top to prevent condensation. I do run the generator after doing this to insure it has Stabil-ized gas in the carb. Guess I'm just lucky I haven't had any problems.