If you use the generator, learn how to do an oil change and spark plug replacement. The oil change is fairly straight forward - the spark plugs not so much. I change the gen oil, oil filter and air filter every 150 hours. Costs about $20
Spark plugs cost about $15 BUT what a bummer the first time. Takes about 1.5 to figure it out. If you're interested I posted a how to here
http://www.thorforums.com/forums/f8/...00-a-5424.html