The Fuel Switch

by Colleen
(Algona, Iowa)

I am a new motorcycle operator and not at all mechanically inclined. In the MSF Rider Ed class they taught us to turn the fuel switch off every time we turned the engine off. My friend, whom I trust completely (the one who test drove my new used bike and was my operator as a passenger) says to leave it on because it will keep something from drying out. (I admit I wasn't really paying attention - but I know better now.) Can anyone tell me what it is that will dry out? And what is your opinion on the fuel switch -- always leave it on or not? I know I will never be a motor head but I do want to know how my bike works. Thanks!