Well it really just depends on use. Ive had alot of trouble with the clutches on both of my Yamahas. I think there a weak spot on the cart. Im not sure how much you want to spend here, but if you want a good aftermarket clutch that requires no grease and matinence, then you may wanna check this clutch out. Its makes the cart run alot smoother on take off, it dosent make any clunk noises like the G16 clutches do and will give you ability to make your golf cart into a key start. I have one on both of my carts and have NEVER had any trouble with it. Ive never even touched it after installing them...
http://cgi.ebay.com/YAMAHA-G2-UP-DRI...QQcmdZViewItem