Quadzilla 500es
 

Any members changed a clutch on a 500es (2009 model)

Not that hard. Most clutches whether on atvs or street bikes use the same style friction and steel plates. You can make a card board template to hold the screws so the can be replaced in the correct position. Drain oil or lean the machine over. Here's a couple vids that can help. You'll usually have to adjust clutch free play at the lever when through.