Another Tid-bit of useful info
Anyone wanting to do this alone (like me) :D will want to go ahead and buy the polaris special tool for the cam chain tensioner. The method described in this thread (leaving the cam chain tensioner in) is pretty much impossible if you don't have a buddy available to help you out....trust me. Sure a screwdriver will work to remove the tension from the cam chain, but it's in such a tight place and it requires that a good amount of pressure be used to remove the cam chain tension that it's just easier to remove the tensioner assembly and use the special tool to reset it before re-inserting it into the head for re-installation. Removal of the tensioner also makes it easier to align the timing marks properly upon re-assembly since you will have slack on the chain to work with. The method described here will require a you to strain your fingertips turning a small screwdriver in a tight area to remove enough tension from the chain to allow removal from the cams. Since this adjustment is suppossed to be checked and if need, completed every 35 hours, IMO I think it's worth it to buy the tool for $17.95. The polaris part number is pa-45958 and can be found at this link: http://polaris.spx.com/Detail.aspx?id=202&cat=1.
Also, I don't remember if it was stated or not in the thread but upon re-assembly, the intake timing marks should be at 9 and 12 o'clock and the exhaust cam will be slightly advanced by one tooth once the tensioner is reinstalled. Just trying to save a few people a little bit of headache that i experienced. Nothing is worse than having to stop in the middle of a process and source additional manpower when it could be done a bit easier. Work smarter, not harder i always say :)