Originally Posted by Grreatdog;16362034.......
And, yes, it is pretty difficult to adjust the valves. It is easy enough to check the clearances. Do that just like any other bike. But XT350's are shim and bucket which means you need a shim chart and the correct shims plus a tool to compress the valve spring or you can remove the cams. But it is a good idea to check the valve clearances. If you aren't sure how to do it then it is worth paying for. It has to be done cold though so it is usually an overnight service.
The valves can be adjusted without the special tool (which is no longer available) and without removing the cams. It really isn't that difficult. My valves didn't need adjustment until over 16k miles.