I purchased the Honda Service Manual which has every proceedure you need to follow. I think the Manual cost $65.00 or so, but this information inside of it is as good as GOLD. Remember to buy the HONDA Manual. The other Manuals are decent, but do not go into detail like the Honda Manual does.Has anyone adjusted there valves on your quad's? I have a 2008 Honda foreman TRX 500 FPE. I'm pretty good with doing most of the work on my quad but this is something Iv'e never tried. If anyone has any input it would be greatly appreciated!