Mighty_mix

Hello Moses, I have recently purchased an XR650r and have stumbled upon your website when looking for information on valve clearance adjustments. I just want to say I really admire your dedication and passion; this website is a treasure trove of mechanical knowledge. I have a conceptual question regarding valve clearance adjustments, specifically on a single cylinder dirt bike. Why does the piston have to be set at TDC on the compression stroke? will the valve adjustment be different if set at TDC of the power stroke, or any position within the power/compression bands where the valves are completely closed? Ahmed

Hello Moses, Often when cleaning away old gaskets from an engine case, the aluminum would get scratched, would you recommend using Gasgacinch along with the paper gasket when putting together dirt bike engine cases during a rebuild? Ahmed