This document provides instructions for performing an exacting valve adjustment on an oilhead BMW motorcycle engine. It emphasizes matching the clearance of intake and exhaust valves in pairs to optimize engine performance. Though the procedure has many steps, it can be done with basic hand tools in a home garage. Performing the adjustment oneself allows for a more precise tuning than what a mechanic can provide due to time constraints. An exact valve adjustment eliminates many common driveability issues and allows the engine to perform at its best.