This manual provides detailed methods for tuning Mikuni HSR 42 45 carbs to match aftermarket parts that may be fitted to your machine. It includes clear diagrams and text to help you achieve the best performance. Tuning your carburetor after installing aftermarket parts is essential for maintaining optimum performance. Regular maintenance of your carburetor will keep your machine running at its best.
When re-tuning is required, it usually involves small alterations to the idle and/or main system. The following pages supply enough information to make such alterations relatively simple.
