The SM 1417 is a heavy-duty Self Starter Rocker Assembly (Brush Holder) designed for Bosch-style (BO.TYPE) starter motors. This assembly is a critical replacement part for Deutz 223 Series engines, which are the industry standard for powering industrial Boom Lifts (such as JLG, Genie, and Skyjack). Engineered for 4-brush systems, it provides the high-current stability required for the frequent start-stop cycles common in aerial work platform operations.