Perch - Left - Hot Start - Yamaha High-quality, durable cast aluminum construction with a polished finish for true OEM fit and look, Motion Pro uses quality aluminum adjusters, not brass, True OEM-style shoulder pivot bolts will not pinch lever when tightened, Locknut with washer holds pivot bolt in place and prevents loosening, Remove hot start lever, including hot start mount plate, from perch when used with applications that do not require a hot start lever.