Yamaha 25BMH 30HMH Factory Service Manual, Page 52Get this manual
GEN INFO TILLER HANDLE
FEATURES AND BENEFITS
For the throttle grip on the steering handle of the 25B and 30H, 100 degrees of opening angle covers all ranges from full-close to wide-open positionsAlso, new steering handle parts were developed to assume the long useInner diameter of the steering handle engagement area, and both inner and outer diameters of steering bracket are increasedPlease note that if the new steering handle is installed on the previous models, Steering handle 2, Steering bracket, Collar, and Washer must be replaced