i just recently bought an old troller from a yardsale. the guy told me that it is a 1953, 4 hp.but what kind? it was made at the clinton manufacturing co. in clinton michigan. tha model#is j7, the serial#is 38186,and the type#is 10-13-7-0-4-5. it does run. can anyone help me out? if so i would really appreciate the help. thanx to all and God bless. 