Hi, This is my first boat. The previous owner told me that the boat and motor were 1961 model years. Reading through this forum (which is a great one!) I found that 1961 was the first year with electric start. Mine has this but when I went to the marina to purchase a shop manual they said it had to have a "13" in the model number. Mine is V4S12S. Now I'm not sure if it is a 1961. Any help would be appreciated.