how would i go about chaning the lower unit oil in my 1965 super sea-horse 75hp engine i just got the motor off a old husband and wife couple. but they havent used it in 12 years and am starting to clean the boat and the motor up and i am wondering where to change the oil and what should i do to prep the engine. The couple said that it ran fine when they parked the boat and motor. It was under a tarp for all that time. But it was out side also.
