I just purchased a 1963 Performer by Marvin Marine and it has a Johnson Super Seahorse. Themodel number is V4AL-16D and the seriel number is J2439067. I wanted to know the year of this motor and any other info that might be helpfull to me. When i recieved this boat the lower unit was off of it because it has a small crack in it (need to get a new one). The motor has good compression but has not been ran in a bunch of years. What steps should i take before starting this motor?