v4sL 11c Seems to be the model # and it also is stamped 1970 401 inside the motor I need to know what year this is and what to do for regular Mantince this is my first boat ive had it for 2 years and it has sitten under a tarp ive done nothing with it motor seems to be lubed well and has new spark plugs. Also can anyone tell me about the electirc system will it charge the battery while it runs ?