good morning, i'm trying to get a ted williams 7.5 outboard that has a twist grip clutch drive to run and can't get any info on it. i don't know the yr. the model #217/58588-0. i need the plug gap and any other info that anyone has. it's pretty old (72-76) i think? i'd like to get some fish this fall? is there anything else i should do to make it run? i'm not joe outboard but it appears to be in good condition.