My grandpa has an old motor that he said i could have. Its a 70's model Sears motor and i think it 6hp. He said that it has never been used. He got it brand new and started it up once to see how it ran but never used it. So its been sitting in his garage for 30 some years. What would be the first thing i would need to do to get it working, or after sitting that long would it be worth it? Thanks for any help.