Hello, I just picked up a 102 from a guy with a mower deck. It was at least stored in a garage but has been a few years since it was run. It's in decent shape cosmetically but when I turned it over the piston is stuck so thinking I need to do a rebuild

(which is something I've never done).
I am fairly new to GT's in general (recently acquired a Deere 110) and hope to glean some info from you all on getting it going.
I looked up the gear case serial (385058) and maybe I am doing something wrong but couldn't find what year it was. Any help on identifying what year it is?
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