just got it running for a friend (in a 782)..found cyls had lots of water of course oil did also...Ran great after carb clean and new capacitor until it got up to temp then smoke was very real.I'm leaving out the abusive details but I'm sure rings rusted over the winter,maybe even broke a few.I have no experience with a 17.I've read several comments in the past about this engine and most are not fond of this engine..Would you rebuild or replace? Are parts available to rebuild? If replace then what engine fits the easiest mechanically?? This machine still looks pretty good all hyds worked while running so it's very worth saving....HELP please...