I am looking for a manual for a 1983 Craftsman Rider Lawn Mower, Model 917.253741, Serial Number 0983501710. I know its old but we just bought an engine for it and it runs like a charm, but I need the manual for a parts list... HELP

http://www3.sears.com/
Gt 18hp twin 6 speed garden tractor?
Enter your model number, it lists pretty much the whole tractor.

Where do I find model number for craftsman 18 hp riding mower?