Small Engines (Lawn Mowers, etc.): Changing oil on craftsman eager 1 mower, craftsman eager 1, hp model

Question
I have a 6.75 hp. model 917.377591 self-propelled mower & can't find the manual for it - I would like to change the oil & can't find any drain plug undernieth the deck or above it.  Can you help, Jim

Answer
Jim go to sears web site and click on the parts. There you will find a place to put your Model # in. Then you can print off a sheet for the area you need and you can order a manual for it. The drain plug is on the bottom you will have to look for it. Your engine Mod # is OVM120-200022 or 15 It is a tecumseh engine