why not take engine # to small engine repair shop that handles Briggs - they s/b able to lookup oil drain plug..?

I did but they could not tell me the size, they did not have one in stock. I want to order a drain plug with a valve so that I can attach a hose when changing the oil. I now have to remove the mowing deck to change oil. I could remove my drain plug and determine the size but I wanted to have the valve drain plug when I needed to change oil. I thought that someone would know the size.

go here: http://www.repairclinic.com/Shop-For-Parts/a22b303d780468/Model-401417012899-Briggs-Stratton-Small-Engine-Parts scroll down. You'll see an oil plug for engine = 3/8 size..

Thanks, I will order one today.