Look under the sheet metal cover, on the handle, for the numbers. Super Pro Recycler II was most often equipped with a Briggs engine, but I have seen a couple with Susuki. That Briggs engine used a Champion plug RJ19LM.
So the mower is a Super Pro Recycler II ,the plug currently is Champ 861ECO that I am looking to replace.Wow,pricey plug!! Guess I will look at a cross reference.The blades are a pretty cool looking design,gonna sharpen them.
Couldnt find any model or serial # tags.I will attach a few pics of the mower.The motor has "GTS 2 550" on pull cord cover.
I changed the oil through the oil change plug which was simple to do.Maybe no pic,it says upload is too large