Puck
Standard Bore
While doing what should have been a simple oil change, my first for this bike, I took out all three drain plugs and realized one wasn't a drain plug. Oil flowed fine but the actual plug was back a little more. I replaced it and took the right one out. It was located in line with kickstand. I haven't filled with oil as of yet and have not cranked it over. My question is, what did I remove and did I do harm?