Yes sorry I meant the crankcase cover, thanks for the info. Ready now to closer her up and turn her over. Last time I tried this was before I took the engine apart and it did not want to turn over. I have a new spark plug, filters, oil. Anything else to help the engine out? I will study the Operating Manual about some of the adjustments and let you know how I get on. I was going to make sure she runs smoothly before I re-mount the engine on the mower chassis. Is this OK?