dduelin
Site Supporter
Very similar. The NC provides a bolt head on the left end of the crankshaft to turn the engine over to align the timing marks so you don't have to move it via the rear wheel. Then it's screw and lock nut adjustment just like an airhead.So just put her in nutural then turn the rear wheel to advice positions to bottom for intake and top for exhaust to check each one it seems. So these are like my old bmwr7505r air heads correct...just screw type adjustment?