[Barry_R]

The red timing mark goes on the cam stub sprocket. The others are self explanatory relative to the cam markings 'cuz they'll only gp one way. And just like on a "normal" engine, the markings are only a place to start out. Use your degree wheel and the adjustability on each cam sprocket to dial in the valve timing for number one - and then for number six on the other side. Really the same as a normal engine times two - plus a lot of effort with extra sprockets, tensioner, idler, and cover assembly....