Is the camshaft dowel hole/pin supposed to be @ 12 oclock when the crank is @ TDC?
Answer In the first picture the timing is one tooth of on the top sprocket, the dimple in the sprocket should line up exactly with the triangular mark on the front rocker arm shaft support housing, the dowel pin should be as close to straight up as possiblebut its more important for the mark on the gear to be lined up with the mark on the housing, the sprocket can only go on one way to the camshaft. Yes it is possible to move the chain without taking everything off. With the crank pulley at zero #1 tdc remove the top gear bolt and pull the gear off, rotate the cam until the dowel is straight up, collapse the tensioner by pushing it in with a large screwdriver, move the upper gear one tooth until it lines up with the mark on the front support and put the gear back on the cam, it can be done, I have done it many times but it may be little trial and error, the important part is that after the tensioner is released everything lines up, keep in mind that rotating the engine with the cam gea
