Hi there,
even without the ignition parts on the crankshaft you can turn the pistons to top dead center.
The sprockets of the camshafts have an arrow (line) that must be horizontal aligned (parallel to the sealing surface).
Always remind that the crankshaft turns “backwards”, means counterclockwise when looking on the ignition side.
Cheers, Michael
#1 and #4 in the drawing points to the arrow marks
