Are you saying that the markings shown below are missing?
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Yes, I do not find any number on the lower crankcase half, left or right side.
And anywhere on the crankcase too.
On the crankweb they are clear: 1(P1) 2(P2) 1(J1) 1(J2) 2(J3) 2(J4).
Whitout this information to...