I had installed the aluminium flywheel some time, last week. Checked timing with a timing light and it was at 20 degrees, with a stock key.
I forgot to install the tins, before. So I had to take the flywheel of again, to be able to install the tins. This time with a grinded down keyway.
^As I knew at what point the flywheel needs to be to create a spark, I had set it at 30 degrees. With the degree wheel.
^After torquing down, I checked, with a timing light, to see if it is set correct. It is.
^Installed the recoil cover, after installing a new on/off switch in it.
Small addition to previous post: I changed the sparkplug wire with this solid core wire with a non resistor boot. My timing light didn't flash, because it didn't pick up the signal with the spark plug out. After I made the spark plug gap larger, the timing light functioned ok. I think there's more power going through the wire with a bigger gap, and that is why it did pick up a signal with a larger gap.