I bought an A3 moped from someone that had left it sit outside, water had entered the jug and the piston was completely seized. I had to use an air chisel to pull the jug off.
I bought an engine off of what I believe is a newer model Tomos that was free and working and swapped it onto my A3, the only problem is that the new engine has 2 wires coming from the stator while the original engine had 3. The new engine has a yellow and black wire while the old engine had the same configuration as well as a blue wire. On the old engine the wiring went from yellow to yellow, black to black, and the blue wire went to a brown wire and a brown/black wire.
With the new engine hooked up I have no spark and I can't quite figure out why. Can anyone point me in the right direction on this?