I'm rebuilding a moped for the first time, and being what I think is extremely diligent about the rebuild. I thought I took pictures of every single part as i deconstructed the bike. However, now that i'm in the rebuild stage - i've got a serious head-scratcher in the engine. Pictures attached. Here's my problem:
1. I'm re-installing the axle that the pedals attach to. It's got several parts that live inside the engine, including some washers, spacers, and a sprocket - that has a chain that connects to the other sprocket inside the engine. I assumed that sprocket would be "fixed" so that when you turn the axle, the sprocket will turn. But as i'm assembling it, in the way i think is correct - the sprocket spins freely, not "locking in" with the axle.
2. Additionally, there is a "notch" in the axle, that seems immovable. When i go to place the last washers over the axle, up against the sprocket, there is no way to get the washers to "sit" in any level way, because they bump up against the notch.
3. Every Garelli diagram i can find on the pedal axle and sprocket, shows a different style of sprocket and axle. I can't find any examples/pics of what matches my Garelli basic.
Finally, i thought i was meticulous about parts. I'm wondering if i'm missing a part, but none of the pics I took give me the impression I lost a piece or am missing one.
Would LOVE any input, as I'm totally stopped in the re-build until i figure out how to get this particular part sorted. Thanks in advance!