Ask me how I know? My first street legal bike. Bought it at 15 yrs old. 2 carbs, 2 headers, 1 nearly 4" piston. And no electric start. Compression release lever worked, but it would never start of you used the compression release lever. Kick start only. I had some pretty good laughs when my buddies would attempt to start it. I learned, and it was a trick.