I just picked up a '79 Puch Magnum II the other day which has seen it's share of neglect. I cleaned the carb, drained the old fuel, and replaced the fuel line. With a little effort it started up and ran. I notice while it was running that there seemed to be a lot of play in the drive sprocket. I could see it moving in and out about 1/4" while I reved the bike. Is this normal? I also noticed a similar amount of in and out play on the pedals. What do you guy's think?
Also, do most people use the oil injection or bypass it and pre-mix fuel?