Minor problem...help?

With the engine OFF, and the front sprocket exposed, watch the front sprocket as you turn the wheel. If the chain jumps every 1 turn of the sprocket your problem is with the sprocket. If it jumps any other interval it's the chain. If you need to replace the chain the sprockets are cheap insurance to make sure the new chain lasts.
 
Nothing up front to bind on the drive sprocket. If you want to be meticulous, take a razor blade, and press it along the side of the o-rings on your chain one at a time, inside, outside. Do not cut the o-rings, just separate the rubber enough to spray chain lube in there. This will deep-soak the pin and allow a deeper penetration of the lubricant. It'll take you a while but that, in itself, will free premature bind or rust from lack of cleaning. If it's the original chain, look for blue link on outside, then replace at earliest convenience.

In the meantime, this can buy you a little piece of mind and time..... :oldcool:
 
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