Sprockets How To Align Sproket/Keep It True

[P2skater1]

My engine chain sprocket isnt perfectly straight. When riding at 10+ mph, if I look down at the sprocket, it looks as if it is wiggling back and forth. Is there a technique to align the rear sprocket?

 

[crassius]

if it is OK in the up/down alignment and just wobbles in/out, then you can take off chain and with finger on the frame, turn wheel till it just touches your finger and mark that spot

now take big crescent wrench and hold tire while pushing sprocket toward tire, then go across from that point and pull other side away from tire - check again and repeat till straight