Last ATC 70 question for a while

[adamsj13]

All, I want to thank all of you that helped with all my questions.

I got the bike puring like a kitten. It Idles nice and doesn't hesitate or want to die out. Now, when I put it in gear, it then bogs out and sputters. I looked at the plug and its a little dark but doesn't look bad. Any Ideas? Thanks again for all your help

[tyman]

it idles nice??? you can rev it and it doesn't die???? then u put it in gear and it sputters?????? thats really weird... sorry, not sure whats going on there... like they said.. check chain slack and try putting the rearend in the air and turn the tires in neutral... if they are really tight turning or anything, i'd replace bearings... otherwise good luck..