66/80cc Engine crankshaft is really tight.

Discussion in '2-Stroke Engines' started by Aligring, Apr 28, 2016.

  1. Aligring

    Aligring New Member

    I got a new 66/80cc bicycle engine kit the other day (eBay). I inspected the crack shaft after taking off the barrel housing and the crankshaft is SO tight. It very difficult to move the piston up and down. Is their a way to loosen things up? I gave the engine a test drive and the entire engine was crazy hot. The clutch housing, magneto housing, I mean the hole engine was so hot you couldn't touch anything on it. I'm not very familiar with the insides of these little engines. Any thoughts on the matter would be most appreciated thanks.