Building 660 Clone

[Baldwin]

I just started building a 660 clone last night. My question to everyone is how easy should it be to spin the crankshaft once you have bolted both sides of the crank case together? I have watched some build videos and it seems that the crankshaft spins a lot easier in the videos. If there is a problem with my build so far, it's not visually obvious. Anyone have knowledge about what to look out for when installing a crankshaft?

 

[J D]

Crank might need centering... or just a tap each way to relieve any pressure on the bearings. Don't hit the crank with anything too hard

 

[daniel cosgrove]

tight seals will do this as well , just need a little time and they wear in , agree with the crank not being center place a piece of hard wood on end of crank and hit with hammer if it gets tighter just go the other side

 

[stihltech]

It is best to have the crank spin freely before putting in the seals. Even with the seals, it should spin over just by spinning each end of the crank by hand.