Subaru 600 Pick Up counterweight probemas

Hello friends. This is the first time I write in the forum, but I am always accessing him to learn a little more.
My jewel is a 600 pick -up subaru, we take out the engine to rectify the cylinder head, since it was crooked, we also took the opportunity to change rings and metals. The fact is that next to the crankshaft, a counterweight works, which is chisronized to the work of the crankshaft through a piñon.
When we assemble the engine, we followed old reference brands that both pine nuts had. Yesterday I put the engine but I remain with a vivraction that moves the entire body especially when the engine is slowed down. I think it is because this counterweight is not in its job
If we look at it, I am working against the piston movement, when the pistons are arriva, this counterweight is down.
If anyone could help me and tell me what is the position you should have, pienzo that can be opposed to the one you have now, that is, when the piston is arriva, the counterweight has to have all its arriva weight.
I hope someone can meet this request.
Besides, if someone has any manual of this model, I would appreciate it very much.
From my gratitude for the help.
Greetings, Rodrigo.