Chainsaw Repair

I got wrapped up in yard work today but tomorrow it's supposed to rain and I'm spending the day on it if needed. I WILL get back to you all , and thamx so far.

Well , today I ran the 455 with lo speed set at 1.5 turns out and the hi at 3 turns out. Same problem persists. Still runs perfect at full choke , and off choke will rev up to half throttle but past that it bogs down and wants to die. So I'm right back to square one. Any other ideas ? I'm in try anything mode now. There is a bridge close by I can throw it off of.

Now you have to pressure check it to see if you have an air leak somewhere.

I have two of these saws and have not had the problem your talking about.   I have worked on a number of them in my part time job and have never seen an air leak but I did have to replace a carb on one here about 3 weeks ago.   

The way I see it is that you have an air leak or a bad carb.

  You could also take the carb off again and make sure the intake is not allowing air in or a messed up gasket.   

Plugged hi speed oriface in carb body, fuel pump not adjusted right?

The pump lever at the needle valve was the first thing I normally check when rebuilding a carb, this time for whatever reason I Didn't and when I did check it it was way high, to the point it was flooding out. I adjusted it to level but I may need to raise it ever so slightly.I'm going to do that in a bit. I will get back to you on that because I had been thinking of doing it any way . And thanx to all for hanging in there with me. I'll figure it out I always do .