Hi Tyler, I checked the items you mentioned no problems there, so I thought taking the carburetor apart again would be the way to go, got it out and started pulling it apart before the brain kicked in. Obviously for the motor to run fast the butterfly valve must be open. I think air getting in from anywhere else would make the mixture to lean and it would not run at all. . There is a system on the other side of the carby that when the choke is engaged it opens the accelerator and is meant to release when you pull the trigger. That was the problem. Just didn't think to pull the trigger while it was revving off from the bench. Put it back together but I think I have created another problem Pull the rope once with full choke, turn the choke off and it starts and revs on the next pull then dies. You can keep it running by pulling the choke in and out but timing has to be good. I could not get it to run by having the choke partially on, it was all or nothing. I am guessing that I have damaged the diaphragm or one of the other gaskets as it only gets enough fuel to run with the choke out.
Decided that the easiest thing to do would be get a new carburetor. The genuine one is available on Amazon from the US for $26.00 or an aftermarket one on Ebay Australia but shipped from China for $29 but it comes with fuel line spark plug filter and gaskets. went for the Chinese one as they are sending it express so I should have it in 2 weeks and I could not find any details on shipping from the US one.
For future reference the Chinese carburetor says it replaces ZAMA CIM-H58 ( A through to D)
I will let you know how it comes out.
If I can get a large enough hammer it will run for awhile just trying to get away from me
