Again thanks Ray for the ipl and service manual.
I still can't get my echo to idle. It starts right up on the second pull and as long as I am actively reving the engine it runs but let go and it dies. I can rev it for a minute+ so it is warm but just dies. If I just hold the throttle down say at 3/4 open it also dies. I have to be constantly pulling the finger throttle lever on an off to keep it going. Here are the things I have done.
Rebuilt the carb with all new parts except the needle valve sent me in the kit was too long so had to reuse the old one. The needle does seem to move fine up and down with no sticking. I didn't soak the carb but sprayed all with carb cleaner and then air. I did not remove the welch plug and clean the idle port so wondering if that is a problem. I did not take off those little red things on the hi low needles and did not remove the needles.
Replaced fuel lines, purge pump and line, fuel filter, air filter.
Took off the reed valve/insulator and cleaned it and it seems to work. It appears differently then the one in the service manual. As an aside. when I first took off my carb there was a small piece of debris keeping the reed valve open and I removed that and really thought that was the problem but that didn't pan out.
Could not get my fuel check valve replaced. I have the type B. I took off the starter housing and found the hose but pulled and cleaned and pulled and the hose would not come out of the assembly. I can see deep down into the crevice and see the end with the check valve but it seems too big to get through the opening. When I was reving the engine I did turn the saw on its side and opened the fuel tank to let any excess pressure building out and it didn't seem to help the saw to keep running.
So my suspicion is that it is not getting enough gas from either the faulty needle valve, junk in my idle port or around the hi low needles. Less likely the fuel check valve causing problems
Before I tear apart things again any thoughts?