It looks like that carb has a check valve on the main jet, and if it has, the jet should NOT have a clear hole through to the body. If the little flap is missing out of the valve it could allow enough air to be pulled back into the idle well, to the point that the transfer ports won't supply enough fuel to let the engine speed up to where it will run on the main jet. A good suggestion made above, was to see if you can get the saw to rev up by using some setting of the choke. That will confirm that the high speed circuit can deliver fuel. I don't think that saw has a primer bulb, but if it has, plug the line at the carb that comes from the primer just to eliminate another source of air leak into the metering chamber.Pulled Welch plug out. Had to drill to get it out. There was nothing laying in there. The holes are clear through to the carb body... My only question right now is do I have the carb screws correct? H and L? Or backwards?
take that echo manuel and throw it in the garbage,,,, the manuel mixture settings are setting it to epa specs which makes it lean,,, throw it in the garbage and richen the carb upcoast was clear.
set the carb to factory settings from echo manual... same issue
removed muffler screen, clean as a whistle... ran without muffler.. same issue
removed the cylinder to look at the piston.. spotless.. nothing on they cylinder, nothing on the piston.. complete skirt in tact..
what in the world could it possibly be?
Yeah I'm waiting for a few items to show up too. Bed mattress, roller blade wheels, and my moped piped to modify for a echo cs510 yeahya. With a glass filled silencer