stihl br550 4 mix blower .. what has been done thus far .. new fuel lines with the upgrade of dual pickup lines .. new carb - coil set valves at 4 thou cleaned tank vent new gas cap .. ok here we go .. it starts .. has a rough idle machine shakes alot .. turn up idle it shakes a bit less .. low screw has to be at 3 1/2 out and hi is at 4 any tighter it don't like it .. so if i squeeze it on to wot it goes ok for a little then acts like it's fuel starved .. so trying to tweek at wot makes no diff ? ? ? that's where i am .. looking for some good suggestions please Thanks ! also I have seen to set the valves at intake .010 exh .015-.020 ? ? ? :confused2:
