I know they don't like 40-1 at all! 50-1 only ... I have a question, I have an old 2100 echo that starts right up and runs great for 1-2 mins. then bogs down and dies...what's up? cleaned the carb out ... do I need a kit?
I changed the little gas tank breather on my other echo today and it runs much better...I'm going to do it yearly. The Home Depot $12 Fuel system replacement kit has the lines,filter,primer bulb,and cap washer all together...it's handy! Got 3 for the "glovebox"