I am posting at the Echo forum because my current issue involves an ES210 blower vac. Carb is a Zama C1U-K78. But I have had this issue with other equipment brands and carbs as well from time to time. This ES210 is frequently harder to start because I don't use it very often. Noticed that the primer bulb (no cracks) is not filling when being pushed & released. Took it off the unit and placed two fuel test lines on it with the open end submerged in a container of 50:1. Suddenly, with pumping action the bulb filled as it should and bubbles squirted out the exit line. Thus, one would presume that the bulb & check valve operation was working. Then put it back on the ES-210 and ... nothing. Anyone one else experienced this mysterious behavior?
PS - I can get it to start & run great with a shot of carb cleaner in the spark plug hole. Therefore , in run mode the carb is pulling gas as it should.
PS - I can get it to start & run great with a shot of carb cleaner in the spark plug hole. Therefore , in run mode the carb is pulling gas as it should.