Zach Powell SER
New Member
Hello experts! Brand new to this site. I’m a small engine tech and I’m working on an echo cs 600p.
The owner said while operating it that the rpm’s began to race and it wouldn’t shut off. After getting it to stop he restarted it and it would idle but cut out after the throttle was applied. I took apart the carb and cleaned it. I put it back on and started it. I can get it to run good with the low speed adjustment screw backed out about 3 1/2-4 turns and the high speed at about 3/4 of a turn. With the idle set about 3/4 in. It’ll start and idle and spool up, but when I let off the throttle it dies and won’t return to idle. I’m wondering if it’s the diaphragms since he said he uses ethanol fuel. Any help is greatly appreciated.
The owner said while operating it that the rpm’s began to race and it wouldn’t shut off. After getting it to stop he restarted it and it would idle but cut out after the throttle was applied. I took apart the carb and cleaned it. I put it back on and started it. I can get it to run good with the low speed adjustment screw backed out about 3 1/2-4 turns and the high speed at about 3/4 of a turn. With the idle set about 3/4 in. It’ll start and idle and spool up, but when I let off the throttle it dies and won’t return to idle. I’m wondering if it’s the diaphragms since he said he uses ethanol fuel. Any help is greatly appreciated.