MiltonV Posted March 8, 2020 Report Share Posted March 8, 2020 Hello, my neighbor have a 620 I was helping him to adjust the idle but it was impossible, the motor shakes and the more I reduce the rpm the more it shakes Can't stabilize it at 800rpm because it holds for seconds and then it just shut off, so 1200 rpm seems to hold ok but no less than that. I sprayed some gasoline around the carb to see if there were some air leaks but it was negative for that. Also removed #4 spark plug and the motor kept running exactly as it was before, so no appreciable change, did the same with the other spark plugs with same result, no visible change in motor. Any ideas? Suggestions? Quote Link to comment
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