echo carb tuning

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  1. S

    STIHL 066 chain running out of control while idling

    Hello all I have a STIHL 066 that just got out of the shop and mechanic said it was “tuned” right. The saw has aftermarket exhaust on it. Throttle response is good and engine seems to be running good. while idling, the chain keeps turning and sometimes turns at high speed. Any idea on what...
    • Stihl dude
    • Thread
    • carb clutch springs echo carb tuning stihl stihl 066
    • Replies: 7
    • Forum: Chainsaw
  2. L

    Echo CS 355T how to tune

    Echo CS355T just purchased and have run 1.5 tank of fuel. After saw gets hot and sits it is very hard to start. From reading on here appears they are sent with the carb tuned very lean. Can anyone explain how to richen up the carb. Do I adjust the L or the H setting. Turn the screw clockwise...
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