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Setting low speed screw

Post in 'The Gear' started by oilstinks, Sep 10, 2010.

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  1. oilstinks

    oilstinks Feeling the Heat

    Joined:
    Jan 25, 2008
    Messages:
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    Loc:
    western NC
    How do i properly set low speed screw? On a saw a ms250 in particular.

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  2. HittinSteel

    HittinSteel Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    1,587
    Loc:
    Northeastern Ohio
    The standard setting should be printed right beside the screw adjustment holes on the saw

    The manual states:

    Turn the L screw clockwise until it is fully seated (gently). Then turn 1 full turn counterclockwise from the seated position.

    The H screw is 3/4 turn counterclockwise from fully seated

    Turn the LA screw clockwise until the chain begins to spin then back off 1/4 turn

    If it wont' accelerate properly, turn the L another 1/8 to 1/4 turn counterclockwise.
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