Caution! The position of limit screw 1 is set at the factory and this setting cannot be changed. If the screw has been turned, the adjustment must be made again.
Turn the limit screw 1 until a gap forms between the stepped disk and the screw.
Carefully turn the stop screw until it touches the stepped disc. From this position, turn the screw another 1/4 turn.
Adjust idle speed, check CO content in exhaust gases.
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