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Retreat mixture adjustment screw for one circle;
Restart, and adjust idle adjustment screw to make the rev reach 2000-2500rpm;
Adjust mixture screw counter-clockwise slowly until the motor rev reaches the maximum (mixture screw shall be
retreat 2 circles at most);
Readjust idle adjustment screw to make motor rev decrease to 1900±100rpm;
Stir throttle to speed for several times to check whether idle rev is steady;
Test outlet and compare it with defined standard.
Cylinder cap
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