1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 136Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 136

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FUEL DELIVERY SYSTEM
aIdle speed screw IDLE SPEED ADJUSTMENT (MODELS NOT EQUIPPED WITH AN IDLE SPEED SCREW) For models not equipped with an idle speed screw, the carburetor has been calibrated a