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Message: <blockquote data-quote="Rednaxs60" data-source="post: 223980" data-attributes="member: 4617">The idle speed screw is the one that you adjust the idle with - at the rear of the air chamber in the middle, not the one in the picture.On page 10-25 of the supplement in the notes for calibrating the TPS it mentions not to loosen off the stop screw locknut.  You bring the throttle linkage to the stop screw and when the gap between the throttle linkage and the stop screw is 2.9 mm you check the TPS calibration.  When you have the stop screw up against the throttle linkage as you have, you can get an over-fueling situation, fuel smell when engine is operating.  The stop screw is set at the factory, and should not be adjusted. Your TPS looks to be original.  What I would do is check the TPS calibration by backing off on the stop screw, insert a 2.9 mm feeler gauge without moving the throttle linkage.  Check the calibration, and if not in spec - 0.475 to 0.495 VDC, unscrew the stop screw a few more turns, bring the throttle linkage to the stop screw until you can insert the 2.9 mm feeler gauge between the two, recheck the calibration.  Do this until you get the TPS calibration correct.  Set the stop screw and do not move it again. These are fun machines.</blockquote>