2000 Johnson/Evinrude SS 2 thru 8 outboards Service Manual, Page 47Get this manual
Carburetor Adjustment
1Preset idle spark setting by turning knob until spring is fully collapsed (finger tight), then backing out three full turns
2Start engine and run in FORWARD gear at one-half throttle or slightly moreAllow engine to reach normal operating temperature before making low-speed mixture adjustmentsThe boat's movement must be unrestrained, not tied to dock or trailer
W []]Stop the engine to prevent contact with rotating
partsLoosen the two throttle cable nuts and idle speed adjustment screw to allow the ignition plate to contact stop in powerhead
[] 4Start the engine and turn idle speed adjustment screw to allow engine to operate at 800-1000 RPMAdjust the low-speed needle until the highest consistent RPM is attainedAllow 15 seconds after each adjustment for engine to respond 5After final adjustment is completed, turn low-speed needle counterclockwise one-eighth turn to prevent engine from being too lean at slow speeds, particularly in NEUTRAL