1999 "EE" Evinrude 5 thru 15 4-Stroke Service Manual, P/N 787022, Page 76Get this manual
Carburetor Mixture AdjustmentAll Models EPA emission regulation prohibits tampering with emission related adjustmentAfter repair or replacement, the idle mixture adjustment procedure must be followedAfter final adjustment, the adjusting screw head must be concealed by filling cavity in cover with RTV silicone rubber adhesive sealant1Start the engine and run it in FORWARD at one-half throttle Allow the engine to reach normal operating temperature
Important
2Tiller ModelsFacing steering handle, turn idle speed adjustment knob counterclockwise to full SLOW speed position3Use CIVIC Idle Adjustment Tool, PI 910245, to adjust idle mixture
4Run the engine at slow speed and adjust the idle mixture needle until the highest consistent RPM is attainedAllow 15 seconds after each adjustment for the engine to respond
5After the final adjustment is completed, turn the idle mixture needle counterclockwise one-eighth turn to prevent lean condition, particularly in NEUTRAL6Reduce engine speed and turn the idle speed adjustment to allow the engine to run at minimum of 800 RPM on 9.915 (305cc) and 850 RPM on thru 9.9 (211 cc) models in FORWARD7Run the engine in gear near full throttle for one minuteQuickly reduce speed to SLOW and shift into NEUTRALThe engine should continue to run smoothly8If the engine stalls or pops, the mixture is too leanTurn the needle counterclockwise 1 16 turnAllow 15 seconds after each adjustment for the engine to respondRepeat Step to verify that the mixture adjustment is correct9If the engine does not respond to adjustments, check it for other problems Make sure gasoline is of good quality