1997 "EU" Johnson Evinrude 5 thru 15 Four Stroke Service Manual, P/N 507262, Page 80Get this manual
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5Install hose on air hornAttach hose to carburetor nipple and secure with tie strap
6Install manual starter as described in Section 7
7If the idle mixture needle adjustment has been disturbed, refer to Carburetor Mixture Adjustment
Carburetor Mixture AdjustmentAll Models
1Start the engine and run it in FORWARD at one-half throttleAllow the engine to reach normal operating temperature
2Tiller modelsFacing steering handle, turn idle speed adjustment knob counterclockwise to full SLOW speed position
rn 3Use OMC Idle Adjustment Tool, PIN 910245, to adjust idle mixturern Wneedle4Runthe highest consistent RPMandattained.the idle []] the engine at slow speed adjust mixture until is Allow
15 seconds after each adjustment for the engine to respond5After 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 116 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 problemsMake sure gasoline is of good quality