1989 Johnson Evinrude "CE" 9.9 thru 30 Service Manual, P/N 507754, Page 94Get this manual
'16l5If the adjustment is too rich, notice your reference mark and turn the needle 112 revolution clockwiseWaiting 15 seconds after each adjustment, repeat this procedure until you reach the highest consistent RPM6To test your adjustment, run engine near full throttle for three minutesReturn the engine to idle in gearThe engine should maintain smooth idle RPM If your test results vary, repeat Steps thru 57Use RTV Sealer, OMC PIN 263753, to seal the end of the adapter sleeve Important If the engine does not respond properly to these adjustments, check the following: