1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 91Get this manual
r:J5l 5If the adjustment is too richnotice your reference mark and turn the needle 1Ja revolution clockwiseWaiting 15 seconds after each adjustment, repeat this procedure until you reach the highest consistent RPM 6Repeat Steps thru for each carburetor7To 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 5If the engine does not respond properly to these adjustments, check the following: Engine temperature Linkage adjustment External recirculation system Sufficient exhaust back pressure
Important
Intake Manifold Servicing, All Models