1991 Johnson/Evinrude EI Outboards 2.3 thru 8 Service Manual, Page 77Get this manual
Carburetor Adjustment2.3, 3.3 Idle Speed Adjustment For accurate results, test run the engine in the water on the customer's boat
ill operating
LJ adjustment
1Start engine and run at half throttle until it reaches temperature before making adjustmentInspect engine for gasoline leaksr, 2Run engine at slow speed and adjust the slow speed screw until the engine runs in the range of 1100-1300 RPMAllow 15 seconds for the engine to respond to adjustmentThrottle Jet Needle Adjustment
f21 The carburetor is equipped with throttle valve that uses a
tapered jet needle to vary the fuel flow as the carburetor is openedNormally the clip is in the third grooveRelocating the clip to first or second groove of the jet needle will lean the mixture