1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 102Get this manual
FUEL SVS
ENGINE WILL NOT START STARTS, WILL NOT IDLE WILL NOT IDLE SLOWLY, SPITS AT IDLE, LEAN ENGINE RICH AT IDLE EXCESSIVE OIL USE STALLS ON ACCELERATION SURGES AT HIGH SPEED RUNS RICH AT HIGH SPEED LOSS OF W.O.T RPM CARBURETOR FUEL SPITBACK