1971 Evinrude StarFlite 100 HP Outboards Service Repair Manual, PN 4753, Page 16Get this manual
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2-9 TROUBLE CHECK CHART (CONT) TROUBLE 4ENGINE MISFIRES (Assuming Fuel System and Carburetor OK) (Cont) POSSIBLE CAUSE Incorrect spark plugs BDISTRIBUTORSee Section Incorrectly adjusted breaker points