1972 Evinrude StarFlire 125 HP Outboards Service Manual, PN 4822, Page 39Get this manual
Pull spark plug leads off before proceeding with step 2-bIt is possible to fire any fuel left in cylinders after step 2-a
If neon lite doesn't flicker, connectatestsensor into the pulse pack plug as illustratedWith key switch ON, activate sensor by passing feeler gauge or smooth metal object back and forth across its faceNeon lite should flickerIf neon lite doesn't flicker, replace pulse packIf neon lite does flicker, test sensor circuit