2004 SR Johnson 2-stroke 40, 50HP Service Repair Manual P/N 5005640, Page 194Get this manual

2004 SR Johnson 2-stroke 40, 50HP Service Repair Manual P/N 5005640, Page 194

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POWERHEAD INSPECTION must than 0.004 in(0.1 than the major diameter
IMPORTANT: Ring end gap increases approximately 0.003 in(0.076for each 0.001 in(0 .025increase in cylinder diameterNOT exceed