1965 Evinrude SportFour Heavy Duty 60 HP Outboards Service Repair Manual, P/N 4204, Page 45Get this manual

1965 Evinrude SportFour Heavy Duty 60 HP Outboards Service Repair Manual, P/N 4204, Page 45

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Figure 5-18 Driving Out Wrist Pin Carbon accumulation on walls of the exhaust ports restricts the flow of exhaust gases and has considerable effect on performance of the motorCarefully scrape carbon f