1978 Evinrude 25/35 HP Service and Repair Manual P/N 5395, Page 84Get this manual

1978 Evinrude 25/35 HP Service and Repair Manual P/N 5395, Page 84

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accumulation in the exhaust ports stricts the flow of exhaust gases and has siderabIe effect performance of the motorCarefully scrape from cylinder heads and exhaust ports with scraper other bIunt ins