1979 Johnson Outboards 4 HP Models Service Repair Manual P/N JM-7903, Page 58Get this manual

1979 Johnson Outboards 4 HP Models Service Repair Manual P/N JM-7903, Page 58

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performance of the engineBefore reinstalling the pistons, break the glaze using fine cylinder honeUse low drill with rapid up and down movement to obtain good crosshatch pattern for good oil retention

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