1974 Johnson 40 HP Outboard Motors Service Repair manual P/N JM-7407, Page 49Get this manual

1974 Johnson 40 HP Outboard Motors Service Repair manual P/N JM-7407, Page 49

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Check cylinder for size nd wall straightness by using an inside micrometer or dial bore indicatorRefer to Section for specified dimensionsReplace cylinder block, or rebore block for oversize pistons i

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