1978 Johnson 4HP outboards Service Repair Manual P/N JM-7803, Page 60Get this manual

1978 Johnson 4HP outboards Service Repair Manual P/N JM-7803, Page 60

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kIt necessary to remove pistons from connecting rod, remove wrist pin retaining rings, using needle-nose pliersSee Figure 5-9 Drive wrist pin through to free piston from connecting rodSee Figure 5-10