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How do I dissolve corrosion between the upper and lower unit on an outboard engine?
How do I dissolve corrosion between upper and lower outboard unit so
to get at the impeller? I took all five nuts off (125 mercury sal****er) the studs holding the lower unit on. I had to use penetrating spray to get the washers off. After whacking the seam dividing the upper and lower with a rubber hammer till blue in the face I etched/scored/scratched the seam to allow penetration spray to work in, nothing. After 24 hours of repeated spraying whacking and more scoring, the two halves still won't come apart. Short of pounding in a chisel (gouging aluminum), and prying them apart, anyone have an idea? |
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