Thread: Trying to Remove Lower Unit Drain Screws

I use a big flat head with a hex shank, and a big adjustable wrench on it. This lets you push in on the screwdriver and use leverage to turn the screw.

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Just use the largest screw driver you have, use a hammer and tap the back of screw driver to shock the bolt, then use a wrench to fit screw shank to help turn. Usually breaks easy.