1985 150 mercury tilt cylinder. Please help.

James R

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Feb 1, 2007
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I have the rebuilt power head all ready to go back on but I need to fix the leaking tilt cylinder before I can move forward. I have made the spanner wrench, removed the end cap and pulled the shaft and piston. No problem here. The drawing shows this clearly. However there is a second piston sitting in the cylinder that appears to be stuck. I see from the drawing that this has O rings that need to be replaced. The piston in question has an allen screw of some kind in the center of it. If I unscrew this will that facilitate the removal of the piston?
This project is at a halt until this is resolved.
Any help would be appreciated
 
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