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437 Posts
Have a alpha 1 merc 350 i/o that wont trim up going any faster than say 10mph...trims fine when going at lower speeds .It will go down when running but not up which is what you want . Been told its prolly the pump worn out as the prop is pushing it foward when at speed and it takes a lot of a$$ to push it back . Anyone else had this problem? Thanks , Bob