2002-2004 Mercury 40HP, 50HP, 60HP, Factory Service Repair Manual, Page 360Get this manual
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Down Pressure 525 880 psi
Up Pressure 1625 psi (30 60 hp) 2800 psi (75 125 hp) minimum
Tilt Relief Pressure 250 400 psi (30 60 hp) 500 700 psi (40 60 hp Bigfoot) 540 990 psi