2001 Mercury Mariner 50-60HP Factory Service Manual, Page 326Get this manual
POWER TRIM
Down Circuit
Reservoir Oil Filtered Feed Oil Return Oil
Oil Under Pressure
Impact Relief Pressure #22 880 1110 psi (30 60 hp) 1220 1420 psi (75 125 hp) Up Pressure 1625 psi (30 60 hp) 2800 psi (75 125 hp) minimum l