2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 447Get this manual
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POWER TRIM
Specifications
Hydraulic Pressure Trim Down Trim Up Trim Sensor Resistance 20 5C (68 5F) Full Down Full Up 6.7-8.7 mPa (970-1260 psi) 12.2-14.2 mPa (1770-2060 psi) 9-11 247.6-38