Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 182Get this manual
Power Trim System Specifications
Test Readings
Trim Up 1300 PSI (91kglcm'l Maximum Pressure Trim "DOWN" 500 PSI (35kgcm')
Special Tools
Tool Description Part No91-11 230
Alignment Tool Trim Rod Removal Tool Trim Rod Gu ide Removal Tool Power Trim Test Gauge Kit Adaptor Fitting Spanner Wrench Multi-Meter OVA Tester