Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 295Get this manual

POWER TRIM
Shock Function ,=, U
Up Pressure 1625 psi 2800 psi (75- 125, hpj

Reservoir Oil Return Oil

Oil Under Pressure

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives