Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 313Get this manual
16Retighten "Fill" plugFailure to install spare tilt pin (or hardened bolts and nuts) in hole shown could result in transom bracket failure and possible injury NOTE: If pressure is less than 1300 PSI (91 kgcm2), troubleshoot system per instructions on page 5C-7
8Move outboard "IN" until hole in swivel bracket "ear" aligns with the 3rd tilt hole in transom bracketLock engine in trim range by installing 38 in(9.5 mm) diameter tilt pin or two 38 in(9.5 mm) hardened bolts and nuts thru the transom brackets and swivel bracket in the hole shown
"DOWN" Pressure Check
IMPORTANT: Insure battery is fully charged before performing tests
1Tilt outboard to full "Up" position and engage tilt lock lever2Slowly remove "Fill" plug to bleed pressure from reservoir3Remove circlip securing manual release valve and unscrew release valve from trim assemblyNOTE: small amount of trim fluid may drip from manual release valve holePlace suitable container under trim assembly to collect any leakageNOTE: Assemble test adaptor by using a-ring installation tool to position small a-ring onto adaptor 1st, then install medium a-ring and lastly large a-ringThread brass fitting into test adaptor securely using teflon tape on threads