Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 20Get this manual
Following Complete Submersion SALT WATER SUBMERSION (SPECIAL INSTRUCTIONS) Due to the corrosive effect of salt water on internal engine
14If engine fail to start, determine cause (fue l, lectrical or mechanical)Engine should be run within hours after recovery of outboard from water, or serious internal damage may occurIf unable to slart engine in this period, disassemble engine and clean all partsApply oil as soon as possible
components, complete disassembly is necessary before
any attempt is made to start the engine
Out-ot-Season Engine Storage
SUBMERGED WHILE RUNNING (SPECIAL INSTRUCTIONS)