Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 366Get this manual
FILUNG THE OIL INJECTION SYSTEM WITH OIL Use Quicksilver 2- Cycle Outboard Oil which is NMMABIA Certified TCIIIIf Quicksilver 2-Cycle Outboard Oil is not availablesubstitute major 2-cycle outboard manufacturers oil that is NMMABIA Certified TC- II I123Fill the remote oil tank to the fill markRetighten the fill capFill the engine reservoir tank (a) with oilRetighten the
BLEEDING AIR FROM OIL INJECTION PUMP With engine not running, place shop towel below the oil injection pumpLoosen bleed screw (a) tums and allow oil to flow from bleed holeThis procedure allows the pump to fill with oil
fill capLoosen (1 2 turn) the engine reservoir tank fill capRun the engine until air from inside the remote oil hoses has been purged out of the reservoir and oil starts to flow out of the reservoir tank Retighten the fill cap
A CAUTION
Be certain that the fill caps on the oil reservoir tank