Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 92Get this manual
Possible Cause needle and seat (in carburetor) thai is either stuck open or closed (A needle and seat, that is stuck open, will cause flooding condition needle and seat, that is stuck closedwill prevent fuel from entering carburetorImproper carburetor jets, restricted jet or idle mixture screw out of adjustmentImproper carburetor float levelCarburetor loose on reed block housingReed block housing looseor gaskets are defective Corrective Action Refer to "Carburetor Adjustments in this section ft
Refer to "Carburetor Adjustments in this sectionRefer to "Carburetor Adjustments in this section ft
Tighten carburetor nuts securelyUsing pressure oil can, spray 2-cycle oil around reed block housingcrankcase housing matching surfaces and carburetor baseIf engine RPM changes, tighten or replace reed block housing gaskets or carburetor base gaskets, as neededRefer to bleed line routing in Section 4A, ppgs.4A-3839Refer to Section 2A "Electrical and troubleshooting proceduresfor