Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 114Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 114

31Remove impulse hoses for fuel pumps from crankcase cover32Remove bolts from each fuel pump and remove fuel pumps 34Remove output hose of enrichment valve from Tfitting
a Output Hose Filling+

35Remove bolts from enrichment valve bracket and remove bracket and valve assemblyNOTE: Bolts are loctitedUse heat to loosen toctite if necessary