Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 126Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 126

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Reed Block Housing Check rubber bleed hosesReplace any hose that is cracked, cut or deterioratingCheck operation of bleed system check valves in reed block housing If valves are working properly, air