1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 44Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 44

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Bleeding Air From The Oil Injection System IMPORTANT: If air exists in either the oil pump inlet hose or oil pump outlet hose, the air MUST BE bled from the hose(s) or engine damage may occurBLEEDING