Merc 125 Saltwater; oil leak

[wiggreb]

I have a 2004 Merc saltwater outboard. When I trim the motor all the way or almost all the way up, outboard oil leaks out from the front where the cowling meets the motor. When I remove the cowling, I cant find any obvious place where the oil is coming from. By the way, the motor runs fine. Any suggestions?

 

[WillyBWright]

Re: Merc 125 Saltwater; oil leak

Not at all unusual. Either coming out the fill or more likely the vent. Keep the tank half-full and only tilt as far as needed. The vent has a little check valve in it, make sure that's there. The black button cover just pops off. But the valve isn't 100% effective in keeping the oil in, it mostly slows the flow to a creep. A half-full oil tank will still last many tankfuls of gas.

 

[JUSTINTIME]

Re: Merc 125 Saltwater; oil leak

yep those caps are notorious from leaking