Mercury 60 2 stroke Bigfoot - excess oil

[ibc63]

I have a 2005 Mercury 60hp 2 stroke Bigfoot outboard SN OP341863 ( Belgium ) . This model has the built in oil tank under the cowl. Every time the engine is stopped and parked up pure , excess , 2 stroke oil drips out of all 3 carb’s. What should I be looking for - carburettor float valves , oil pump , or check valves ? Apart from a smokey start up the engine runs fine . Thanks in anticipation.

 

[racerone]

Check valve on the line from the oil pump to the fuel pump / fuel lines ------Item #24 perhaps.

 

[ibc63]

Thanks for your reply . Ok I will try replacing part #24