Have a 2004 150 carb yama.
I keep getting a lot of excess oil under the cowling after running for 2 hrs. or so.
I know its yama lube, but cannot seem to see where its comming from, When I remove the cowling It can be seen puddled up in the nicks and crannes under the motor.
I took the silencer off and there was a lot of oil which I drained from inside the silencer. The drain line on the silencer was open and not stoped up.
Could I possibly have a bad check vale on one of the carbs ?
Any ideas,
Bill Granade![]()