150 oil pump replacement

[rowinjac]

I have a 1985 150 yamaha outboard. It is leaking 2-stroke oil and smoke heavily when started. I have been told the seal is leaking into the crankcase.
Do I need to replace the oil pump or is there a replacement seal? if I need to replace the pump are there any secrets?

[boats.net]

You would need to replace oil pump, need to look at pump and see what make a pump it has,
If has Keihin pump order 6G5-W1320-00-00 pump kit
If has a Mekuni pump order 6R3-13200-09-00 Oil pump