Size of plug gearcase leg 150 2 stroke?

[mcgyver]

Hi, whats the size of the drain plug on the leg of a Yamaha 150? ie what fitting do i need to pump gearcase lube in through the drain plug. thanks

 

[robert graham]

Re: Size of plug gearcase leg 150 2 stroke?

The fitting comes with the pump and it specifies on the package if it's for Mercury, Johnson, Yamaha, etc. lower unit plug threads. I'm guessing the plug threads on my Yamaha are 8mm or 10mm, not sure. Walmart carries the pump/fittings for about $10. Good Luck!