oren213 , I pulled the left side of my Jetmoto 150s rear end apart yesterday... It looks just like yours..It was fairly easy...pull the left tire/hub off. clean around the seal/axle tube area.. then pull the tube off the axle. On mine the axle tube is the inner "race" for the seal. The seal should come out easily if you pry it out with a long thin screwdriver. Mine also had a o-ring on the inside of the axle tube..mine was leaking and letting a little fluid out of the end of the tube where it butts up against the hub. Always wondered where that came from.

 

It's leaking because its overfilled.

I have a jetmoto 150 with rear reverse built into it.

That is what the problem was with mine.

 

How much fluid do you put in your 150 GNXGuy?