superjet pump oil?

[ger87410]

Do you need to change the pump oil, similar to a sea-doo? I have the pump off and figured I'd do this if it's required.

If so:
Is it under the cone?

What do you put in it?

Thanx!!!

 

[#ZERO]

The bearings are pressed in place and packed with water resistant Yamaha Grease-A; it should last forever as long as the water stays out.

I use synthetic waterproof green marine grease in the NLGI 2.0 grade when rebuilding the pump assembly.

 

[ger87410]

Thank you #Zero!!
Now I can put everything together and go out riding again.

 

[Crab]

Interestingly enough mine has some oil similar to hypoid gear oil (stinky) and works awsome, very little drag on the bearings. (not filled up but maybe a bit less than 1/4) Im thinking it was an old racer trick back in the day.

 

[Patrick Star]

That old stock Yamaha pump grease smells like death. I took off my cone and it was terrible. I believe I will rebuild my pump since it's stock from '93 and my mid shaft bearing had already went out. Besides, I'll have the impeller off too, if not for that I would just leave it.