Bearing grease?

[Dr Ecto]

Thinking about getting the sled put away. Couple of questions about the bearing maintenance every one is recommending. Are the only 2 bearings that need greased/replaced on the left side of sled behind the 2 clutches? (each end of drive belt) Is there not much to worry about on the right hand, chaincase side, of sled. I have read there are 4 more bearings there somewhere. Also can anyone recommend a good grease for these bearings. Thanks again for helping out a new guy.

 

[Riceburner]

Jackshaft & driveshaft bearings, both behind Secondary Clutch.

 

[radianguy]

X2!
Just curious why are you thinking about putting sled away? Winter over?

 

[gitrdun]

As Riceburner says, the jackshaft bearing and the driveshaft(speedo) bearing seem to be of the most concern. The secondary is the sheave that the belt is on, closest to your foot, and the jackshaft bearing is behind that sheave. There are instructions on this site how to remove belt, remove secondary, and service bearing(if it has a removable seal such as NSK). About 6 inches below the secondary shaft, you will see a bolt through what looks like a gear, and behind that is the driveshaft(speedo) bearing.

 

[gitrdun]

As far as greases go, I suspect popular opinion is that suspension grease is for suspensions, and bearing grease is for bearings. There are many good quality greases out there, everyone seems to have there own favorite such as Mobil, Lucas, Bel Ray, Amsoil, and so on. When I was looking into this, the first question that came to mind was, What grease does the original bearing come with? Since the bearing comes from NSK or in Canada, NTN, I doubt Yamaha did the greasing, so it may have to be the manufacturer that you have to ask if you want to stick with OEM grease. And the only reason this may have some importance, is because certain greases may not be quite as compatible with others. A reasonable cleaning of the old bearing, will make this a non issue. Yamalube's Hi-Performance Synthetic Racing Grease uses a lithium complex. Amsoil Dominator Synthetic Grease uses a lithium complex and claims to be compatible with most other greases. I suspect that with either one of these greases or similar, you will be on the right track.

 

[Dr Ecto]

Thanks for all the info. I finally found a good pic and now understand where the 2 bearings are located. I assume winter is coming to an end soon here in Illinois. But this year you never know.