Sealed Speedo Bearing?

[Rockmeister]

A "non-serviceable" bearing will fail relatively quick. 3-4K miles in my experience.
No matter the seal, junk WILL get in there.

Suggest as others have to drill a small hole or something to allow you to use a grease needle every year on them.

Then the bearing(s) will seriously last!

Rock

 

[Sasquatch]

put the new bearing on last night, it has been confirmed by the dealer and myself the bearing covers are not able to open and not they are not able to seal out the environment as when you spin the bearing you can see through a sliver around the cover of the bearing the grease moving inside. How do I know theyre for sure not serviceable? I picked the cover and bent it a tad in the process, fortunately it was the side facing away from inside of the tunnel. Still haven't found a number for a "serviceable" bearing yet...

If you can see the grease moving the bearing is a piece of crap! I would not use it under any circumstances even if I drilled a hole in it to add grease. If you see the grease through a sliver crack then water can and will get in every ride.

IMHO the bearing is not only non servicable its also non useable. The bearing you took out has a number, that is the bearing you want. The one you put in is going to rust and become junk quickly.

 

[gitrdun]

Oh life was so simple back in the days of my Bravo. Twenty seven years of riding and I didn't even know it had bearings.
Back to the point, Yamahaapex, I know exactly what you are talking about. The original speedo bearing e.g. 2007 Attak, that everyone talks about with the removable seal is the NSK UB205 JAPAN with Torx 20 set screws. The replacement part that you buy from the dealer in Canada, is a NTN ARS205 JAPAN with 2.5mm Allen wrench set screws, with non removable seals. I suspect if you want the NSK bearings, you can order them from a US dealer. The removable seal is the best, in my opinion, at least you can have a look at it, to see what's going on under there.

 

[bjowett]

Don't forget to add the deflector cap. All sleds had this little update by about 2010, but several had it in 2008.

http://www.ty4stroke.com/viewtopic.php? ... =deflector

 

[Yamadooed]

You can use a sharp small pocket knife to remove the seal on a non servicable bearing. I recommend you practice on a junk one to get the hang of it without destroying the seal on a good one.

BTW all mechanical seals are designed to leak.