Counter sprocket leak

flyingbrick · Post by **flyingbrick** » 02:49 am Jan 31 2011

Hey everyone!
New to dirtbike maint and have been really loving my 01 220, just a question though, it seems to leak a drop or two of oil out of trans where the counter sprocket is, is this a common problem?
How difficult is it to fix?
I wouldn't mind that much but it gets oil spots on the ground and it slings oil everywhere making it a pain to keep the engine/trans clean...
I looked on bike bandit and it looks like its only 2 o-rings that seal that shaft... is that it? Can i just remove sprocket as to change it then just change the seals?

Thanks for the help!
Joe

Post by **Julien D** » 07:00 am Jan 31 2011

I believe it's 2 o-rings and a mechanical seal. You can change them all from the outside after you remove the CS sprocket.

flyingbrick · Post by **flyingbrick** » 11:42 am Jan 31 2011

i don't see a seal on the bikebandit diagram, anyone have a part number or anything like for it?

thanks!

Post by **Julien D** » 11:57 am Jan 31 2011

Lookin in the wrong place then. Check the crankcases fiche.

92050:
OIL SEAL TB3040
864475 (5124-001)
0-99 $12.52

Post by **Mr. Wibbens** » 01:41 pm Jan 31 2011

O rings show up in the tranny fiche
http://s7d2.scene7.com/is/image/Motospo ... SSION?$oem$

http://s7d2.scene7.com/is/image/Motospo ... KCASE?$oem$

gregp · Post by **gregp** » 02:06 pm Jan 31 2011

Most bikes have an O-ring or two under a sleeve, and a regular oil seal that is pressed into the case, that seals against the OD of the sleeve.

gregp · Post by **gregp** » 02:10 pm Jan 31 2011

The seal is # 92050:
http://www.bikebandit.com/houseofmotorc ... #sch309590

gregp · Post by **gregp** » 02:12 pm Jan 31 2011

The O-rings and sleeve can be seen here (part # 92143 is the sleeve, part # 92055 are the O-Rings):
http://www.bikebandit.com/houseofmotorc ... #sch313743

flyingbrick · Post by **flyingbrick** » 05:30 pm Jan 31 2011

Thanks a ton guys!
Just ordered everything so i can fix this and change my oil soon!

flyingbrick · Post by **flyingbrick** » 08:27 pm Feb 02 2011

found a write-up for doing this on a kdx, dunno if it'll help anyone in the future.
kinda sucked having to open all the pics manually though

http://www.thumpertalk.com/forum/archiv ... 46957.html

kevfort19 · Post by **kevfort19** » 09:33 pm Feb 02 2011

Beautiful!!!

Post by **dfeckel** » 10:08 am Feb 03 2011

I bpought a cheapie seal pulling tool at the local auto parts store, which makes removing the seal from the motor 1000% easier than prying with screwdrivers and picking with needlenose pliers.

It looks much like this one:
http://www.harborfreight.com/seal-puller-35556.html

moto_psycho · Post by **moto_psycho** » 05:23 am Feb 06 2011

seal size is 40x62x7

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Counter sprocket leak

Counter sprocket leak