Question about 2004 KTM MXC 525 Racing

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Oil leak I have an oil leak on my bike where the countershaft sproket goes. I replaced the seal and it still leaks the same amount if not more. It is a bad leak

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Not just a few drops. Any ideas on exactly what parts need replaced besides the seal itself?I put RTV black around the perimiter of the seal. That seemed to do the trick. That was the second time I replaced my seal. When I replaced it the first time I made it worse somehow.,

Posted on Nov 10, 2008


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After riding the bike the oil warms and thins so finds it easier to find its easy out.
It sounds like you have a leaking seal that needs replacing.
Found out exactely which seal is leaking by wiping all oil off the bike and getting down and watching where it comes from it will start with a drip then go from there

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The oil seal on the sprocket shaft has probably gone bad. Remove the sprocket then clean the shaft to aid in removing the old seal. A screw driver and small hammer is used to pry the outer edge of the seal inward. Realize that you will butcher the old seal in the process of removal. The only other way to remove the old seal is to pull the engine and split the center case.

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Oil leak from motor. possibly coming from side case. I'm thinking countershaft seal ?? Any ideas. I bought the bike today at an auction. I think it has been sitting for a while. It has 83500km. As I rode...

depends on what side its coming from if its the left then i would check the output shaft seal out and while near there check the gear selector shaft seal both are cheap and easy to replace and just check the other casings to see if the gaskets have started to deteriate causing a leak hope this helps

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1 Answer

I have a 2008 Kawasaki KLX 450 R with an oil leak behind the front sproket, do you know what is behind the front sproket that could be leaking? How hard would it be to fix it?

It is an output shaft seal. Shouldn't be too hard to do depending on your skill level. You will need to have something to pull the seal out, and make sure you put the seal in squarely.

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1 Answer

Why is my gear box leaking oil

you need to replace gaskets.look at the rear bearing retainer gasket and extension case gasket.countershaft cover side gasket.also check the shift lever cover seal for leaking.

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2004 honda shadow 600 VLX leaking fork seal bike has 600 miles on it should I replace left and right if only right is leaking.

check first to see if the leaking fork has any rust pitting on the chrome,if it has and its a very small blemish then fettle it off first,and just replace the leaking seal,as the saying goes..if it aint broke dont fix it,if the seals had been in the forks for years and the bike not used then consider replacing both..

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1 Answer


the countershaft seal can be pried out easily,just dont do much damage to seal surfaces(on the motor).

as to your jetting problem,put the clip on the main needle back to "stock".

and buy several "main"jets,larger,and,smaller.
"jet-tests"MUST be done after a high-speed test(check sparkplug color,should be "tan")

poping,most all the time (on bikes)is caused by an air-leak somewhere along the exhaust system,

ALSO,when you change:
--it's a GIVEN to re-jet the carb!!

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