Maintenance & Technical > KX500 Original

Bottom end/Transmission issues

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Danger4u2:
Post your questions/answers here.

mustangfury:
This question is for a 125.

When the engine on my bike is running, there is a tapping noise that comes from the crank area.  It could be from the clutch or the transmission.  I am not sure what it is.  It does it when the bike is in neutral and in gear. The tapping increases with engine speed.  It is a very light sounding tap but it is still there.  Sometimes it is louder than others.  The best way i could describe it would be to take and run the plastic handle of your toothbrush across the rollers on your chain fairly quickly.  The noise is not coming from the cylinder. I don't know if this is normal transmission noise or if there is a problem.

There is no slipping in the clutch. I had the clutch apart about a year ago and everything in there looked like it was just out of the shop.  The gears do not grind when shifting and the bike shifts very smoothly. there is no performance issues, i just want to be proactive on a possible future problem.  I don't know if some bearing is wearing out or something.

Any ideas?

thanks,
Stang

cutting torch:
Does your kick idler gear still have a bushing in it? The '87 I got had lost it's bushing and the snap ring that retained it to the end of the output shaft. It did a bang-up job on the back of the clutch basket!

That's all I can think of that would make a very noticable racket.  :?

torch

junk man:
hey guys i have a question
will a kx250 kick starter fit on a 97 500 engine are the shafts the same size  :?
also the engine is in a 2000 kx250 frame

thanks for any help   JM


hey torch thanks

cutting torch:
No, different shaft size.

torch

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