Maintenance & Technical > KX500 Original

K5 vibrates real bad.

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dirkster:
also have 4 br8eg plugs for plug tests and br9eix when i get the jetting figured out

Foxx4Beaver:
you're on the right track.
be sure you get GENUINE Keihin jets!...aftermarket jets are no good.

I like to purchase from these guys...they're pretty quick with shipping...
http://pjmotorsports.com/

dirkster:
cycle barn had genuine keihin jets got, 165,168,170,172 mains and 52,55, 58 pilot and a new air filter. putting in the 55 and 168 now.

alward25:
I have not seen this mentioned yet so let me know if I missed it.

The crank being out of true will cause a lot of vibes.  I would overhaul it and get it balanced, trued and welded.

dirkster:
alward, i thought about that a while ago but i just rebuilt the engine 2 months ago. the weird part is that it ran perfectly smooth, on par with my cr250,  for about 3 days then fouled a plug and has been terrible ever since.

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