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Locked up cr250?

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i have a 98 cr250 that is locked up.

does anyone know what this could be?

it happened when i was riding.

i was thinking it could be a locked up or seized crank bearing?

Thanks

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Any visible leaks or damage? A little more info about what exactly happened will help others help you....:)

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Did it make a really loud metallic squeek/squeal before it locked up? That would be crank bearing.

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no leaks, i was riding and it just locked up on me.

im not sure what is wrong....

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Pull off the cylinder, take a look at the piston, you should be able to tell if thats what the problem is. If not, try pushing the kick start down with the cylinder off. If its still locked or difficult to push, the problem lies in the Bottom end.

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You won't know till you open it up. Remove the top-end. If the piston isn't broken or the upper rod bearing seized, see if the crank spins by hand. Then you'll know.

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