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  #1  
Old 11-03-2017, 12:09 PM
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Default 2004 KX125 Clutch/trans issue

     

So I had to replace the crank on a 125 that I picked up from someone, got it all back together, runs amazing but I have no other gears but 1st. It feels like it shifts into other gears but there is nothing there when I try to ride it. First gear pulls like crazy but nothing in 2nd up. I did not replace the fiber clutch plates and at first thought this could be the issue but wouldn't 1st slip too? Any help would be great! Need to get this bike running and sell it to pay a couple bills.

Oh and on the stand it will shift and spin the tire but nothing with my 200 pounds sitting on it, not even feeling it pull some but if I let the clutch out in 2nd or any other gear up, it kills it.
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Old 11-03-2017, 01:21 PM
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The clutch will slip more in the higher gears as the resistance will be increased. Check your clutch plates, and springs.

Paw Paw
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Old 11-03-2017, 01:58 PM
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I'm just going to buy new friction plates, springs and bolts....whats the worst that could happen, right?...lol

Oh and I was really hoping you would be the one to answer this post, I have browsed many other posts and you seem to be the resident expert that provides the best advice!

Thanks
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Old 11-03-2017, 02:32 PM
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Be sure you use the proper oil as if it is incorrect it will cause clutch slippage. I would also inspect the steel plates as they may also need replacing with so much clutch slippage. That slippage can cause them to over heat and warp.

Paw Paw
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Old 11-08-2017, 04:00 PM
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Don't just replace them because you think that is the problem. All you have to do is put a caliper on them and measure. If they are under, replace them. If not, look elsewhere for the problem. It is highly unlikely that your clutch doesn't slip in first, but slips 100% in all other gears.
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