Question about 2001 KTM EXC 125

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Clutch wasnt sure if this should go in the 2 stroke or tech questions ive heard people talk about a clutch slipping

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Where it doesnt fully engage but I am having the opposite problem where I can not get my clutch to disengage. I have the top cable adjuster-adjusted so there is about a nickels (few mm) worth of play where i can pull the clutch lever that much before the cable really starts pulling. With it on the stand when i start it and put it in gear the wheel spins (enough that it is hard to stop the wheel and if i do the bike stalls) even with the clutch lever pulled all the way in and when riding it, the clutch doesnt actually seem to engage until the lever is almost all the way out. I adjusted the cable adjuster and unscrewed it as far as it can unscrew which was considerably further out then it is with the nickels worth of play and it changed nothing aside from the tightness of the lever/cable. On the stand the wheel still spins and stalls if i put enough force on it to stop the wheel and when riding the clutch still seems to engage and the same point (where the lever is almost all the way out). I think when I am on it and put it in gear, it doesnt stall becuase i keep the Rs up and my weight keeps the back tire from turning and slips the clutch?? Any comments, ideas, advice, etc. would be greatly appreciated. Thanks in advance. ,well , the most obvious is a worn out clutch..BUT it can also be from the plates sticking together, or the springs are beyond their service limit. you can check and change all this at once.... 1) drain the oil 2) take off the clutch cover 3) loosen the screws that hold the pressure plate 4) check the springs (they should be a specific length , over time the length decreases) 5) take out pressure plate 6) check every plate , you can check thickness with a good caliper.( if the pads on the thick discs look worn or are not there the clutch is worn and you need a new set of plates) if they discs are still in good condition try cleaning them with a solvent like alcohol etc...but be carefull you do not use a aggressive solvent as the pads are made from cork and some solvents will damage the cork . If you change the pads the best thing to do is change the metal and the friction pads aswell as the springs. there's a trick to use a clutch that's worn down alot and that is to add another metal plate to the outside so your total stack height becomes higher , however this will only help you 1 or 2 heats after that the clutch is toast either way. hope thats FIXYA.,,,

Posted on Nov 10, 2008

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Im 16, and ive never ridden a 2 stroke in my life and im thinking of getting a yz/sx 125 for trail riding. ive never been able to afford a modern 4 stroke so ive been riding a crf230 and a 1980 tt500 yam....


I would suggest a 250 2-stroke or a 4-stroke. Lots of power, lots of pull and the motor would likely last you for years. I've raced both the 125 and the 250 2-stroke at the pro-am level (A-class) and the difference in engine life is tremendous. I would re-ring a 125 every week (running 26:1), while with a 250 I could go for 2-3 months or more without doing the top end while running 32:1.

A YZ 125 will definately be a bit of maintenance - primarily because it has a single ring and the ring doesn't last long. A pro or semi-pro racer would re-ring every race (when the 2-stroke was popular) - some races I would re-ring in between motos. I know you won't be racing, but I would still imagine you would want to freshen up the top end at least every other month at the most. Granted - you can re-ring a 125 in about 45 minutes for a cost of about $18 if you know how and it costs a LOT more for a 4-stroke and is more of a job.

Other than the ring, the rest of the maintenance will be about the same between a 2-stroke and a 4-stroke. You'll still have to do your air filter every ride and your engine oil (tranny oil in a 2-stroke) every other ride. Tires, spokes, sprockets, clutches, chains, brakes - all pretty equal maintenance between the two. Lots of variables, of course.

The difference will be keeping the motor fresh and for that, the 4-stroke will beat the 125 2-stroke. Not the 250 2-stroke, though - these motors last as long or longer than the 4-stroke and are a LOT cheaper to maintain/rebuild.

This is MY experience and my opinion. Your mileage may vary.

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How much oil do you use


Answer 1. Engine oil. On *** bikes its usually stamped on the side of the clutch cover. Or there is a glass window with a little - (dash) for the upper & lower levels. Or a dipstick on the clutch cover filler cap.
Answer 2. If your talking about a 2 stroke & want to mix oil/petrol I recommend you ask a Honda dealer what the correct mix is.
Answer 3. It would have helped if you had told us the Make, Model, engine size, year, type of engine 4 stroke or 2 stroke.

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Police 1000


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