20 Most Recent 2002 KTM LC 4-E 640 Enduro Questions & Answers

Hi! It's normal and nothing to worry about. It can really moved by bare hands. Hope this helps and thank you for using FixYa!

your coolent bottle has a pipe on, trace the pipe and just simply pull it off aat the end and catch the coollent in a bottle of some sort, put the pip back on and your ready to refil and go :)

Make sure the inner spring, does not have the ends overlap as this can stop the thin rings from compressing

I don't think that it would be you coil, look into your switches and wires, I haven't gotten to work on one like that yet but they all have the basic set up bar kill, side stand, neutral and clutch. From what your saying i would start there. After making sure that they are working and still no spark start at the coil and with a test light check to see if the light flashes when you spin the motor. If so we know that the pick up is working and the coil is likely at fault.
hope this helps some, don't forget to clean your spark plug
Mark
C.C. Motorsports

depends on what material is stained.. Aluminium stains can be very tricky to get clean if not impossible...some cleaners will also cause a orange/reddish stain wich will not come out unless you use some harsh chemicals to get them out. problem is it's hard to get to those chemicals. IF you happen to have a truck wash nearby where they wash the big trucks (18 wheelers)take your parts there and tell them to use some brightener on it it's a chemical that really cleans aluminium.it may cost you a little bit of money but that stuff really works and i haven't been able to find that stuff for private sale anywhere. the number 2 reasons for stains on the bike are : 1) waiting to long to wash the bike some types of sand/mud especially the red dirt we have down south here will stain a bike if you leave it on the bike not only that it dries as hard as concrete and is very difficult to remove , so was your bike ASAP. 2) washing chemicals. Some chemicals / soaps when they are left too long on aluminium will leave stains as it reacts with the aluminium , these stains are almost impossible to get out. ,,,

u can take the current ones off by simply heating them to warm the cement then pull...if that doesnt work u could use a razor blade but bake sure that u dont cut anything. you could put the wire around the grip if u want its all up to u.

all was good!! any ideas what happened and can I fix it so it doesn't do it again?i think you'll find the crapy standard slave cylinder is about to expireget a nice billet aluminum one from evoluzione cyclesports in California at evoluzione.net. Iv'e had one on my 990SM since March and have done 5500miles with no hint of troubleit has double '0' rings on the piston,the KTM part only has one which allows the piston to cock-over and leak fluid,just take yours off and have a look. I had 2 fail on my 950SM and 1 on the 990SM,the mineral clutch fluid gets very black from engine heat,changed the fluid several times but never could trust the standard one wasn't gonna let me down.,,,

LC4 Supermotofor rideand on the way back nowwater started coming out of the over flow pipe,thats on the top of the radiator,and when i was clossing the throttle,and opening it back out,there was huge smoke coming from the exhaust,i stopped at a garage to top it up,and i got hel of a job to restart it,she was just smoking her head off,when the starter was turning,can someone tell me what,they reckon has gone on it,thank you,peter,sounds like you got an airlock in your cooling system somehow which has caused the engine to overheat, boil over and pop the head gasket.,,,

It holds 2.1 liters, including the frame. Maybe you didn't drain the oil from the frame.

Check your valves. they might be tight. possible shimming required there to get them back to spec

That would be like riding a fixed wheel bike.Think about how you will stop and start. Only hydraulic fluid will leak. Bad idea!

Question edited for clarity. That sounds like it is just a bad connection somewhere or possibly a bad switch. Remove the battery leads and clean the lead contacts and battery posts with a wire brush. Smear with Vaseline and reconnect. Remove the starter leads and do the same. Then it could be the Starter Relay https://www.google.com/search?q=ktm+450+sx-f+starter+relay+location Or Starter Button https://www.google.com/search?q=ktm+450+sx-f+starter+button+replacement ..

personnaly I would replace cylinder with new OEM

All dirt bikes have a VIN. It is on the steering neck. https://www.google.com/search?q=vin+on+my+ktm+300 ..

Have you checked battery connections. Run switch in the correct position? Checked spark plug for debris? Just thinking out loud..

Drain oil. Use degreaser to clean area. Use JB Weld & allow to set up properly before adding oil.

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Hi, try to see this link and looking for the manual that you need. https://www.pdfmotomanual.com/manuales/ktm/eng I hope to give you an help. Luca

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Hi, most likely your cdi unit or ignition coil needs replacing.

took me a min or two of WTF-ing to see pic and realize you meant a 2-stroke motorcycle..