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Looking For Help on a 95' LC4 640 MXC

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I just bought a 95' LC4 640 RXC. It has around 5k on it and it is in great condition. I am still getting used to kicking over big bore single cylinders which seems to be a pain in the leg, but I will learn to love it im sure :banghead:

Anyways there are a few things on this bike that I am going to try to fix or address before I start riding it hard.

1. The bike does not like to shift into neutral unless it is turned off or slightly rolling forward. I figured it was probably a worn out clutch plate for something to that nature... any ideas?

2. When I have the bike Idling at a stop it dies if I don't give it a good amount of gas. I figured I would turn the new mikuni carb up a bit. I was told by the previous owner that it might die because the clutch is worn a bit, but that does not make a ton of sense considering it was in neutral when it died.

3. And lastly I had it up to 65mph and when I parked it last night I noticed 4 drops of oil this morning underneath the front chain sproket. Looks to be leaking a small amount, maybe a sprocket seal???

Anyones help would be great. I would also not mind knowing of any good KTM mechanics in the greater seattle area, prefferably south of seattle by renton or kent. I am hoping to do most of the mechanics myself as I am capable just not knowledgable. Thats why there is Thumper Talk right!!!

Ok thanks all hope to get some replies out of my first post.

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1. The bike does not like to shift into neutral unless it is turned off or slightly rolling forward. I figured it was probably a worn out clutch plate for something to that nature... any ideas?

Either that or mis-adjusted. I had a '93 400 I bought used and had the friggin clutch apart 4 times (and parts replaced) before I figured out the plate stack was in wrong. I was just putting it back the same way I took it out and finally figured the prior owner had put it in wrong. It was a frustrating (and expensive) lesson.

2. When I have the bike Idling at a stop it dies if I don't give it a good amount of gas. I figured I would turn the new mikuni carb up a bit. I was told by the previous owner that it might die because the clutch is worn a bit, but that does not make a ton of sense considering it was in neutral when it died.

R&R the carb & check valves.

3. And lastly I had it up to 65mph and when I parked it last night I noticed 4 drops of oil this morning underneath the front chain sproket. Looks to be leaking a small amount, maybe a sprocket seal???

That or simply too much chain lube??

Ask on advrider.com for KTM shops in WA. There's quite a few thumper riders from there that will help you out.

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Sweet thanks alot. I spoke with a KTM dealer today and got the advice on the plate stack order for the Clutch System so I will put that on the too do list. The chain is very well lubed so that might be the issue I will keep a close eye on it and see if anything changes with time and riding.

The carb deal is already fixed, but I have a different question that seems to be common with this bike. How in the world do you get your carb setup so it will do a happy hot start. I am sick of waiting 4-5 minutes for it to cool down and then dumping gas in to get the bike to start... any idea on that one. Other than that I am stoked on this machine, all the fuss I have heard about the relative size of this bike is non sense. Then maybe I am just bigger then the average person, I am happy none the less.

Thanks for the help Velocibiker

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Does anyone know what kind of Carb's have a hotshot for kicking the bike over when it is already hot. I am getting really sick of riding and being stuck if the bike dies for like 20 minutes until it cools down. Any suggestions... It has a new mikuni carb but I am not seeing any hotshot type buttons on it.

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By the way I guess I messed up the thread on accident.

The bike is a 620 not a 640, you all probably knew that though.

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I have a 1995 KTM 620. I had the same problem as you with starting. I used to kick the bike for hours and I hated the bike with a passion. I finally talked to edelbrock and purchased the New pumper series carb from edelbrock. you don't need to worry anymore about hard starting. I can start my bike hot or cold in two kicks.

As for getting the bike into neutral I have noticed my bike has the same problem. Let me know if you find anything out about it.

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