I'm trying to get my head round this. If he just pushes the bike forward while idling, brakes and stalls it, then I would be looking for something electrical. Perhaps a loose connection, a trapped wire, or even a dodgy ignition switch. (I had an issue with my XT where touching either brake caused the engine to stop. I worked out in the end it was a poor connection in the main switch, and the extra load of the brake lights was causing the circuit to open. New switch cured it immediately.)

However, if the bike is stalling after a period of running when the throttle is released (and, of course, the brakes applied ...) such as when exiting a main road or coming to a junction after a faster run, then I would be looking at mixture, worn needles and/or jets, and possible air leaks.

Anyway, that's the best I think I can offer from a cold, wet climate 7500 km away.

You could have knocked the nail on the head Black Dog. The common theme appears to be applying the brakes. As you said, you had the same problem with an XT. Worth a look before tearing carbs etc apart.

Did you fix this already?

Could be. This is an international forum, and I am quite happy to work around language difficulties where I can. But I think I have reached the end of what I can offer here.

OK, guys, a tray to adjust the float neddle and level. I still I got the same problem. I found out something that might give somebody a clue: when I close the petcock valve it does not do stall. So it is not an electric problem.

One question: how petcock is associated with electric stuff?

I have the feeling that you doubt that my problem is real and that Im pulling somebody`s leg. Let me tell Im not. For sure we have the language barrier.

What I meant in my last post is that it is not an electric problem but a problem with the carb.

Well, yeah, it starts to look like that after such a long discussion.

And your topic says "can the cam chain slack produce failures?", and my answer would be very short: YES! If there's slack where it is not supposed to be it not only can, but it will produce failures, and major ones, at some point. So if you do something, do it once, and do it right, or you will have to do it again.

Read your reply once again... Does that make any sense to you?
Sounds to me more like "when I clap my hands my bike doesn't stall, so it is not an electric problem". How does clapping hands and bike's electricity could be related? (unless there's clapping sensors, but let's not go that deep...)

And more "it does not do stall"... So does it stall "does do stall" (grammatically incorrect but my grammar isn't perfect too), or it doesn't stall "it does not stall"???

And yeah, if I close the petcock on my bike it won't run very long too... It needs petrol to run.

I'm not trying to be harsh, I'm trying to understand what you want to say... bier

Carb problem??
 

I'm not sure what is meant by 37 countries in this context, but you guys haven't got out of the start blocks yet for misunderstandings of language, cultural differences of approach in describing issues and how to communicate.

I read this thread more or less every day to see how the multi-cultural, multi-ethnic, multi-religious belief, multi-language (including especially those who do not use English as their native language) individuals are getting along.

Patience is needed (hang in there guys!) and it could just be an issue with the carburettor?
Flooding carb for instance?