Please update on this matter, as I have exactly same problem.
Was it bearing or ????

The reason I ask is to avoid such a problems as knocking,smoking etc.

Dear gentlemen,
Has anybody overhauled B 4204 S engine ? I just wander if there was a serious reason to do this. Some broken parts found ?
My engine ran about 250 000 km and I still doubt if I need to carry out a major overhaul or just to replace some parts. Still no problems with engine itself ...

I did recently overhaul of my compressor, and I needed to completely dismantle and disassemble it.
So, I think what you need is 10 mm spanner only and to be a little flexible to access to clutch.
Another concern is thickness of the shims you use. Don't use too thick as it won't engage .
Good luck

That sounds exactly what I needed.... But I don't know such a service in Ukraine...
OK,the question is if the Spider gets worn, what could be a consequence? The Axle rotating without driving the Wheel ?

That's interesting , just because I do not have any problems with CV joints (no strange sounds, no excessive consumption) , it is interesting
do CV joints wear at all? At least to some allowable limit?

Thank you very much !

This nut I mean

OK, will do. Thank you for your interest .

My user's manual says the noise comes from automatic valve clearance adjustment gear which uses oil pressure. So up on starting the engine the noise will last several seconds until oil gets every part of engine. In some cases this will last about 15 seconds (as I remember).