Thanks ! I re-fitted a new o-ring in the correct place. The old one was broken in 2 pieces and worn out. Now the idle mixture screw is actually working and I could tune it (with warm engine) to have the best mixture. (it was betweem 2.5 and 3 turns out).
The starting problem is still there and I think the choke circuit might be clogged up a bit !
The rpm raise with choke but not too much maybe close to 2000 rpm and I've seen on the internet that some bikes when choke is pulled rev towards 2500-2800 rpm ... this could be one of my problems since the idling immediately after starting happened only when the weather got colder (0 degrees C and bellow)
Do you happen to know if it's possible to remove only the lower part from the carburettor without taking them off from the bike ? It's freezing outside and I work at -10 degrees C.
Would be nice if removing of the float bowl is possible without taking of the carbs.
Thanks !
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