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main jet o-ring

Posted: Tue Mar 28, 2017 12:26 pm
by sprint
OK... I probably should know the answer but still wanted to check with you guys... I have issues with the carbs and took them apart recently, whereby noticing the main jet o-rings weren't in great shape. Studying these parts, I am really trying to understand what the purpose of this o-ring is anyway... I left them out now on all four and it doesn't seem to make much difference, apart of the fact the bike is somewhat jolting around 3-4k rpm.
But itt idles steady and it picks up to accelerate flawless too..

So, do these o-rings have a function, could one explain the jolty ride at the rpm's I mention, in other words.. can I leave them out..?

thx for advice