31k carbs, what's this do?

[hogie]

I've been trying to resolve some carb issues with mixed success and, for the first time, noticed that the r/h carb appears to be missing the small brass tube, next to the pilot jet. Pic shows r/h carb on the left and the l/h carb on the right, which has the tube.
Does anyone know what it does and whether that tube should be there on the right carb?

[jessy03]

Choke 👍

[hogie]

Thanks 👍do you know the impact of having one carb without the brass tube? I have been experiencing dripping carbs, (i am as certain as I can be the float heights are correct and have replaced the float valves and seats twice trying to resolve this)
I am also experiencing some hesitation in the mid range, could it contribute to those symptoms?

[midlifecrisisrd]

Only the left carb has a choke

It is linked over to the right by the centre link tube

Steve

[hogie]

Thanks Steve, so the good news is this is nothing for me to worry about and the bad news is I still need to keep chasing my original problem 🙃

[jessy03]

Did you take out the brass balls before cleaning? These can clog up and result in poor running.

[jessy03]

I removed the brass ball, then tapped it for a m5 brass grub screw

[hogie]

No I haven't been brave enough to get the drill out yet but I better get on with it.
I like your solution with the screw in plugs, very neat and saves having to ever drill them out again