Bonneville America Forums Forums Technical Forums General Tech carb balance

I've tried to use the search function but it doesn't seem to give me what I'm looking for.
Basically, I've looked at the Haynes manual to balance carbs. I've borrowed a mercury tuner, but not sure how to proceed. I know to put the mercury tuner on the vacuum ports, and set the idle to 1500, but do I turn the pilot screws with the D tool I have for the carbs, or am I adjusting just some single screw between the carbs. I've recently experienced some increased vibs and my mileage is dropping so I think it's time for a balance. Thanks in advance.

Its the small screw between the carbies. Dont turn too much as a litle makes a big change. Most remove the tank to get to it.

Removing the tank isn't necessary, just get a good small offset screw driver.

Tom

I just balanced last night and happened to snap a pic of a couple of "tank on" balancing tools.



The first is a pair of german-made slipjoint pliers from Sears.
For some reason, their shape and size makes them handy for all kinds of stuff.

The second is a Milwaukee brand angle driver on a socket & handle.
There are other brands out there too.
They're all priced around $20.

I have a question on this topic too.
What's the size/pitch of the balance screw?
Hex or socket head might be nice there.
It looks like M4-.7, but I thinks it's a finer thread.
I tried a screw that was M4-.7 (I think), & it went in about 3/4 turn & stopped.

thanks gents, I did it today. The Dinqua site was perfection. I didn'take the seat or tank off after finding
that offset screwdriver. I did notice the vibs less noticeable.