Carb Balancing Problems

[Ruby Racing]

For what it's worth here is a picture of the adjuster and springs between carbs 1 and 2, looking from the air filter side.
Number 1 on the left. The bit between the adjuster (at top) and the bottom spring is attached to No 1 spindle. Adjuster and bottom spring seat is attached to No 2 spindle. The top spring is just to hold the adjuster at the set position.
I guess if No 1 butterfly was fully closed (or some how stopped from fully closing), then screwing the adjuster down would open No 2 and also 3 and 4 at the same time. If you think that is a possibility you could try screwing the idle adjuster (on flexible cable going to bottom centre of carbs) in to partly open all the carbs and see if No 1 to 2 adjuster still moves No 2. It shouldn't.
[smg id=2707]

All sorted!


Thanks for everyones help, especially the pic you posted Limax2. When I put the "new" carb number 1 onto the others carbs I just jammed them together, with the result that the tab of the adjustment lever from carb 1 was in the middle of the spring that should have been below it, as per your photo, so that the screw at the top contacts with the tab.


It was a bit of a fiddle to get the tab in the right place and the spring jumped out more than once. About 6 times!!! In the end I put the spring in position then put the carb back on and used the two long bolts that connect all the carbs to pull it in slowly. Once it was just pushing against the side of the spring I managed to flick it underneath with a screwdriver.


The reason I didn't spot it was because the breather tube lies right in front of the adjuster, so in the photo Limax2 posted it would obscure the screw totally.


As for the throttle not snapping back. I think I had managed to cross over the two cables underneath the fuel tank. Fixed now.


And the Carbtune works properly now and I've balanced the carbs so she's so much better now. Not spot on, but it's my project bike and everything will be coming apart again soon. Just need to ride her to see how she runs with the pods and the Dynojet kit fitted.


Thanks again folks.