Put a clear plastic pipe onto the drain of carb 3 and 4 tape them on to the side of the tank.
Open the drain screws and let them fill, turn on the ignition to let the pump fill them up.
Now start the bike and run it for a few minutes to allow the levels to settle, leave it for an hour or two and then see if the levels are the same.
You could also swap the slider with another carb and see what happens.It is possible to pinch the float valve seals when fitting them.
Open the drain screws and let them fill, turn on the ignition to let the pump fill them up.
Now start the bike and run it for a few minutes to allow the levels to settle, leave it for an hour or two and then see if the levels are the same.
You could also swap the slider with another carb and see what happens.It is possible to pinch the float valve seals when fitting them.