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The front carb float is 'higher' when the carb is right side up, so lower when inverted, meaning the fuel level in that carb is higher than in the rear carb.
There is a fuel filter between the pump and the carbs, but it is up front, near the cover where you add oil (name?). Before I had the carbs rebuilt last fall, the machanic in Toronto put an electric fuel pump in. The mechanical one is still there, it just isn't connected to anything. I am starting to think that the pressure might be too high? He said it was a low pressure, high volume pump, good for carbs. It's a Carter pump, with two numbers on it: P61296S and 03F16B. I have been trying to find this on the net in order to discover the pressure, but havn't been successful.
The needle valve, and for that matter the float action, on the rear carb just doesn't seem as free as on the front one. But that may be just because I have it set now so low (when carb is right side up) that there is not very far to go. The needle has a black conical top, and four grooves down the sides. It doesn't seem to be stuck open, though. The float seems to get stuck, however, against the side of the chanber, when I hold the carb right side up and let it fall down. But I doubt it would get stuck like that when the bottom plate is on, because its travel downwards is restricted (?).
Greg
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