79 cb650 carburetors install

A

Apexmaster40

New Member
Im trying to put back my 79bcb650 cafe racer back together after sitting for five years. I cant remember where this hose on the carburetors goes to ??
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Where do they connect on the carbs? They might be breathers or they could be the fuel feed (more likely).
 
Agree with teazer. If the carbs have not been modified, the PD50AA used on the '79 CB650 have float bowl breathers that connect carbs 1 and 2 and then also 3 and 4 on the side of the carb body there will be two small nipples, those will connect to a small T with short pieces of fuel line. There is a sort of a fuel rail that runs between all of the carbs, but only has one inlet between carbs 3 and 4. My guess, because there appears to be two hoses starting between carbs 1 & 2 and also 3 & 4, is that those are the vent lines. They don't need to attach to anything.
 
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