Big Red question

[maxdallasfan]

On the 85 BR I just picked up, there is a black tube that is unconnected beneath the carb. I traced it back, and it connects into the top of the shaft drive. Is this the carb drain line, or a vent for the shaft?

[atc007]

Diff vent. Was routed up under the tank,along with the rear brake vent.

[maxdallasfan]

Thanks for confirming that.