Originally Posted by gr8ridn
I don't have the tank yet, but from the instructions it appears the TT Tank vent is led to a tee with the main tank and then routed to the canister. There is a one way check valve also involved that is between the tanks but I can't figure it out exactly. It will likely make more sense when I do the install. The main thing is you don't want the main tank overfilled. Surplus fuel will go to the canister or to the ground if there is no cannister.
I had a thought that making sure the vent hoses go above the level of the TT tank before going to the canister might work? Is there a downside to having gas in the vent line from the main tank for long periods of time? Of course I'd have to get a bunch more vent hose...