That'll be the pair of small hoses at the filler neck.
interesting, knowing the multiple hoses on the C14... one is the overflow, located above the pressure cap, the other is a bleeder/purge hose coming from the thermostat housing on the "hot" side, into the radiator below the pressure cap's seal...
not sure. it was a new LEO bike. it happened during an PO Basic Motor School. I took it to the dealer and had to ride it hard in the lot to get it hot enough. They took it in to the shop and advised that the coolant hoses were reversed. I can call and ask them if it is necessary.
with the explanation I gave above, I would think it took quite a bit to get the bike up to "hot" as essentially the pressure cap was not sealing the system anymore, and the radiator was constantly venting to the overflow tank, with the hose being higher than the actual coolant level in the radiator. In that scenario, temps would remain cool, and the system was never really "pressurized", nor was the coolant bled from the thermo housing going anywhere, because it was sealed between the pressure seal, and outer cap seal of the cap.
Those hoses are different sized, i'm surprised there wasn't a major leak when the larger bleeder hose, was installed on the smaller overflow tube at the filler neck.
This system also has an additional hose that is a bleeder/purge line running from the waterpump, up to the thermostat housing also, this is on the "cold" side, or return side of flow. The whole system does provide a much better sealed system, and reduces any chances of cavitation requiring extensive air purging when all is working correctly.