My unit is a bit different. Directly under the carb and to the left of the air filter the hoses are wrapped in gray foam. Not sure if I can get at that lower bowl drain plug without removing the foam 'insulation' first. Must be part of the 'Cold Weather Technology'.
I see on the Honda generator website they refer to Cold Climate Technology as some kind of breather heater. You can buy it as an accessory for about $80.00 Seems there was a problem with the breather hose freezing up so they came up with this 'fix'.