The only line you should need is the fuel line from the tank to the carb. If it has the vacume pump on the tank then you would run a vacume source to the open nipple.The missing hose near the choke was the water source to heat the carb but most including myself eliminate that water source since it is usually a head ach. There is a nipple on the right side for the vent and some models had a air bleed valve which some require vacume, If you don't have that small diaphram then you have the common carb. You will have a hose at the bottom of the fuel bowl which connects to the bowl drain. Most likely your main problem is a plugged jet from the crappy fuel with ethanol. You will deffinately need to pull strip and soak the carb to clean then blow out all jets and orifices with compressed air since it has set up for a year.
TOM
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