Chainsaw Repair

I've attached a couple of photos of the Snapper carb area and the carb itself. The lighter colored tubing is coming out of the back of the cyl head-havent had it connected to anything...yet.. The other one on the right side and a little discolored is coming up from the tank and I've had it attached to the the upper barb on the right side of the carb. There are 2 small barbs coming out of the purge bulb. One line (the suction side..I've connected that to the lower left barb on the carb. The other barb on the bulb(the pressure side) goes into a smaller diameter hose back into the tank.
The 2nd photo is the front of the carb...the side away from the cyl head.
The 3rd photo is the back of carb..you can see at least the upper barb..the only other barb is hard to make out but is located in the bottom right of the pic. Only 2 hose connections on the carb.

thanks for any help..really do appreciate it-let me know if you need any other pics