LOL,,hell i dont know what the hell those hoses are for but i will find out when i put it back together this weekend. I wondered the same thing but i was in a hurry ripping it apart and just moved them out of the way and didnt bother with them yet.
Overflow tube , breather tube and reservoir tube all run through there , I pulled my shee cylinders to do a top end and found some nice port work done as well