Chainsaw Repair

hi guys,came here searching for fuel line size  I have 3 of these plus a titan 57 that a lot of parts swap over from but yes coils are a problem,It is hard to see where the fuel lines run  and the one I need to put lines into now have crumbled away leaving some springs and crumbled black hose.I would gratefully take any suggestions on this job,as I dont want to fiddle with the other 2 while they still run they are pigs to start and do need carb kits .
But I will fiddle with this one firstI came here for a look and registered when this site first opened there wasn't much here then and tonight is my first visit back in a long time thanks to a google search link that I came across while looking for the right fuel linbe size.
I was blown away there is enough reading here to keep me happy all winter congratulations it's great