Echo srm4000 brushcutter fuel and carb hose positions

I've had an old srm4000 that was taken apart several years ago. I've decided to put it together and see if it works.

I've almost completed the task, but I'm stuck at the positioning of the different hoses at the carb and fuel tank. I don't know anyone with the same machine to compare it against and it's a different set up from any other brushcutters I've seen. The purge bulb is separate from the carb and there's a hose that is attached to the aluminium air filter housing. I'm used to working with carbs that have the purge bulb attached and two hoses that go directly onto the carb. 

It would be appreciated if someone could help me get this machine back together.


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