Grinch

Can you take some photo's as there is a few feeds into the carbs that should be connected up, of see if you can get hold of a haynes manual as that should cover it all.
Though I can easy compare it with the SV I have in the back garden, but do take the air box off to get the shots else we wont see a thing.
Unless its come off the petrol tank, as there are 3 hoses there, one goes to a carb, one to the petrol pump and one to a breather hose if I remember correctly.