Hi. Recently bought a cbr600 hurricane for spares or repairs. Needed a new fuel pump and is sparking. The slides inside the carbs are seized solid so decided to buy another set of carbs to try get bike on the road while I rebuild the original carbs as spares. Bike is H reg UK 1988.
Original carbs are 32mm. KEIHN VG but no other numbers stamped on them..The new carbs seem to have fuel line coming in to different area on the carbs and have 2 extra hoses which feed carbs 1 and 2 together and 3 and 4 together. Original carb had 1 fuel line only running into centre.
I'm still waiting on rubber boots to arrive but can anyone help with where these 2 extra hoses feed into the fuel line?

New carbs top pic, orig carbs bottom pic. Fuel line centre on orig carbs. New carbs fuel pipe goes to 'front' of carbs. Whereas original carbs just ran to brown fuel pipe in centre. New pipes highlighted with red arrows.

 

Check the bore of the new carbs, they look like they might be F2 carbs in which case they would be 34mm.

 

Thanks. Have checked the bore. The new ones are 34mm, original are 32mm. Would it be ok to swap these over or is the engine completely different?

 

I suspect that the amount of work involved would be too much and that you’d be stuck with a hybrid that would be more trouble down the line.

Those more knowledgeable than me might differ but I’d return the carbs as “not as advertised” and find some correct ones.

 

I've measured the carb openings and they are actually the same size as the originals and put against each other they match exactly so bore size and position isn't and issue. I think the new ones I have bought are a later version of the f1. I just need to know where the extra hoses go to. If anyone has any pictures of where there fuel lines feed that would help.
Thanks for your help.