Hey guys I have a 1998 cbr600. I need a new fuel valve. Its my understanding that the f3 valves do not have a vacuum line while the f2 valves do. I'm looking at a cheap valve from Amazon. They all say compatible with f2&f3. But every single one has the vacuum line. The stock valve doesn't have a vacuum line. Can I just plug it off or will it work?

I got the bike cheap and don't want to dump too much money into it.
This is what I'm looking at:

Fuel Valve Petcock Assembly For HONDA CBR600 F2 F3 CBR 600 1997 1998 1999 2000 https://a.co/d/5CJzyoc



Any advice would be much appreciated.

 

You cannot just blank the vacuum pipe off, the valve will not pass petrol without a vacuum, but it should be easy enough to run a hose from the vacuum take-off point of one of the carbs to the valve.

Question is, why not just get an F3 valve? Breakers must have them.

 

Thanks for the info.

​​​​​I cant seem to find one, I'm not sure what you mean by breakers.

 

Breakers is the UK term for junk yard (loosely).

 

I don't know what you call them in the US but a scrap yard that breaks bikes and sells the parts.

 

eBay's good source for used/NOS parts for older bikes. Yeah, they get F2 mixed in there as well, but some are genuine F3 petcocks without vacuum port.

ebay - CBR600F3 petcock

Probably better to get old used OEM unit and rebuild with All ***** kit.