CBR 600F2 1991 - 1994 CBR 600F2

gas tank Fuel line hoses

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Old 03-18-2018, 10:28 PM
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Default gas tank Fuel line hoses

Help! So I can't figure out what the gas tank fuel hose attaches to. I bought this bike for a few hundred dollars and I think they're missing a few fuel line hose attachments. I can't find a good enough diagram to order the parts. Can I just buy them at a local auto parts store and do it myself? Thanks.

1991 Honda CBR 600 F2


 
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Old 03-19-2018, 12:55 AM
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600F2
 
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Old 03-24-2018, 06:58 PM
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I appreciate that picture. Seriously. I bought the hoses from AutoZone and it sounds now like it's one step closer to starting but nothing. You wouldn't happen to have a picture of what it looks like underneath? Just a shot in the dark. It seems that when I tried starting it, it was leaking from the left but I'm not sure what fuel lines need to be connected underneath. Thanks again though.
 
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Old 03-24-2018, 08:46 PM
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Between carb #1 and #2 (near the top of the carb) is a tee. Between carb #3 and carb #4 is another one. These are the bowl vents. A line is connected to each tee, and they lay horizontal and parallel to each other at the back of the carbs, with a loop sort of holding them together. The pic I posted shows the one between carb #1 and carb #2 pointed nearly straight up and on top of the fuel rail instead of underneath it (Edit: I think that may be right, that the vent lines sit on top of the fuel rail rather than underneath it) and you can see the plastic loop near the end of the line. The line that's supposed to connect between carb #3 and carb #4 is missing... The end of the line opposite the tee is open, as it must be to function as a vent.

On an F2, the only other hose connection is the fuel line. The larger 1/4" line connects to a tee between #1 and #2, and another tee between #3 and #4. These join to a plastic three-way tee and a short 'S' shaped piece that plugs into the tank petcock.

Might mention that the tank petcock on the F2 is vacuum actuated. A small line runs from the petcock to the #1 carb. Without this vacuum, fuel cannot flow. Also, if the diaphragm internal to the petcock is ruptured, fuel may leak and may have trouble flowing to the carbs. I started having issues with my vacuum petcock and replaced it with a '98 F3 petcock that is not vacuum actuated, and plugged the vacuum fitting on the #1 carb. Works fine, just have to remember to turn the petcock on when I start up and off when I park.
 

Last edited by EchoWars; 03-27-2018 at 04:28 PM.
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