New CB77 Owner: Where does the gas tank equalizer plug in

48lesco · Post by **48lesco** » Fri Oct 05, 2012 10:32 pm

The crossover line has nothing to do with the reserve setting on the petcock. It just equalizes the fuel level left to right.

When the petcock is "on" it draws fuel from the long brass tube. When the fuel level goes below the top of that tube, you start to slow down...

Switching to "res" draws the rest of the fuel from the bottom of the tank using the other hole in the petcock that doesn't have a long brass tube pressed into it. This time, when you're out... you're out.

I put short hose stubs on both the petcock and tank nipples for the crossover, and plug them with 5/16 ball bearings while I'm figuring out the carbs. Not sure the crossover is really needed unless you run near empty which you shouldn't do anyway.

-48

jleewebb · Post by **jleewebb** » Sat Oct 06, 2012 10:05 am

48lesco wrote:"The crossover line has nothing to do with the reserve setting on the petcock. It just equalizes the fuel level left to right. When the petcock is "on" it draws fuel from the long brass tube. When the fuel level goes below the top of that tube, you start to slow down...Switching to "res" draws the rest of the fuel from the bottom of the tank using the other hole in the petcock that doesn't have a long brass tube pressed into it. This time, when you're out... you're out."

You're right of course...apologies for misinformation...been a few years since I took that petcock apart. --Lee

48lesco · Post by **48lesco** » Sat Oct 06, 2012 10:42 am

Hey Lee - No - I'm sorry my post sounded so terse. I should read them before I punch em thru. Did you get your starter sorted out?
-48

apophis · Post by **apophis** » Sat Oct 06, 2012 12:02 pm

The result it I have the original gas tank with a late petcock. I will have to watch ebay for an early one with the extra spigot. I feel less crazy now.

jleewebb · Post by **jleewebb** » Mon Oct 08, 2012 11:06 am

I didn't realize Honda did away with crossover tube on late models...interesting...post a pic apophis?

48, starter is working every time after rotating by hand and banging on it. Chickened out on taking it apart so not sure if I can call it "sorted."

bonjour · Post by **bonjour** » Thu Oct 11, 2012 12:07 pm

Here's a pic of my late petcock.

I have to say that I don't have any trouble's regarding the fuel left vs. right.
When driving the fuel get's to the other side via bump's and turns etc.

Probably a reason why Honda got rid of them, I don't consider it as a necessity.

On the tank however I do have a tube on the right side, my CB77 is from 1966.

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New CB77 Owner: Where does the gas tank equalizer plug in

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