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Author Topic: Syncing CB650 Carbs?  (Read 1019 times)

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Syncing CB650 Carbs?
« on: September 19, 2008, 09:55:44 PM »
I have my manometer set up, but I'm somewhat confused on how to hook it up.

I've got all 3 hoses hooked up, but the last hose I can't seem to figure out where to hook it up to. Second cylinder's vent hole is used by the accelerator pump. Anybody know how I hook up my 4th tube to the 2nd carburetor?
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Offline kslrr

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Re: Syncing CB650 Carbs?
« Reply #1 on: September 19, 2008, 10:27:44 PM »
What year CB650?  On my '79 engine, all four manifold vacuum ports are available.  And, why are you referring to the "vent hole"?  Can you take a pic?
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Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
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        1977 Yamaha XS750D (in progress)
Then 1972 CL175
        1964 Yamaha YGS-1T
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Re: Syncing CB650 Carbs?
« Reply #2 on: September 19, 2008, 10:46:07 PM »
Quote from: kslrr on September 19, 2008, 10:27:44 PM
What year CB650?  On my '79 engine, all four manifold vacuum ports are available.  And, why are you referring to the "vent hole"?  Can you take a pic?

'82. I mean vacuum port. Pretty new stuff to me. All 4 are available but the second port has a connector from the accelerator pump screwed into it. Any ideas?
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Offline Soos

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Re: Syncing CB650 Carbs?
« Reply #3 on: September 19, 2008, 11:31:50 PM »
No...that 1 port there goes to your vacuum operated petcock.

just (carefully!) unscrew it, and put your 4th lead there.

l8r
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