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Author Topic: Has anyone changed main jets without removing carburetor? -CB650  (Read 624 times)

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Offline raiken1

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Has anyone changed main jets without removing carburetor? -CB650
« on: September 23, 2019, 08:05:40 AM »
Has anyone changed main jets without removing carburetor? I am not sure if I need to go up a size yet as I'm still doing some other checks, tuning etc; but if I do I am wondering if it's possible. It is really a wrestling match getting the carbs on with the airbox and getting everything leak free. My bike is a 1981 CB650 with CV carbs.
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Offline 1976cb750f836

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Re: Has anyone changed main jets without removing carburetor? -CB650
« Reply #1 on: September 23, 2019, 08:11:40 AM »
Many times, some are easier than others.
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Offline Scott S

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Re: Has anyone changed main jets without removing carburetor? -CB650
« Reply #2 on: September 23, 2019, 08:22:35 AM »
 If you take the bowls off, replace the screws with Allen head bolts. Much easier to work with if you have to go back in.
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'17 Triumph Street Scrambler
'81 Yamaha XS650

Offline raiken1

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Re: Has anyone changed main jets without removing carburetor? -CB650
« Reply #3 on: September 23, 2019, 08:30:03 AM »
That’s possibly great news. I actually already changed all the bolts with stainless Allen heads when I did the rebuild.

Has anyone specifically done this on a 650 with CV carbs?
« Last Edit: September 23, 2019, 10:05:33 AM by raiken1 »
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