83 gs750 Carb sinc

[kpotter16]

im new to this and dont know how to sinc the carbs, any advice for a newbie? order? RPM's? anything that'll make it easier..

[Steve]

First things first, adjust the valves.

Then make sure the ignition system is up to snuff.

Then use a proper tool. Morgan Carbtuneis among the favorites here.

Order? Since #3 is the "master" carb, everything is synched to it. The Suzuki manual says to adjust #2 so it matches #3, then set #1 so the ball in the factory tool is about half a ball higher than #2&3. Finally, set #4 to match #1. How much higher is "half a ball"? There are no numbers on the factory gauge, but most guesses are about 1 cm of mercury. If you have a header on the bike, set all the vacuum levels the same.

RPM? There are discussions on this. The factory manual says "1500-2000". Before I saw that, I had always done it closer to idle speed, about 1200. Some will do it at highway speeds, or 4-5000 rpm.

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[kpotter16]

thats what ive been reading so far. i have headers on it, so all 4 should be level is what your saying?

[Steve]

Yep. .....................

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[BassCliff]

Hi,

You'll find a carb sync guide on my website. Also on my website is a link to Mr. bwringer's website where he has another carb sync guide.


Thank you for your indulgence,

BassCliff