pulling carbs - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 18 (permalink) Old 02-28-2012, 06:00 PM Thread Starter
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pulling carbs

The last set of carbs I pulled were on my CB900 inline 4 cylinder. These were some of the hardest carbs I have ever pulled and or worked on. Until I looked at the ones on the VN750.

It there a trick to pulling these carbs. I have to clean these carbs and need to get them off. Any help would be great.

Blessings!
Richard
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post #2 of 18 (permalink) Old 02-28-2012, 06:31 PM
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No tricks exactly, but there are things that will make it easier. First remove EVERYTHING that could possibly be in the way. Do not remove the throttle cables. Remove the seat, tank, steering head covers, fuel lines, the ducts between the surge tank and the carbs, then take something and tie the surge tank up tight against the frame. If you don't, it will keep falling down and you will never get the carbs off.

You leave the manifold on the front head, but you remove the rear one from the head, and it comes off with the carbs. The carbs are actually one piece. Spray WD-40 all over everything to make it slippery. The carb assembly comes out the right side with the throttle cables still attached. They actually come out fairly easily when you get them lined up right, but it has to be just right. Be patient, and keep moving them around a little, till you find the right spot. Excessive force should not be necessary.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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post #3 of 18 (permalink) Old 02-28-2012, 07:06 PM Thread Starter
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Thanks for the info. I am going to pull them Saturday to cleaned them. Hopefully I don't have to re-kit them. Are there kits available for them?

Blessings!
Richard
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post #4 of 18 (permalink) Old 02-28-2012, 07:16 PM
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Quote:
Originally Posted by mrseedsower View Post
Thanks for the info. I am going to pull them Saturday to cleaned them. Hopefully I don't have to re-kit them. Are there kits available for them?

Blessings!
Richard
Have you tried a good dose of SeaFoam? Might save you a lot of trouble.

JM2001

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post #5 of 18 (permalink) Old 02-28-2012, 08:23 PM
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Quote:
Originally Posted by mrseedsower View Post
Thanks for the info. I am going to pull them Saturday to cleaned them. Hopefully I don't have to re-kit them. Are there kits available for them?
Blessings!
Richard
OldHipWesTex posted that he found a supplier in this thread:
https://www.vn750.com/forum/showthread.php?t=19931

Direct link to site mentioned in thread above:
http://www.siriusconinc.com/search_r...earch&x=21&y=2

Gordon

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TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
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post #6 of 18 (permalink) Old 02-28-2012, 09:50 PM
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Since these carbs are together do they need to be sincd
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post #7 of 18 (permalink) Old 02-28-2012, 10:28 PM Thread Starter
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When I had my CB900 Custom the Honda service center said that these old Klein carbs leaked all the time and there is nothing that could be done. I done believe that nothing is impossible.

Found Seafoam and a inline fuel filter did the trick. Later found that the Honda people wanted to sell me a new bike instead of fixing my old one, never went back to them.

I didn't know that Seafoam would clean carbs that has sat with gas in it for a while. I am going to pull the carbs and clean them then put my inline fuel filter and then do the seafoam thing for a couple of tanks. That will fix anything.

Thanks for y'alls help.
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post #8 of 18 (permalink) Old 02-29-2012, 10:35 AM
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You know you can add pure Sea Foam to the carbs and let it sit for a couple of days. Doesn't always work, but I'd try that before pulling those stinkin' carbs!

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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post #9 of 18 (permalink) Old 02-29-2012, 10:53 AM
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Quote:
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Since these carbs are together do they need to be sincd
Yes you need to balance the carbs
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post #10 of 18 (permalink) Old 02-29-2012, 06:13 PM
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Depending on how bad they are, filling them with Seafoam and letting them soak for a while can work. When you put the Seafoam in, try to start the bike. It probably won't run, but it should fire a few times and make some smoke. This actually uses engine vacuum to suck Seafoam up into the jets.

If you remove and separate the carbs, theyshould be re synchronized, especially if they haven't been since you got the bike. When I had my carbs off to rejet after installing an aftermarket exhaust, I synchronized them. But when I had them off again to rejet again after going back to the stock exhaust (expensive lesson learned) I just checked the throttle plates before I separated them, both were completely closed, both held WD-40, so I know one was not a tiny bit more open than the other. I just put them back that way, and it ran fine. Both throttle plates in exactly the same position is where they should be, if both cylinders are the same. But if one cylinder has less compression than the other by a noticeable amount, it will also have less vacuum, and the carbs need to be set to compensate for that. I have a Motion Pro mercury synchronizer I bought about 15 years ago, brand new, for less than half what they go for today.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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