Carb rebuild advice needed - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 10-06-2009, 09:27 AM Thread Starter
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Carb rebuild advice needed

Ok, so I have searched and searched for part numbers for a typical carb rebuild and come up empty, also come to find out their are no rebuild kits for our carbs. Can someone help me out with what I need to order to rebuild my carbs? I am going to order from ronayers.com since everyone seems to be happy with them.

Can someone post the part numbers that I will need to order for a carb rebuild?

I am also going to do an ear shave at the same time since my bike is apart, I was going to order the jets and needles from motorcyclecarbs.com. I think I have all the part numbers for that, but if you would like to post those as well I would be more than thankfull.

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post #2 of 15 (permalink) Old 10-06-2009, 09:41 AM
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I'm just bumping this for you, someone will chime in soon with info!

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post #3 of 15 (permalink) Old 10-06-2009, 09:42 AM
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You should order the gaskets that go with the float bowls and the jet cover (the latter are kind of a pentagonal shape). You should also go to Home Despot or Lowe's and pick up some replacement bolts for the float bowls - 5mm x 12mm. I've been going with the flat heads (that is, for flat screwdriver) 'cause the phillips heads are a PITA. On that note, you may find that the existing screws are nearly impossible to remove - the heads strip, etc. You can drill them out, though, just be careful. Also pick up 6 5mm lock washers for the same. Finally, you'll need some tiny hairpin clips to re-fasten the rods on the throttle plate. I think I've been using 7/32 from HD or Lowe's - don't get the tiniest ones (too small); but the next-to-tiniest will work fine. However, get a few, 'cause they're easy to break when you're trying to wrap them.

Motorcyclecarbs.com is out o' business (a couple of us had very bad experiences with them - either it was a sign that they were on the way out, or the reason they folded!). Your local Kaw shop may have the jets you need (140 mains, 40 pilots; 2 shims per needle).

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post #4 of 15 (permalink) Old 10-06-2009, 09:49 AM
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Quote:
Originally Posted by Mellow View Post
Ok, so I have searched and searched for part numbers for a typical carb rebuild and come up empty, also come to find out their are no rebuild kits for our carbs. Can someone help me out with what I need to order to rebuild my carbs? I am going to order from ronayers.com since everyone seems to be happy with them.

Can someone post the part numbers that I will need to order for a carb rebuild?

I am also going to do an ear shave at the same time since my bike is apart, I was going to order the jets and needles from motorcyclecarbs.com. I think I have all the part numbers for that, but if you would like to post those as well I would be more than thankfull.
Basicaly you will need 2 jet cover o-rings and 2 float chamber o-rings. As long as your air cut and pistons diaphrams are in good shape you should need nothing else. If you tell me what filters you are using, exhaust and elevation above sea level I will tell you what jets you need. I would not order from motorcyclecarbs.com unless you don't mind waiting a month or more.

Jet cover o-ring: 92055-1290

Float chamber o-ring: 92055-1291


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post #5 of 15 (permalink) Old 10-06-2009, 11:46 AM
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Pay special attention to the plastic fuel line elbows (they tend to crack) and the floats.

Completed
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Front- 100/90-19 Avon Wide White Walls (cause I couldn't find the 110's)
Rear- 170/80-15 Avon Wide White Walls
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Powder coated rims Red
14" Apes (cause they didn't have 16" in)
Custom Seat
Ear Shaved
Aftermarket headlight & tail light
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post #6 of 15 (permalink) Old 10-06-2009, 01:01 PM Thread Starter
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Cool, thanks for the advice guys, this will be the first time I have done a carb rebuild, done lots of other stuff but not taken the time to break down a carb, personally I would rather run a can of seafoam through it but this carb is to gunked up.

1993 Vulcan 750 - SOLD
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post #7 of 15 (permalink) Old 10-06-2009, 01:14 PM Thread Starter
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With the floats, how do you determine when a float is bad? Cracks?

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post #8 of 15 (permalink) Old 10-06-2009, 03:14 PM
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Quote:
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With the floats, how do you determine when a float is bad? Cracks?
That's one indicator. Another way is weight it down (don't use a cinder block!) so it is completely immersed in gas and leave it overnight. If it has any gas inside it in the morning, or you see bubbles coming out of it, it leaks.

I'm keepin' all the left over parts. I'm gonna use 'em to build another bike!
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post #9 of 15 (permalink) Old 10-06-2009, 04:50 PM Thread Starter
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I tried searching youtube but came up empty, has anyone made a video of how to do a carb. rebuild yet?

1993 Vulcan 750 - SOLD
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post #10 of 15 (permalink) Old 10-06-2009, 04:56 PM
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Quote:
Originally Posted by Mellow View Post
I tried searching youtube but came up empty, has anyone made a video of how to do a carb. rebuild yet?
Not sure about the video.
I separated the carbs and took one apart at a time. That way I could use the other as a reference in case I forgot how anything went back together. Also, make sure you look closely at how the starter plunger bracket goes together. I spent an hour trying to figure that out
Lance328 and Crobins were very help when I got in a pinch!

Completed
Stripped down to motor and frame
Front- 100/90-19 Avon Wide White Walls (cause I couldn't find the 110's)
Rear- 170/80-15 Avon Wide White Walls
Custom Lowering bracket (no shocks)
Powder coated rims Red
14" Apes (cause they didn't have 16" in)
Custom Seat
Ear Shaved
Aftermarket headlight & tail light
Flat Black Paint
Custom Exhaust with Wrap
New Turn Signals
kuryakyn 6180 Grips with helmet locks
Highway Brackets from ccspinner
Kuryakyn Longhorn Offset Dually Highway Pegs
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