KZ750 o-ring help

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KZ750 o-ring help

29 May 2019 18:14
#804819
So, the bike started puking fuel all over the floor a couple of days ago. I thought it was a bowl o-ring, turns out it was not. Seems it is the little O-rings on the connectors that provide the fuel between the carbs. Any idea where to get these? The carb part listings I have found don't have any pictures.

Thanks
Chuck

81 KZ750-H2 LTD
Chuck
81 KZ750 LTD
03 FZ1
www.oldjeep.com

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Re: KZ750 o-ring help

29 May 2019 18:46
#804821
That is for an e2, not h2. Are they same?
Chuck
81 KZ750 LTD
03 FZ1
www.oldjeep.com

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Re: KZ750 o-ring help

29 May 2019 19:04 - 30 May 2019 05:20
#804824
If you look up the part on Partzilla, information on what bikes the part fits comes up.

To answer your question though, yes, the E and H bike carbs are the same, so the O-rings will interchange.

And if you have an O-ring store in the area these are the various sized to rebuild the entire set of CV34 carbs...

Pilot Screw: 1.2 x 2.6
Pilot Plug: 1.5 x 2.8
Fuel Transfer Tubes: 2.0 x 5.5
Drain Screws: 1.4 x 4.0
Float Bowl: 2.0 x 67

BTW, industrial standard measurement method for O-rings is T (thickness) x ID (inside diameter), in this case measured in mm.
Last edit: 30 May 2019 05:20 by Nessism.
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Re: KZ750 o-ring help

30 May 2019 05:41
#804851
A metric nitrile o-ring kit may have the needed sizes or sizes that are close enough. I got a kit from Harbor-Freight & it has come in handy for the carburetors, fuel tank, forks & a couple of other things. There are also viton rubber o-ring kits, but I've never had a problem with the nitrile rubber o-rings.


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Re: KZ750 o-ring help

30 May 2019 05:43
#804852
I called the local dealer last night and they have them on the shelf, so I guess I'll be running over there again after work to pick up 6 of them and maybe a couple spares. On the plus side I'm getting pretty good at putting those airbox boots back on.
Chuck
81 KZ750 LTD
03 FZ1
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Re: KZ750 o-ring help

30 May 2019 18:20
#804908
martin_csr wrote: A metric nitrile o-ring kit may have the needed sizes or sizes that are close enough. I got a kit from Harbor-Freight & it has come in handy for the carburetors, fuel tank, forks & a couple of other things. There are also viton rubber o-ring kits, but I've never had a problem with the nitrile rubber o-rings.


....

Thanks for the tip. Dealer didn't actually have them so I stopped by Northern Tool and got a set of metric o rings
www.northerntool.com/shop/tools/product_200324966_200324966

They had a 2mm x 5mm, which I figured was close enough - hard to believe that a Chinese o ring is within .5mm or that nearly 40 years ago that Japanese o rings were either. They fit nice and tight and no more leaks. I ordered a set of the right size just in case but I think I'll be fine
Chuck
81 KZ750 LTD
03 FZ1
www.oldjeep.com

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