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Author Topic: 750 carb o-ring size  (Read 742 times)

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Offline BruceG

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750 carb o-ring size
« on: December 11, 2014, 12:32:05 PM »
I need to replace all 4 of my carb float bowl drain 'bolt' o-rings; two of them have split which could to a real mess.  I don't need to buy an entire carb rebuilt kit so I'm looking for the dimensions of the stock o-ring to see if I can find replacements.
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Offline goldarrow

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Re: 750 carb o-ring size
« Reply #1 on: December 11, 2014, 12:36:00 PM »
$6 orings kit in a box from harbor freight should do just fine
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Offline flybox1

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Re: 750 carb o-ring size
« Reply #2 on: December 11, 2014, 12:54:28 PM »
Quote from: goldarrow on December 11, 2014, 12:36:00 PM
$6 orings kit in a box from harbor freight should do just fine
+1
Buna or viton. both have good chem resistance, or you can take the screw and a bowl to your local auto store.  they typically have a large case of metric and SAE o-rings behind the counter, and can pull a few out to get a set that works.
« Last Edit: December 11, 2014, 01:05:02 PM by flybox1 »
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Offline 750cafe

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Re: 750 carb o-ring size
« Reply #3 on: December 11, 2014, 08:03:21 PM »
Quote from: goldarrow on December 11, 2014, 12:36:00 PM
$6 orings kit in a box from harbor freight should do just fine

Get BOTH the metric and SAE sets. They are both worth much more than their weight in gold.  ;)
Just the gasoline and one minute of your time to go to a store to hunt for one little part, costs more than both sets.

Eric
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Offline BruceG

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Re: 750 carb o-ring size
« Reply #4 on: December 12, 2014, 08:19:42 PM »
Since these o-rings contact gasoline, or what is now served up as such, it is better to get them in Viton.  The ethanol just eats up old rubber bits such as o-rings and especially fuel line.
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Offline BruceG

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Re: 750 carb o-ring size
« Reply #5 on: December 12, 2014, 08:24:36 PM »
And you can get them here: http://www.mcmaster.com/#o-rings/=uzzvhr.  Not sure that I need 25 of the same size, though!
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Offline goldarrow

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Re: 750 carb o-ring size
« Reply #6 on: December 12, 2014, 08:38:15 PM »
Don't over think it
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Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0
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