replacement fuel petcocks and float height?

KC Gager kc at
Sat Feb 14 10:58:28 PST 2009

I'm not sure plastic is the best option and the o ring I think will be gas
happy. That is it will swell in size when gas hits it.

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-----Original Message-----
From: sv650-bounces at [mailto:sv650-bounces at] On
Behalf Of matthew patton
Sent: Saturday, February 14, 2009 10:36 AM
To: sv650 at
Subject: replacement fuel petcocks and float height?

when setting float height to say 7mm (is that what you guys use?) I set it
with the carb slightly tipped and the float tang just resting on the springy
plunger that's on the needle. That's always the way I've done it in the past
but for whatever reason the needle valve (on the front carb at least) is not
capable of countering the atmospheric pressure of the gas in the tank. So
since my fuel setup lacks both vacuum actuated cutoff's, my gas eventually
ends up in the crank case.

I used to use a Pingel on my GS500 race bike. But the SV's layout doesn't
look particularly conducive to that route. Is there a compatible model?

So I'm planning to use a manual shutoff petcock (McMaster Carr #4503K23).
Any other recommendations?


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