Fuel petcock

[Tx Bohemian]

Seems to me there was a "petcock" improvement or replacement information on here a few years ago. I can't seem to find it.
(I've been away from this site for a year or two)

Anyone remember or can point me in the direction to find it?

I seem to have "missing gas" when the bike sits for a length of time (3-4 weeks).
Every once in a while, either when I'm on a trip or just sitting in the shop, I get a whoof of gas smell!

It's a '99 Standard, so it's 27 yrs old and I'm sure the fuel and vent lines never been replaced so I'm about to tackle that here shortly along with the petcock.

[h13man]

This setup works with stock petcock assembly but its a manual shut off. Just need to remember to shut it off all the time. This won't alleviate leaky float valves but won't allow fuel to flow because of a bad auto petcock failure. I'm using a Pingel manual petcock.

https://www.partzilla.com/catalog/honda/motorcycle/1996/cbr600f3-a-super-sport/fuel-tank

Part #5 as listed.

[Sixgunluvr]

Many here recommend the refurbishing kit if wanting to stay original, you can just search eBay or elsewhere for Valkyrie petcock refurbish kit.     

   The kit, however, does not include the parts from the other side of the petcock such as O-rings and gasket, there is also a ball bearing on that side, not to mention that you cannot open it from that side without drilling out the rivets and tapping for new screws. I did not want to do that so I bought an OEM petcock complete with new fuel screen. I know it is the diaphragm that usually goes bad on the side you were able to refurbish, however, if your petcock is really bad and gummed up is also gonna be gummed up on the other side.  I just removed my tank and checked my petcock with now 10,300 miles on the bike and it looked fine. So I just changed the fuel filter and saved the new OEM entire petcock for down the road at some point.

[Tx Bohemian]

Thanks fellas,
I like the idea of replacing the complete petcock. This thing is 27 yrs old ('99) and probably never had the hoses/vacuum lines replaced. So I'm fixin to tear into it and replacing all that along with the petcock.
That will include the dreaded "airbox removal and reinstall"!!!!
Definitely not looking forward to that!!!

I'm fighting a "missing gas" issue.  The oil level is consistent, so I don't think it's leaking through the carbs into the crankcase.

[WintrSol]

The missing gas could be because the petcock has been loosened before, and the O-ring seal is hardened, thus weeping a tiny bit, which adds up over time. But, any smell of fuel from there would likely be overwhelmed by the tank vent.

Get a container of red grease (safe for almost all 'rubber'); a thin film on the rubber boots will help them slide into place. Help, but not make it easy.

[Tx Bohemian]

The missing gas could be because the petcock has been loosened before, and the O-ring seal is hardened, thus weeping a tiny bit, which adds up over time. But, any smell of fuel from there would likely be overwhelmed by the tank vent.

Get a container of red grease (safe for almost all 'rubber'); a thin film on the rubber boots will help them slide into place. Help, but not make it easy.

Thanks WintrSol,
That does sound like where my gas is going.
This thing sits for weeks (embarrassed to say, months sometime ) between rides! The oil is right at the full line where it's been since I changed it 1500 miles ago.