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Vacuum petcock lever leak problem........
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Author:  Peter 750 [ Sun Oct 06, 2013 6:38 am ]
Post subject:  Re: Vacuum petcock lever leak problem........

Correct me if I'm wrong, but the only reason for the original petcock to be operated by vacuum, is to prevent hydrolock of the engine..??
I'm fed up with leaking 4 hole gaskets, gas on the floor, creating dangerous situations in my garage etc.
I've replaced this 4 hole gaskets 2-3 times, used the sanding method, fuel resistant grease etc. etc., right now, I don't trust the existing petcock at all, don't move the lever no matter what...!
Btw, I use Dutch Shell V-Power fuel, which contains less than 2% ethanol.

Author:  Peter 750 [ Mon Oct 07, 2013 12:13 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

Peter 750 wrote:
http://www.ebay.nl/itm/161068023143?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Is this a good/safe option for the H2...??


Anyone.. :?:

Author:  Jim [ Mon Oct 07, 2013 12:55 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

Personally I use the stock vacuum petcock and it works fine. If I had to change to something else, I think I'd use a high quality valve like a Swagelok 3-way and adapt it. I've never heard of an aftermarket petcock that is trouble free.

Author:  Peter 750 [ Mon Oct 07, 2013 3:32 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

The Ebayer, Z-1 parts inc. in California, claims he is selling a lot of these petcocks to H1 and H2 owners...??

Author:  Peter 750 [ Tue Oct 08, 2013 11:59 am ]
Post subject:  Re: Vacuum petcock lever leak problem........

I ordered one today....

Author:  mraxl [ Tue Oct 08, 2013 12:13 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

I'd suggest you check fuel flow after installation. Some folks have reported good results with aftermarket petcock while others have experiences holed pistons from lack of flow thru one port.
Don't forget to cap the vacuum port on the carb and turn off the petcock after ride.

Author:  Peter 750 [ Tue Oct 08, 2013 12:32 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

mraxl wrote:
I'd suggest you check fuel flow after installation.


What's the right way to do this..??

Author:  mraxl [ Tue Oct 08, 2013 3:55 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

viewtopic.php?f=14&t=6314&hilit=petcock+video&start=0

Author:  Peter 750 [ Tue Oct 08, 2013 4:10 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

Thanks for the info.
The Z-1 Parts petcock looks different, though.
I already bought a few original new small o-rings for the vacuum petcock, probably makes it better, but the mean reason for another design petcock is the fact that the 4 hole gasket dissolves in modern fuel.
The Z-1 parts petcock doesn't have this infamous 4 hole gasket.

Author:  Jim [ Tue Oct 08, 2013 4:29 pm ]
Post subject:  Re: Vacuum petcock lever leak problem........

I got an Kawasaki 4-hole gasket from Jessbikes and it's been working for about four years now. It's also the same as the one that some Suzukis use, like the GT550 and GT750 if I remember right. Maybe the problem is reproduction gaskets made of the wrong material. Just guessing.

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