Need help to identify petcock Kz900A4 1976

Hi guys,

My vacuum operated petcock on the Kz900A4 is dripping fuel when the engine is off, from the main fuel outlets, which makes the carbs overflow or even gas into the oil.

I´m trying to find a repair kit for the petcock, but cannot find a reference. All part providers list my petcock as gravity, but mine is vacuum. 

Here are some pictures. 2 fuel outlets and one vacuum inlet. ON-RES-PRI positions.

Can someone show me the way here? Perhaps this petcock is used in some other model that I can find a repair kit for? 

Thanks a ton in advance.

C.

 

1976 A4-900 did not use that tank. Looks like you might have a late ‘77 to ‘78 Kz1000 A tank. Try here

www.partzilla.com/catalog/kawasaki/motor...l-tank-kz1000-a2-a2a

That's a 1978 kz1000 tank and petcock, 76 a4 would be a manual big nut type.

Thank you. My bike has "strange" things going on... like a rear disc, the trapezoidal brake pump, etc... 

The problem with rebuilding petcocks is finding the proper parts.  Kawasaki has discontinued many of the required diaphragm, seals, and O-rings, in order to do a proper job.  And aftermarket petcock rebuild kits are typically JUNK.   Unless OEM parts can be located, you would be better off sourcing a new petcock.  Measure hole to hole size, make note of nipple orientation and clearance requirements on the bike, then go hunting places like Z1 and ebay.  

Thank you. I totally agree with you. I am trying to find which other bikes use the same petcock, so I can get a new petcock. So far, I have not been able to find any 

Here is a pic of a single feed Pingel petcock just installed on my 1976 KZ900.  A lot of riders and restorers of these classic bikes are recommending using a high quality petcock (like a Pingel)
to replace an OE type such as yours.  

Another member rstnick, suggested a Suzuki if the spacing is 44mm for Z1 Enterprise 

www.kzrider.com/forum/11-projects/610573...1-kz750-e?start=1092