79' GS1000 petcock?

[GS1000S]

The petcock on my newly acquired bike is leaking and either needs to be repaired or replaced. In searching it appears that the K and L rebuild kits aren't very reliable in solving the problem. NOS OEM is almost $400 so it's out of the question. I think I read somewhere that an OEM petcock from a 1977 GS750 would fit for under $100, with some minor hose rerouting, is this correct? Any other options would be appreciated.



thanks, Pat

[fixmybrokecomputer]

Partzilla has one for $269.42

https://www.partzilla.com/product/suzuki/44300-44011?ref=265426f267442f12d224e8995cd78002f4409862

[alke46]

You have a couple of options. I had the same issue and I converted mine to a manual shut off type. Look up a thread on this by tkent02. Second option is to look up Chuck Hahn's tutorial on making the 750 petcock work. Another option would be to go with a Pingle brand petcock which would also be a manual shut off type if memory serves me right.
Good luck.

[Big T]

You are correct and on the 750 petcock

[superawesome]

Why not try first to fix yours? I got mine (1978 GS1000) working with a Tourmax rebuild kit (see thread here), but I would start with ordering the 2 OEM parts that are still available, and trying to replace those first (the 5-hole gasket and the front seal).
There is a nice write up on BikeCliffs site here (as usual).
In my case, the rubber parts were shrunk (through age I guess), and replacing them got me a fully functional vacuum petcock.

[Nessism]

That petcock is functionally similar to the one on my KZ750 and I was able to successfully rebuild it without issue. Main thing though is that Kawasaki still sells the parts. It's good to hear that the Tourmax rebuild kit works but many times aftermarket petcock parts don't fit.

[Grimly]

Why not try first to fix yours? I got mine (1978 GS1000) working with a Tourmax rebuild kit (see thread here), but I would start with ordering the 2 OEM parts that are still available, and trying to replace those first (the 5-hole gasket and the front seal).
There is a nice write up on BikeCliffs site here (as usual).
In my case, the rubber parts were shrunk (through age I guess), and replacing them got me a fully functional vacuum petcock.

Same here - the NOS (they might not be all that old) Suzuki rubber parts still available did the job for me, but I had to re-face the turning portion where it contacts the rubber, as some irregularities had set in over the years (light corrosion) with some 1000 grade wet'n dry. That was one of the two and it's still working fine, so I'm happy to risk rebuilding the second one soon enough. The other weak spot is the fuel outlet pipe loses its grip on reality and comes loose from the tap body, but nearly 40 years of grip until now has been good enough. I'll set both of them back in place with some epoxy snail snot.