Fuel Petcock -GSX-400 S

[Canv]

The fuel petcock on our 400 has failed again. This time I want to source one.
Anyone have experience either in the dis assembly of the cock itself or in finding new ones?

[tom203]

The fuel petcock on our 400 has failed again. This time I want to source one.
Anyone have experience either in the dis assembly of the cock itself or in finding new ones?

Rebuilding these is iffy- best to replace. You need to know mounting bolt centerline spacing ( 44mm, 46mm or 50mm??? ) ; lots of vendors have them.

[Guest]

If it'll fit, the one off the 80 - 82 450E/S tanks are less than $80 new from Boulevard Suzuki. I might still have my old buggered one down there somewhere I could measure holes etc. for you.

Otherwise www.cmsnl.com may have the parts fiche for the GSX400's to let you get the part number of the correct one.

[Canv]

Fuel Petcock issues

After reading the many threads on this it seems that the petcocks were extremely unreliable.
I am considering using a non-vacuum based petcock and placing a plug on the vacuum take off line on the carb's. That way I won't be reliant on a diaphragm shutting off the flow, I will do it as I do on my dirt bike.

[Canv]

Fuel Petcock size

Yes the manifold width hole to hole is 44mm.
Old part number is 44300-44172. $85.00 just to fail again.

[tom203]

Yes the manifold width hole to hole is 44mm.
Old part number is 44300-44172. $85.00 just to fail again.

Have some faith- some of these critters are still working after 30 plus years. 44 mm centerline spacing is same as mine- I just replaced my original from a Florida guy- $45 delivered- it will last longer than me!