1981 GS550T Petcock

[Guest]

gentlemen,
I have searched and searched. for the life of me i cannot find an exploded view of the petcock for this bike. i just bought a new petcock anyways after reading the forums here, but im still going to rebuild the one i have as i have the rebuild kit. does anyone have a diagram? (yes, i took it apart, got distracted...and forgot how it goes back together!lol)
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[tom203]

"but im still going to rebuild the one i have as i have the rebuild kit"

if you're that bored, why not dismantle the new petcock to inspect it!
Seriously, rebuild kits have poor track record. Your new one will probably last 30 years.

[coxy822]

i cant argue that logic. i was just hoping someone had a schematic

[tom203]

Have a look here.....hopefully it will convince you to use that old petcock as xmas ornament

http://members.dslextreme.com/users/storagecliff1/images/suzuki_petcock_rebuild.pdf

[jdvorchak]

I've redone a couple of petcocks and the best advice I can give is disassemble the thing and put all of the metal parts into white vinegar to soak overnight. Then rinse with water and inspect the internals and finish cleaning with carb or brake cleaner. Put a new O-ring on the vacuum plunger and lube it with a very light coating of grease or oil. Replace the gasket (one with 5 holes in it) and put it all back together. Take care with the diaphragm. If you have a vacuum bleeder like a Miti-Vac or similar you can check function. One caution. Before you fill up the tank and go for a ride, put some fuel in the tank and let it sit and keep an eye on it looking for leaks. Even seeping is bad. When I'm testing one I put my miti-vac on it and put a fuel line into a container and make sure that it flows fuel in prime with no vacuum applied. Then make sure it won't even seep fuel in on or res. Then apply a few inches of vacuum and make sure it flows fuel with vacuum applied. Then look at the mity-vac gauge and make sure it's not bleeding down. If it passes all of that then you have a good chance of having a properly functioning petcock...

Long story short? Hang that one on the Christmas tree and use the new one on your bike.