Part question / petcock fitment

[steves]

Would this petcock

http://cgi.ebay.com/ebaymotors/1980-GS550-GS750-GS850-GS1000-GS1100-PETCOCK_W0QQcmdZViewItemQQcategoryZ35597QQihZ008QQitemZ180057343467QQrdZ1QQsspagenameZWDVW

Be a suitable replacement on a 1981 GS1100E? I'd rather not pay $50 to find out if I don't have to.

[Billy Ricks]

Cross reference here, http://www.bikebandit.com/partsbandit/default.aspx .

Or here, http://www.alpha-sports.com/suzuki_parts.htm .

[Rocketman]

Don't even waste your time guessing. I just received a brand spanking new one in the original NOS Suzuki box from Flat Out for about 40 bucks. Don't make the same mistake I did and order the o-ring gasket. It already comes with one.

[Guest]

I bought that same one. I've been running it for about two years and it works great. It's a K&L brand. Georgefix is a really great seller also.
It also came with the o-ring.You have an 80 slot (no lever) petcock on your 81?

[steves]

I have a new o-ring, however the fuel cock I have now isn't flowing fuel on prime, and that is after a rebuild kit. I'm not sure which I need?

[Billy Ricks]

If yours is anything like my stocker there is a flat rod with about 1/2 loop of spring built into its base. That rod pushes on the diaphram when the petcock is on prime allowing fuel to flow. You probably need to lengthen that piece to get fuel to flow on prime.

[steves]

If yours is anything like my stocker there is a flat rod with about 1/2 loop of spring built into its base. That rod pushes on the diaphram when the petcock is on prime allowing fuel to flow. You probably need to lengthen that piece to get fuel to flow on prime.

Ah, okay. So any tips on doing that?

[Guest]

Do you have a lever that you twist to go from reserve, run and prime? Or do you have a small slot for a screwdriver to go from run to prime? If you have the slot you still need vacuum to activate prime, but you don't need constant vacuum like run.

[steves]

There is a lever, no slot.

[Guest]

This is the one you need.

http://cgi.ebay.com/ebaymotors/SUZUKI-GS450-GS650-GS750-GS1100-GS1150-PETCOCK_W0QQitemZ180049584326QQihZ008QQcategoryZ35597QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

[Billy Ricks]

Ah, okay. So any tips on doing that?

You have to disassemble the petcock to get to the piece. It's just outboard of the diaphram. Simply pull straight out on it and the spring portion of the part will allow it to become longer.

[steves]

This is the one you need.

http://cgi.ebay.com/ebaymotors/SUZUK...QQcmdZViewItem

Thank you.