Z1 Enterprises Suzuki petcock

[jeff.saunders]

BMT (and others) - One piece of information for you - your petcock may be working as designed. I don't have a factory manual for your bike, but in the GS1100 factory service manual, there is a note about not turning the petcock to prime and back.

When the engine is not running and the valve in the on position, the fuel valve is kept in the closed position by applying pressure utilizing a spring so no fuel will flow to the carburetors.
When the engine is engaged, a negative pressure is generated in the diaphragm chamber "C" through the vacuum (negative pressure) pipe which is connected to the carburetors, and builds up a negative pressure which is higher than the spring pressure so the diaphragm is forced to open the fuel valve and thus allow the fuel to flow to the carburetors.
On the other hand, setting the valve in the ON position keeps the air return orifice open.
Negative pressure does not accumulate on the diaphragm at the time the engine is stopping, and then the spring pressure actuates the diaphragm to move back into its original position and closes the fuel valve.
However, setting the valve in PRI position causes the air return orifice to close, resulting in negative pressure in the chamber "C" under the diaphragm. This negative pressure doesn't allow the fuel valve to close and therefore fuel keeps flowing to the carburetors.

This suggests you must have the engine cranking to create a vacuum to reset the petcock.

[jeff.saunders]

49er - Vesrah... I was talking to a rep from one of our suppliers that buys from a manufacturer in Taiwan. They were surprised to see Vesrah packaging on some of the products going out the door. That same rep was talking to Vesrah a few months later and just commented on them using this supplier in Taiwan. At which point the Vesrah sales guy went into a panic mode and immediately called their bosses back in Japan...

I've not seen anything in the press about this, but my understanding was a distributor of Vesrah products thought they could source them cheaper from Taiwan...

As a footnote to piracy versus deceit, many of the products coming out of Japan with a 'Made in Japan' label on the box are not made in Japan. We used to buy some product from a distributor in Japan - their packaging all had the 'Made in Japan' labels - however, we found their source for some of the products was in Taiwan

[johnchambers]

Looking for valve shims 2.60 and 2.70 four of each 2.95 mm

[GSXR7ED]

I've never had issues with Z1....


Ed

[CrazyCloud]

Z1 Back Online

Just checked the site and Z1 seems to be back online! Haven't tried to order yet but site is back up.

[tkent02]

Been trying to order from Z1 for over a week and keep getting blown off. Phone calls, emails, the website, none of it does any good.
Guess what? I went somewhere else.

[jeff.saunders]

So the parts we have on special order for you no longer want?

The web site works well. There are no reported issues with our web site. However, you cannot order special order parts through the web site.

I responded to you a couple of times, so you may want to check your spam filters.

[jeff.saunders]

Tom, I found a bounced email from Gmail.

Your message addressed to the target domain (gmail.com) could not be delivered because the mail server responsible for this domain returned a permanent error.

[GSXR7ED]

When I've ordered with Z1, it's been with a phone call because it was more personable and encouraged mutual interest in parts needed. I found the representative to be very helpful and patient with me...lots of brownie points when it comes to repeat ordering.

Of course, it's been a while since I ordered anything for my parked bike.

Ed

[tkent02]

Jeff, PM coming....

[bwringer]

Seven years? This thread has got to set some sort of forum gravedigging record.