KZR's Bikes of the Month for 2024

'76 KZ400 Petcock Problems

More
30 Mar 2006 18:09 #35574 by KitNYC
'76 KZ400 Petcock Problems was created by KitNYC
Got a lot of work done on the little KZ yesterday: took it from running to non-running with a brief stop at running better. :P

I'll ask about my charging problems in electrical, but the biggest problem I ran into yesterday was fuel flow. (Actually, the lack of fuel flow. :P )

It was backfiring, then stalling when I tried to rev. I looked at the petcock today & discovered that the rubber inside is in bad shape.

I have o-rings, but what I need is the 4-hole rubber thingy, er, gasket, that goes between the tap handle & the body of the petcock. (P/N 92065-099) Jeff can get 'em, but it'll take a week or more. Ron Ayers has 'em, but it takes them a week to get anything from their warehouse to the shipper, plus I refuse to pay $8 to ship a tenth of an ounce of rubber. :blink: Local dealers don't have 'em either, & eBay's out of stock.

So, I can get one, but not quickly. I want it now, so I'm thinking about making one. I can use the old one for a pattern, but I don't know what to make it out of. I have some old bicycle tubes around, but I'm not sure they're fuel resistant. ;) Anybody got any suggestions, or should I just suck it up & ask Jeff to order me one?

Thanks,
-Kit

Please Log in or Create an account to join the conversation.

  • wireman
  • Visitor
30 Mar 2006 19:11 #35591 by wireman
Replied by wireman on topic '76 KZ400 Petcock Problems
ill stick extra gas tank in box with other stuff going out to ya,give me a few days.;) goodluck,happy wrenching!

Please Log in or Create an account to join the conversation.

More
31 Mar 2006 09:21 #35739 by georgeha
Replied by georgeha on topic '76 KZ400 Petcock Problems
Kit,

It's made of an unusually thick gasket material, the local auto parts store might have something, but I don't know. I know I bought a pack of gasket material and it was all too thin.

I had a bud get mine redone at a marine engine repair shop, I imagine any engine rebuilding place could do it, though they'd probably charge.

George

Please Log in or Create an account to join the conversation.

More
31 Mar 2006 09:35 #35743 by KitNYC
Replied by KitNYC on topic '76 KZ400 Petcock Problems
Thanks again for the care package!!! :) :) :)

For this problem, though, I wonder if it's not mostly about the age of the rubber? I'm still curious as to where to get the right kind of rubber to fabricate one of these...

-Kit

Please Log in or Create an account to join the conversation.

More
31 Mar 2006 09:36 #35745 by KitNYC
Replied by KitNYC on topic '76 KZ400 Petcock Problems
Thanks, George. I'll look at engine rebuilders, there must be a few around here.

Cheers,
-Kit

Please Log in or Create an account to join the conversation.

More
31 Mar 2006 13:16 #35774 by KitNYC
Replied by KitNYC on topic '76 KZ400 Petcock Problems
Duh. :P

Thanks again, Wireman! I just found the petcock at the bottom of box #1.

-Kit

Please Log in or Create an account to join the conversation.

More
31 Mar 2006 17:03 #35809 by KitNYC
Replied by KitNYC on topic '76 KZ400 Petcock Problems
The petcock Wireman sent me is a little different from the one on my tank, & the gasket wouldn't quite fit. However, I have fixed my problem, at least for a while: I flipped the gasket over so the unworn side faces out. Turning the tap no longer pulls chunks of rubber off of it, & it doesn't seem to drip either. (Now that it's back together. :P Somebody want to remind me why I put more fuel in before replacing that gasket?)

Cheers,
-Kit

Please Log in or Create an account to join the conversation.

More
15 Jun 2006 16:32 #54743 by kzdaffid
Replied by kzdaffid on topic '76 KZ400 Petcock Problems
I've got a '76 D3, and I've had the same problem with the petcock...I've got mine jury-rigged at the moment with some 1/4" cork...and I DO mean jury-rigged...the 1/4" wasn't quite thick enough, so in order to get close the the roughly 3/16" that I need I made two copies of the rubber one, and sliced one in half, and put it in back. I have some rubber on order and I'm going to try and make several replacements...As soon as thats done, I plan on offering a few of 'em up and see how they work. I'll keep everyone posted.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.