KZ650 B - something wrong with the petcock?
- TheHolk
-
Topic Author
- Offline
- User
-

Registered
- Posts: 16
- Thanks: 1
KZ650 B - something wrong with the petcock?
07 Apr 2010 18:21
Hi,
I'm trying to rebuild a '78 KZ650 and I need some help with the petcock. Simply don't know whether this thing is broken or whether this is supposed to be like that. Looks like there is an o-ring missing, but I still can't imagine that this is not leaking...
Thanks for your help!
I'm trying to rebuild a '78 KZ650 and I need some help with the petcock. Simply don't know whether this thing is broken or whether this is supposed to be like that. Looks like there is an o-ring missing, but I still can't imagine that this is not leaking...
Thanks for your help!
1978 KZ650
2009 Ducati Hypermotard
1981 Vespa P200E
2009 Ducati Hypermotard
1981 Vespa P200E
Please Log in or Create an account to join the conversation.
- TexasKZ
-
- Offline
- Platinum Member
-

Registered
- Posts: 8124
- Thanks: 2639
Re: KZ650 B - something wrong with the petcock?
07 Apr 2010 18:41
I've not had a KZ650, but on the bikes I have done this to, I just roughed up the tube with some coarse sandpaper and pressed the tube back into the petcock. No runs, drips or errors.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24
Please Log in or Create an account to join the conversation.
- rstnick
-
- Offline
- Premium Member
-

Registered
- Posts: 4587
- Thanks: 511
Re: KZ650 B - something wrong with the petcock?
07 Apr 2010 18:44
I've had one come apart on my 650.
No o-ring there, just a pressed fit.
I used a bit of JB Weld on it to keep it together.
Others have used other adhesives that I can't recall.
Whatever you do, only use a bit and put it where it won't get squeezed into the petcock.
No o-ring there, just a pressed fit.
I used a bit of JB Weld on it to keep it together.
Others have used other adhesives that I can't recall.
Whatever you do, only use a bit and put it where it won't get squeezed into the petcock.
Rob
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
1978 KZ1000 project
1983 KZ1000R2 Project
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
1978 KZ1000 project
1983 KZ1000R2 Project
Please Log in or Create an account to join the conversation.
- rstnick
-
- Offline
- Premium Member
-

Registered
- Posts: 4587
- Thanks: 511
Re: KZ650 B - something wrong with the petcock?
07 Apr 2010 18:45
Oh and welcome.
Post up some pictures of the whole bike too.
Post up some pictures of the whole bike too.
Rob
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
1978 KZ1000 project
1983 KZ1000R2 Project
CANADA
Need a key for your Kawasaki? PM me
1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s
1978 KZ1000 project
1983 KZ1000R2 Project
Please Log in or Create an account to join the conversation.
- JMKZHI
-
- Offline
- Platinum Member
-

Registered
- Posts: 2428
- Thanks: 48
Re: KZ650 B - something wrong with the petcock?
07 Apr 2010 19:29 - 07 Apr 2010 19:29
A brass nipple came out of my fuel tap, so I reinstalled it w some LiquidSolder from the auto parts store - it comes in a tube w no mixing. I simply put a tad on the outside of the nipple & pressed it back into the hole.
Last edit: 07 Apr 2010 19:29 by JMKZHI.
Please Log in or Create an account to join the conversation.
- Bluemeanie
-
- Offline
- User
-

Registered
- Posts: 2516
- Thanks: 15
Re: KZ650 B - something wrong with the petcock?
07 Apr 2010 19:54
All the above work great but R4 turned me on to this. I tapped (1/8" pipe thread I believe) out petcock and installed a 1/4" elbow. Installed with yellow (fuel resistant) teflon tape and has worked great for past 3-4 years.
1980 KZ650F1, Bought new out the door for $2,162.98!
Please Log in or Create an account to join the conversation.
- fixer5000
-
- Offline
- User
-

Registered
- Posts: 415
- Thanks: 5
Re: KZ650 B - something wrong with the petcock?
08 Apr 2010 14:09
i used loctite ... its still on there after about 8 years
1978 kz650b pretty much stock
\\\\\\\" get there fast but arrive alive \\\\\\\"
massachusetts
\\\\\\\" get there fast but arrive alive \\\\\\\"
massachusetts
Please Log in or Create an account to join the conversation.
- TheHolk
-
Topic Author
- Offline
- User
-

Registered
- Posts: 16
- Thanks: 1
Re: KZ650 B - something wrong with the petcock?
08 Apr 2010 18:19 - 08 Apr 2010 18:21
Thanks - that helps a lot!
This is the bike. A lot of work, but that's why I bought it. Think I'll need your help again in the next couple of months.
Not sure what I'm going to do with it. I plan to put it on the road first and then modify it.
This is the bike. A lot of work, but that's why I bought it. Think I'll need your help again in the next couple of months.
1978 KZ650
2009 Ducati Hypermotard
1981 Vespa P200E
2009 Ducati Hypermotard
1981 Vespa P200E
Last edit: 08 Apr 2010 18:21 by TheHolk. Reason: wrong pic
Please Log in or Create an account to join the conversation.
- TheHolk
-
Topic Author
- Offline
- User
-

Registered
- Posts: 16
- Thanks: 1
Re: KZ650 B - something wrong with the petcock?
08 Apr 2010 18:26
1978 KZ650
2009 Ducati Hypermotard
1981 Vespa P200E
2009 Ducati Hypermotard
1981 Vespa P200E
Please Log in or Create an account to join the conversation.
- sft1662
-
- Offline
- User
-

Registered
- Posts: 130
- Thanks: 0
Re: KZ650 B - something wrong with the petcock?
08 Apr 2010 22:07
Looks good, I like it 
Petcock is the same way on my '78 B2A. It doesnt leak but it worried me how loose it is. I'm glad other people had the same issue. I'm new here, but welcome all the same.
Petcock is the same way on my '78 B2A. It doesnt leak but it worried me how loose it is. I'm glad other people had the same issue. I'm new here, but welcome all the same.
1978 KZ650 B2A
Please Log in or Create an account to join the conversation.
Moderators: Street Fighter LTD
