New Member Area New to CBRForum? Stop in and introduce yourself.

1996 CBR 900RR Petcock leaking help PLEASE

Thread Tools
 
Search this Thread
 
Old Jun 26, 2025 | 05:38 PM
  #1  
Abadadad's Avatar
Thread Starter
|
Junior Member
Joined: Apr 2020
Posts: 2
Likes: 1
Default 1996 CBR 900RR Petcock leaking help PLEASE

Hi guys new to the forum trying to get my guy back on the road & could really do with some assistance.
Apologies if this has already been asked & answered.
Bikes been garaged for a good few yrs, carbs have been cleaned, full service etc etc.
would not idle without choke.
Petcock developed a leak replaced with a pattern one would not run right .on checking the original one seals were gone, bought a seal kit replaced the diaphragm seals etc...its now developed a leak on the other side.



That side is/was riveted, rivets have been removed & seal inside is rock hard.. failed!
My long winded question is can anyone point me in the right direction for the seal? I've included some photos (hopefully makes sense ) and any help would be seriously appreciated many many thanks 😊
Ps does anyone know the best thing to clean old fuel petcock with that wont damage the seals cheers ?🍻
 
Reply
Old Jun 29, 2025 | 08:40 AM
  #2  
rockpool's Avatar
Senior Member
Joined: Apr 2015
Posts: 708
Likes: 187
From: Connecticut / Florida
Default

Unless you can scavage that oring from your pattern part, you're out of luck - either buy another pattern unit (count your blessings they exist - they don't for a CBR1000F!) or you could try fitting a standard round o-ring into the groove - don't forget you can cut and join an oring with superglue and it will work fine.

As for seal-safe solvents, the o-rings are probably butile or nitrile, which means anything stronger than gasoline (including ethonol) is going to destroy them. Throw it in a hot bath ultrasonic cleaner with some simple green for an hour or so...
 
Reply
Old Jun 29, 2025 | 02:11 PM
  #3  
Abadadad's Avatar
Thread Starter
|
Junior Member
Joined: Apr 2020
Posts: 2
Likes: 1
Default 1996 CBR 900RR Petcock leaking help PLEASE

Thanks rockpool top suggestion re cutting & gluing rubber washer I think that might work. Got new tiny nuts bolts & washers ystday that'll be my new task for tomorrow. Want to keep the original tap
1 it's original
2 the garage it just came back from are suggestng fuel starvation as the reason for rough running ( with the pattern petcock)
Hopefully they are right .
I'll keep you posted thank you 😊
 
Reply
Old Oct 7, 2025 | 06:49 AM
  #4  
Oldrider78's Avatar
Junior Member
Joined: Sep 2025
Posts: 3
Likes: 0
Default

Originally Posted by rockpool
Unless you can scavage that oring from your pattern part, you're out of luck - either buy another pattern unit (count your blessings they exist - they don't for a CBR1000F!) or you could try fitting a standard round o-ring into the groove - don't forget you can cut and join an oring with superglue and it will work fine.

As for seal-safe solvents, the o-rings are probably butile or nitrile, which means anything stronger than gasoline (including ethonol) is going to destroy them. Throw it in a hot bath ultrasonic cleaner with some simple green for an hour or so...
Assuming that you have a CBR1000F, did you make an o-ring to resolve your leak? Thanks for the heads up!
 
Reply
Old Oct 10, 2025 | 06:07 PM
  #5  
rockpool's Avatar
Senior Member
Joined: Apr 2015
Posts: 708
Likes: 187
From: Connecticut / Florida
Default

For the petcock? No, I measured and replaced them after drilling out the rivets and separating the sides of the petcock.

https://cbrforum.com/forum/how-tos-8...-parts-163456/
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trabbart
The Hurricane Saloon
3
Aug 21, 2020 12:37 PM
Migge
F2 Tech
8
Oct 12, 2015 02:02 PM
SmokinjoeDoty
F2 Tech
2
Mar 21, 2015 04:00 AM
superjuicebox2
CBR 600F3
7
Jul 16, 2012 01:20 AM
Dally CBR
General Tech
0
Oct 11, 2010 06:25 PM




All times are GMT -5. The time now is 05:23 AM.