Peacock Rebuild Kit - mysterious 'O' Ring?

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02 Dec 2011 17:56 #491143 by 750steve
Guys i've stripped my petcock & i can only find where 3 of the rubber rings/seals go but there were 4 supplied in the pack, i don't know if im supposed to have 1 extra but here are the ones i can find.

1/ One to seal when the petcock is screwed onto the tank
2/ One to seal when drain bowl of the petcock to the petcock main body
3/ One for the tap handle (the small ring on the handle itself when it is removed.

As for the 4th one i dunno!!

By the way, whats the best way to clean it? Baking Soda solution, vinegar solution or soak in Coca Cola?

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

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02 Dec 2011 18:18 #491144 by Patton
Replied by Patton on topic Peacock Rebuild Kit - mysterious 'O' Ring?

750steve wrote: Guys i've stripped my petcock & i can only find where 3 of the rubber rings/seals go but there were 4 supplied in the pack, i don't know if im supposed to have 1 extra but here are the ones i can find.

1/ One to seal when the petcock is screwed onto the tank
2/ One to seal when drain bowl of the petcock to the petcock main body
3/ One for the tap handle (the small ring on the handle itself when it is removed.

As for the 4th one i dunno!!

By the way, whats the best way to clean it? Baking Soda solution, vinegar solution or soak in Coca Cola?


Only three o'rings are used in the oem petcock at hand.

The kits are used for several different models, which might explain the 4th o'ring.

Be careful of using any strong cleaner on the conical shaped "plastic" area located at end of the lever handle, because it might risk damaging the "plastic" surface which is supposed to smoothly and snugly rotate inside the metal housing.

When the "plastic" cone gets scratched or otherwise damaged, the petcock will likely leak regardless of fitting a "repair kit."

I have been unsuccessful in attempting to "re-grind" the plastic cone to restore its fit inside the housing.

Good Fortune! :)

1973 Z1
KZ900 LTD

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02 Dec 2011 18:21 - 02 Dec 2011 18:21 #491147 by 650ed
Replied by 650ed on topic Peacock Rebuild Kit - mysterious 'O' Ring?
The Kawasaki.com drawing only shows the 3 (12,14,15) you mentioned. Ed

Attachment KZ750B2Petcock.jpg not found


1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Last edit: 02 Dec 2011 18:21 by 650ed.

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02 Dec 2011 18:28 #491149 by etbike3135
Replied by etbike3135 on topic Peacock Rebuild Kit - mysterious 'O' Ring?
The 4th one fits the Z1 petcock or 73/74

1973 Kawasaki Z1
18 years in dragbikes

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02 Dec 2011 18:38 #491152 by 750steve
Replied by 750steve on topic Peacock Rebuild Kit - mysterious 'O' Ring?
Thanks guys, that's a great help.

Patton, the plastic piece you mention hasn't been exposed to anything, it was removed & set aside, I tried the vinegar solution & then a baking soda solution, I'm not expecting miracles but they didnt show much noticeable difference. Now ALL parts are soaking in coca cola, apart from the filter. I appreciate the warning advice though

07 ZX6R Race Bike
1977 Z750 B2 Twin
1976 Z650 B1

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02 Dec 2011 21:05 #491169 by mumbles
Replied by mumbles on topic Peacock Rebuild Kit - mysterious 'O' Ring?
Good read on this post. I'm also having problems with a leaky petcock. Now if the mail would get here a little sooner with the repair kit. B)

2001 KZ1000 Police
1998 Vulcan 800

Houston, Tx

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