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Author Topic: 77 KZ650 B1 Petcock alternative  (Read 205 times)

Offline JSJamboree

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77 KZ650 B1 Petcock alternative
« on: Oct 26, 2017, 18:03:51 »
Anyone have an idea on a alternative for the KZ650 B1 petcock (right petcock in the picture)? It was a 1 year only petcock, and it cant be rebuilt since its just a worm that turns vs the 4 holes like every other petcock.  They are impossible to find, so im needing something else to fit.  Thinking that I could get one off of a B2 (left one in the picture) which is vacuum operated, cut out the diaphragm and then cap the vacuum port as it would then spew fuel.  Before trying that, hoping maybe someone else has another petcock that would work or I should look into getting.



Offline patricke9

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Re: 77 KZ650 B1 Petcock alternative
« Reply #2 on: Oct 26, 2017, 19:47:40 »
I have been using this one for a couple of years now with no problem:

http://www.dotheton.com/forum/index.php?topic=74660.msg886761#msg886761

Patrick
1978 Kawasaki KZ650 B2
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Offline JSJamboree

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Re: 77 KZ650 B1 Petcock alternative
« Reply #3 on: Oct 27, 2017, 10:38:22 »
I have been using this one for a couple of years now with no problem:

http://www.dotheton.com/forum/index.php?topic=74660.msg886761#msg886761

Patrick

So that one looks to be 44mm (center to center) hole spacing, I havent taken it off to measure but looks like you have a B model.  The SpeedMotoCo sight just doesn't list that model.  The xs650 petcock looks to have 42.5mm (apart) spacing and the xs400 has 34mm (unknown) spacing.

So the XS650 if its inside to inside might actually be 44mm center to center.  I guess I just need to take mine off and measure it. 

Offline patricke9

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Re: 77 KZ650 B1 Petcock alternative
« Reply #4 on: Oct 27, 2017, 11:05:37 »
Pretty sure all KZ650's have the petcock with the 44mm bolt holes.  If yours is different, they do make alternate adapter plates as well.

Patrick
1978 Kawasaki KZ650 B2
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