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Author Topic: vintage 1990 Kx 125 owner says Hi !  (Read 5769 times)

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Offline levis

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vintage 1990 Kx 125 owner says Hi !
« on: October 17, 2013, 05:39:40 PM »
Hi there.

My name is Bart and I come from Poland.

Few months ago, I bought a 1990 Kx 125 lets say in a not good condition. Engine was running, but there was not much power. I took it, because visualy was not that bad, and gear box was working fine.

Now after I've added new sleeve and wossner piston, it runs good.

I have a problem, because I don't have power valves, but I will make another post about it.

Here are some pictures :-)




Anyway - Hi again ;-)
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Offline sandblaster

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Re: vintage 1990 Kx 125 owner says Hi !
« Reply #1 on: October 17, 2013, 06:22:35 PM »
Hi Bart.
Welcome to the site.
Looks like you are doing a good job.
When you post info about your exhaust valves, post what the 4 digit code is on your cylinder.
Sometimes the number is under the exhaust valve cover.
Since each year had a specific valve you want to be sure you get the right one the first time  :-)
Checking out the forks, in the USA they didn't use the blue uppers until 91.
I know that in Europe they often were a little ahead of us here..
Enjoy..
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline levis

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Re: vintage 1990 Kx 125 owner says Hi !
« Reply #2 on: October 17, 2013, 06:50:54 PM »
Hi Sandblaster :-)

Thanks for advices. You are right, forks are from 1990 or 1991 kx 250 (thats what previous owner told me).

As far as I know, I have a 1990 version, friend checked by VIN numer, and piston from this year was a perfect fit.

I've found out, that power valves are the same for 90 and 91.

Here are some bits which I need to buy:

12005-1145
12005-1153
13236-1250

Still have no idea, how does last part connects with governor shaft :-) and what makes power valves to set back to start position, when RPM goes down. I know, that governor shaft goes back, but how does this affects lever and vales I don't know yet :)


Here are some more pictures from my work :-)











« Last Edit: October 17, 2013, 07:00:11 PM by levis »
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Offline sandblaster

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Re: vintage 1990 Kx 125 owner says Hi !
« Reply #3 on: October 18, 2013, 03:15:42 AM »
Yep, 90-91 valves are the same.
Here is what your cylinder numbers should be:
1602 is from a 90 KX125
1645 is from a 91 KX125
I'm gone for the weekend so I'll let someone else handle your other questions.
Do you have a manual?
If not, better get one  :-)
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline levis

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Re: vintage 1990 Kx 125 owner says Hi !
« Reply #4 on: October 20, 2013, 11:42:05 PM »
I have manual ;-)

bad news are that, kawasaki don't produce my kips valves anymore, and they don't have them :(
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Offline sandblaster

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Re: vintage 1990 Kx 125 owner says Hi !
« Reply #5 on: October 21, 2013, 03:06:16 AM »
Keep watching eBay for the valves or a bad cylinder with the valves in them.
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The four stroke engine: That's one stroke for producing power and three for wearing the engine out.
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