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KX Riders
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KX250 / KX125
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exhaust valve main rod
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Topic: exhaust valve main rod (Read 2702 times)
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mustangfury
Full Member
Posts: 143
exhaust valve main rod
«
on:
May 17, 2010, 11:44:10 AM »
Hi on my 93 k125 i have oil coming out through the main rod that sticks out the side of the cylinder from the exhaust valve assembly. I know it must be the seal or the o ring on the valve guide. What i call the valve guide is the guide on the main rod that is held in by the little screw head that overlaps its edge.
Here is a schematic. Valve guide: #49002. Seal: #92049.
http://www.petescycle.com/fiche_section_detail.asp?section=380051&category=Motorcycles&make=KAWASAKI&year=1993&fveh=8784
Now, my question is, should the valve guide that the o ring sits on be in there really tight or should it be loose. Mine is loose. If you pull the shaft, you can see it wobbling. I am going to get a new seal, does the guide need replacing too or is that normal?
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1993 KX 125
Coop
Full Member
Posts: 107
Re: exhaust valve main rod
«
Reply #1 on:
May 18, 2010, 12:46:00 AM »
I always replace the o-ring and seal on the power valve anytime I service the top end. They go bad.
That guide should be tight, you should have to give it a good push to get it to go in and seat (the o-ring causes the tight seal).
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"Twenty years from now, you will be more disappointed by the things that you didn't do than by the ones you did do"- Mark Twain
1997 CR80RB, 1993 KX60, 1988 KX125
mustangfury
Full Member
Posts: 143
Re: exhaust valve main rod
«
Reply #2 on:
May 18, 2010, 01:12:45 AM »
so does it just need a new o-ring and new seal you think?
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1993 KX 125
Coop
Full Member
Posts: 107
Re: exhaust valve main rod
«
Reply #3 on:
May 18, 2010, 01:32:13 AM »
I think so, yes. Two stroke oil gets on those PV parts from the cylinder and the o-ring and seal are there to keep it on the inside and not leaking out all over the cylinder.
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"Twenty years from now, you will be more disappointed by the things that you didn't do than by the ones you did do"- Mark Twain
1997 CR80RB, 1993 KX60, 1988 KX125
mustangfury
Full Member
Posts: 143
Re: exhaust valve main rod
«
Reply #4 on:
May 18, 2010, 02:34:48 AM »
yeah, mine has been leaking out all over the cylinder for a while now. I'll try just replacing the o ring and seal and see what happens.
thanks for the help.
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1993 KX 125
Coop
Full Member
Posts: 107
Re: exhaust valve main rod
«
Reply #5 on:
May 18, 2010, 04:29:14 AM »
Sure thing, hope that gets you fixed up.
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"Twenty years from now, you will be more disappointed by the things that you didn't do than by the ones you did do"- Mark Twain
1997 CR80RB, 1993 KX60, 1988 KX125
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exhaust valve main rod