Maintenance & Technical > KX250 / KX125

1989 kx125 restoration master thread

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queen of spodes:
Linkage that came with the bike was frozen up pretty good. 


Luckily I spotted a set on Ebay that was fully disassembled.  Good for rebuilding

Pressing out the bearing races


Shock mount was rusted up pretty good.. had to press this little one out (wouldn't come out with my vice)


Got all of the bearings replaced and this piece is ready to go


queen of spodes:
Linkage mount on the swingarm was tricky.   Got the sleeve out using this tool


But the bearings had to be pressed out.. took a bit of care and force to not damage the swingarm.    Had the same problem getting the pivot bearings out. 


Ready for new bearings  (to do - working on this today I hope)

queen of spodes:
Back to the engine for a post..

The top end looked OK except for a broken post on the LH exhaust valve.   This led to a big search for a replacement, or maybe for a repair.  I posted a thread on VitalMX's Old School forum and got some help.   The VitalMX thread is worth reading.. lots of options listed there for getting a power valve for these old bikes (the power valves are NLA and nearly impossible to find as NOS).   Here's that thread: http://www.vitalmx.com/forums/Old-School-Moto,22/Custom-machining-an-obsolete-NLA-power-valve,1270119

Here's the top end with exhaust valves removed


Sent my cylinder & head off to PowerSeal a couple weeks ago and hope to have it back soon.

queen of spodes:
A couple months ago I got the frame stripped and ready for some repair & powder coat



Had a local machine shop fix the right side footpeg mount (which isn't replaceable like the left side)


I regret not having them fix the brake pivot mount.. completely overlooked that (after powder coating). 

Dropped frame off at PCC in Atlanta


and got it back a couple weeks later




queen of spodes:
Got some new plastic and OEM replica graphics in a few weeks ago.


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