KX 125 smoking excessively

[ATKpilot99]

I just did the top end on a 1980 KX 125 I recently purchased. It ran when I bought it and it smoked but at the time I figured it was just because it hadn't been run for awhile and I didn't run it very long. I probably should have. To make a long story longer the bike runs good but the smoking does not really go away or lessen. Could this be a bad crank seal and if so can it be replaced without splitting the cases ? Google searches don't show a whole lot on this subject for this model.

[Foxx4Beaver]

if it is a bad clutch side crank seal...you will have to open up the bottom end.

[ATKpilot99]

Thats what I was afraid of. I've never done it although with the correct tools I probably could. How difficult is it and what would the cost be for tools ?

[Foxx4Beaver]

here's a breakdown...

[Foxx4Beaver]

Thats what I was afraid of. I've never done it although with the correct tools I probably could. How difficult is it and what would the cost be for tools ?

all you need are some patience...and you can get cheap case splitters/flywheel pullers on e-bay...or you can spend a few bucks and get a good one...

http://www.motionpro.com/motorcycle/partno/08-0245/

http://www.ebay.com/itm/Crank-Case-Splitter-Atv-Motorcycle-Dirtbike-Pwc-Motor-Engine-Puller-Crankcase-/281694530418?hash=item41964d6b72&vxp=mtr

[ATKpilot99]

Thanks so much for the help. I think that would for sure be cheaper than the labor if I brought the bottom end to a shop.

[Foxx4Beaver]

absolutely...waaay cheaper.
try to find/get a manual as well...whether it be an oem manual or a Clymer.

here's a few to chose from...

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2059210.m570.l1313.TR0.TRC0.H0.X1980+kawasaki+kx125+manual.TRS0&_nkw=1980+kawasaki+kx125+manual&_sacat=0

[alexander-vmann]

you migth want to check your jetting and fuel/oil mix, before you split the case,

[Foxx4Beaver]

a leak down test would be best.