kawasaki KX 125 - Recent Questions, Troubleshooting & Support - Page 5

Check your fuel filter, sounds like it maybe clogged or needs replaced, can use a generic gas filter to fix or troubleshoot your problem. Rick

Sounds like too much fuel. To go from the pilot of 27.5 (assuming this was stock) to a 45 is a huge jump. Put the 27.5 in and see if the bog goes away. I would back the screw out 1 1/2 also, and put the clip in the center.
The pilot affects idle to 1/4 throttle.
The needle and clip affect 1/4 to 3/4
The main is more like 1/2 to full
****make sure your air filter is clean...
(Irratic idle may be due to an air leak)

Specialist job, not saying you cant do it, but it involves you removing all the old wire, measuring the length and diamiter of the wire, and replacing the same amount exactly, to obtain the correct resistance, not allowing the wire to go to earth at any point during the rewinding , you have nothing to loose just time and patiance, maypay off dividends

Try here for the info you need.

http://www.teamgreennews.ca/en/techside_settings.html

All the best

Yr biek exist from 1986 to 2008. Looking at that number it might be 1991 or 1992 model. To be sure go to your local Kawa dealer and ask them, it is free

piston kit, wrist pin bearing, top end gasket kit and a honing tool to clean your cylinder is about it I would probably buy new air filter and spark plug if I was doing it, but not essential ?

The cylinder and head nut on a 99 KX 125 is 18 ft-lb.

there is a checl bolt on the rh side it doesn't hold anyhting one and has a copper waher. sorry i tried to get the picture on here but it's to big

Proper proceedure would include a 17 or 19mm allen socket for the end of the axle, but normally you can get the axle nut loose by leaving the 2 pinch bolts tight in that end of the axle. So, in order-
1-remove axle nut. 2-remove 2 bolts holding the brake caliper to the fork and tie it back out of the way.3 loosen the pinch bolts at the bottom of both fork tubes, this will allow the axle to slide out. There will be a spacer on the rotor side of the wheel for the bearing, remember this when you reinstall.
Installation-1-clean and lightly grease the axle and inside the bearing seals. 2-install spacer on rotor side of the wheel. 3-reinstall wheel onto the forks,tighten axle nut,leave the pinch bolts loose. 4-with the pinch bolts loose, compress the forks down-this insures that they are parallel to each other. If they forks aren't parallel, they will wear the bushings and fork seals prematurely. 5-tighten the pinch bolts to about 15NM. 6-torque axle nut to 40NM. 7-reinstall caliper.

I would check the compression of the piston, the rings could be stuck and not have good compression. It should show 120 psi or more. Also can pull off the exhaust and look in the exhaust port to see the rings, piston, and cylinder walls. If the motor has a power valve make sure that is not gummed up or stuck. Mark C

$207.00 at Babbitt's. www.babbittsonline.com Please rate my answer. Thanks.

Is it possible that rings were broken during the assembly?

32:1 is what is considered stock for most 2 stroke kawasaki

on rear axle shaft (both sides) are adjustment screws (bolts) make sure they are exactky the same when you are done

Well - not knowing the condition of the bike it could be a lot of things. I would start with a fresh spark plug, fresh fuel and a clean air filter. You say you already did the carb, reeds and top end - good. I assume you set the float level correctly. Did you pull out the petc0ck from the fuel tank - theres a filter that might be plugged up. Check your exhaust system for plugs - I've seen mice nest in pipes over the winter. If all this fails, look into your power valve system to ensure it's working and adjusted properly. If so, then do a leak down test - you might have a lower end leak. That's the best I can do without seeing or hearing it run. Hope this helped!

is it loosing water mate and the mix is 32-1 mate and get some good oil if it loosing water the head gasket has gone if it not this ckeck the jeting on the carb good look

check fuel line.... from tank to carburator.... probably your having fuel problem, there might have some foriegn object that got stock up... check out the main jet....

yes you can but the best is 20/40

15.89-16.16 ounces. Here is an added bonus.
http://www.kawasaki-techinfo.net/showOM.php?view_lang=EN&spec=US&book_no=99920-1957&lang_code=EN

Most likely reason for this is water pump seal