Question about 2003 kawasaki KX 125
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Posted on Jan 02, 2017
Go to the dealer and ask for the stock plug for your bike. Check for spark on the new plug then install the plug.
Remove the carb , dissemble it and clean the varnish out. Remove the petcock, ( gas valve ),water trap and clean it out. Next let one cup of gas flow into a container. Any water or rust in the bottom of the container? If any rust was in the water trap or the container then purchase an inline fuel filter to eliminate the rust getting into the carb.
If cleaning the carb yourself does not do the trick then take it to the dealer and have them clean it and install a car kit. This should eliminate the carb as a problem. Get a new air filter and install it.
Now you have spark, gas and air. If it still will not start it is likely that you need new crank seals. On a bike that old you may well need new crank bearings as well.
Please rate this solution. Thanks!
Posted on Mar 22, 2009
There are two possible solutions:
1. If you are sure the engine is OK then you can increase the throttle screw to increase idle race. The throttle screw can be found where the throttle wire connects with the carburetor.
2. If the bike is old or if you have not changed the engine oil on time then the bike needs piston ring replacement. This should be done as soon as possible to avoid more engine damage and effect savings on cash.
Posted on Aug 09, 2009
ok buddy on the carb will be some sort of screw and idle screw turn this in 1/4 of a turn with the machine running until it idles at 1000rpm also the choke will stall the engine when warm the choke is only for cold starts get back to me more info or problems
Posted on Sep 24, 2009
where the valves set cold or hot? could make the world of a difference...is there intake leaks? bad floats perhaps....its a problem that will take some time cancelling out problem by problem
Posted on Oct 09, 2009
If it dies when put into gear then its the side-stand switch (stand is down or switch not working)
If it dies when the clutch lever is released then either it was released too quickly with not enough revs, the engine doesnt have enough power to pull away or possibly the clutch switch is working in reverse
Hope this helps.
(If it does then please mark this as 'useful')
Posted on Jan 29, 2010
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