kawasaki KX 125 - Answered Questions & Fixed Issues - Page 5


Hey Fata.... PLEASE take the carb(or the whole bike) to a QUALIFIED PROFESSIONAL... it will save you time and effort..carb work is NOT for amateurs..there is A LOT more to tuning/cleaning/setting a carb than a screw or two..

2004 kawasaki KX... | Answered on Jul 17, 2017 | 34 views


Hi, Nick if you have changed your fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" your not getting enough fuel.
1. Closed to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. Wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, the engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
High RPM sputtering bogging problem
Carburator Theory and Tuning
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
Kawasaki kx125 1997 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2003 kawasaki KX... | Answered on Jun 24, 2017 | 179 views


jet size and exhaust muffler are not connected
failing at high rpms indicates a problem coil or capacitor or failing ignition control module
if it has points or cdi ignition it could be from worn shaft that is wobbling at speed causing the miss

2003 kawasaki KX... | Answered on Jun 24, 2017 | 41 views


Hey Steve
Put a new spark plug in first...
... Sounds more like a fuel delivery issue... (the jests are in the carb and are considered one item). IF THE ENGINE HAS BEEN MODIFIED - FIND A REAL PRO THAT KNOWS HOW TO JET AN ENGINE - I CANNOT STRESS THIS ENOUGH - THIS IS not FOR AMATEURS!!
Make sure you have fuel flowing to the carb..(turn the gas off at the petcock - remove the gas line and then turn the gas on -- if its flows quickly and a full stream - turn the gas off, reconnect the gas line. Now, on to the carburetor... IF you are a great mechanic, you can clean and set the carb..IF NOT - take it to a qualified pro!! After the carb is cleaned and set.. it should run great...
Please reply to me when you are done with these steps..

2004 kawasaki KX... | Answered on Jun 22, 2017 | 58 views


Hi, Brandon nice novella, it could be a funky power valve and they are moderatley easy to clean/repair and you will need the free manual provided below as for a gasket/o-ring you may be able to reuse the old one if you are careful removing it, worse case scenario you can always make a gasket out a cereal box and use high temp silicone for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Kawasaki KX powervalve set up
How to install KIPS on Kawasaki KX 125 Power Valves
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
Kawasaki kx125 1997 Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2003 kawasaki KX... | Answered on Feb 28, 2017 | 35 views


Check VIN location at this page: http://vin-location.com/

2003 kawasaki KX... | Answered on Sep 09, 2016 | 100 views


Hi, David for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Kawasaki, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
2003 Kawasaki Eliminator fuel line routing Google Search
Kawasaki Eliminator 125 Service Manual
OEM Parts for Kawasaki
http://mybikemanuals.com/kawasaki/kawasaki-uncategorized-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

kawasaki KX 125... | Answered on Sep 06, 2016 | 164 views


Hi, Colin you may have a kicking gear engagement issue, do a compression test when the engine is at operating temperature should be around 125-130 psi. for more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Minimum Compression Required
Curing 2 cycle engine problems
Small Engine Repair Compression Test on 2 Stroke Craftsman Chainsaw
https://www.howtomotorcyclerepair.com/images/Kawasaki-KX-125-KX250-Service-Manual-2003-2004-2005-2006-2007-2008.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2003 kawasaki KX... | Answered on Mar 26, 2016 | 39 views


Hi, Farley my best guess assuming you mean the crankcase breather line is any gasket/seal that comes in contact with coolant has failed or was improperly installed. For more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
http://vermijsmotorsport.nl/manuals/kx125250-030408.pdf
OEM Parts for Kawasaki
http://www.kawasaki-techinfo.net/searchOM.php?view_lang=EN&spec=OC&book_no=&lang_code
Kawasaki KX 125 2004

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2003 kawasaki KX... | Answered on Mar 09, 2016 | 25 views


Hi, Lloyd para sa sitwasyong ito Gusto kong tumawag sa aking mga lokal na dealer o serbisyo / department bahagi kagalang-galang na tindahan at magtanong tungkol sa anumang mga posibleng mabilis na ayusin , mga sagot, o pagtatanong bahagi. Kung kinakailangan, sasakyan ang iyong mga bike sa dealer o tindahan at magkaroon ng isang propesyonal na tekniko dalhin ito para sa isang test drive, kung ito ay nasa tumatakbo kondisyon, at magbibigay sa iyo ng isang nakasulat na pagtatantya ng pag-aayos at sagutin ang anumang mga tiyak na katanungan na maaaring mayroon ka tungkol sa iyong isyu . Para sa karagdagang impormasyon tungkol sa iyong isyu mangyaring bisitahin ang website sa ibaba. Good luck at magkaroon ng isang magandang araw.
http://vermijsmotorsport.nl/manuals/kx125250-030408.pdf
http://www.kawasaki-techinfo.net/searchOM.php?view_lang=EN&spec=OC&book_no=&lang_code
2000 Kawasaki KX125

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

kawasaki KX 125... | Answered on Dec 11, 2015 | 241 views


for kx125, that kind of problem i kind of remember my friend just like that too. so clean everything inside . so u have to changes the valves and also the lifter then do the piston pin too,.also chick the rod if in good! that's it for now then when u do that tell me what going on!

kawasaki KX 125... | Answered on Jun 07, 2015 | 314 views


usually 2 strokes foul plugs when the oil is two strong in my old bike i mixed the gas 40:1 try that and if it dosent work i would take it to your nearest dealer and get them to check it out

2003 kawasaki KX... | Answered on Apr 28, 2015 | 191 views


clean air filter, spark plug and change oil, adjust valves if possible or noisy, done!

kawasaki KX 125... | Answered on Jul 30, 2014 | 456 views


check your carb float pin.

kawasaki KX 125... | Answered on Jul 28, 2014 | 20 views


If you own a KX125, you need to own a factory service manual!!

kawasaki KX 125... | Answered on Jul 26, 2014 | 112 views


Check the timing it should be set at top dead center or a hair before top dead center, the other issue could be it's not pulling fuel which would mean it needs a good carb cleaning

2003 kawasaki KX... | Answered on Jul 11, 2014 | 93 views


Could be the power valve is dirty or blocked from operating. May be a carburetor problem too. Has the carb been cleaned lately?

2003 kawasaki KX... | Answered on Apr 13, 2014 | 108 views


Hi, I am confused, your problem question banner shows the year as 2003 for your Kwaka. Vin number is normally for the frame/chassis. If you look around the engine you should see a stamped/etched alpha numeric code. If you call Kawasaki they should be able to tell you the details regarding this code.

2003 kawasaki KX... | Answered on Jan 30, 2014 | 133 views

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