kawasaki KX 125 - Popular Questions, Answers, Tips & Manuals


Hi, Jeff you need a carburetor rebuild kit that has both needle and seat and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.kawasakimotorcycle.org/forum/kawasaki-motocross-offroad/46372-major-problem-fuel-running-out-carb-kx-125-a.html
kx125 carb leaking out of overflow
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
1995 Kawasaki KX125 Owner Manual

kawasaki KX 125... | 44 views | 0 helpful votes


Hi, Sophie I could not find 1992 KX125 Transmission specs but the 1992 KDX125 has 6 speeds and a 1991 KX125 has 6 speeds

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

kawasaki KX 125... | 126 views | 0 helpful votes


Hi, Chris for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Kawasaki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
KX 65 FORK OIL WHAT TYPE how to meassure level
http://www.kawasakimotorcycle.org/forum/kawasaki-motocross-offroad/64021-2000-kx65-fork-oil.html
Kawasaki KX65 Service Manual
OEM Parts for Kawasaki
Kawasaki KX65 Owner Manual

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2003 kawasaki KX... | 249 views | 0 helpful votes


Hi, Sophie after careful deliberation 4 out 5 Kawasaki Gods give this one a thumbs up, but just to be on the safe side you should give your local dealer's parts/service department a call to confirm.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Kawasaki Replica Plastics
How to Rebuild Motorcycle Shock
Kawasaki KDX125 KDX200 KDX250 Complete Workshop Service Repair Manual 1989... $20
OEM Parts for Kawasaki
http://mybikemanuals.com/kawasaki
Kawasaki KX125 Service Manual free

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


kawasaki KX 125... | 54 views | 0 helpful votes


Hi, Sophie, you are relentless, please contact me at xlch@mail.com and I will do what I can to help you.

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

kawasaki KX 125... | 27 views | 0 helpful votes


Hi, Sophie, the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
Good luck and have a wonderful day.

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

kawasaki KX 125... | 25 views | 0 helpful votes


Hi, Sophie the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
Good luck and have a wonderful day.

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

kawasaki KX 125... | 23 views | 0 helpful votes


Hi, Austin for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
bolt in gas tank is stripped cant take shrouds off
2000 KX125 Part 2 Removing Seat Side Panels Rad Shrouds Tank
Kawasaki KX250 Service Manual
OEM Parts for Kawasaki
2001 Kawasaki KX125 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... | 13 views | 0 helpful votes


Sounds like they were put in in the wrong place.. swap them..tighten with an air tool...the washer with the splines goes between the basket and the inner hub..the big washer goes behind the clutch basket.(goes on the shaft first)

2007 kawasaki KX... | 52 views | 0 helpful votes


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... | 165 views | 0 helpful votes


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... | 34 views | 0 helpful votes


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... | 55 views | 0 helpful votes


Hi, Chris the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
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.
Kawasaki KX125 Service Manual
OEM Parts for Kawasaki
Kawasaki kx125 1997 Owner Manual
Kawasaki KX 125 2005
https://en.wikipedia.org/wiki/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... | 22 views | 0 helpful votes


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... | 41 views | 0 helpful votes


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... | 35 views | 0 helpful votes


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... | 159 views | 0 helpful votes


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... | 39 views | 0 helpful votes


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... | 241 views | 0 helpful votes


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... | 25 views | 0 helpful votes

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