Question about 2002 Yamaha TT-R 125

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My 2002 ttr 125 is cutting out at full throttle in every gear i live at 5000ft does that have anything to do with it ?

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If you were riding it before where you live then that is not the problem. Could be that your jets in your carb are dirty. Your main jet might have a piece of dirt lodged in it. Does it have a fuel filter in line between the Fuel Tank and Carb? If so, you might want to change it. Also, If you have your carb cleaned, it should run better. I hope that this helps.

Posted on Aug 25, 2010

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bad electrics maybe? how good does it idle? you clip on you cut off valve / slide in your carb may have the clip set one or two notches too low. or it could be a blown crank seal, does it smoke badly?

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Ttr 125 carburetor air fuel mixture setting


Hi, Anonymous 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 Yamaha, 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 please click on the links below. Good luck and have a nice day.
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2005 yamaha ttr-125 will shift into 1st and neutral fine but will not shift into any other gears.


Hi, Fmarules and the usual suspects are:
1. Clutch not disengaging.
2. Bent shift shaft.
3. Shift fork bent or seized.
4. Gear seized on the shaft.
5. Gear positioning lever binding.
6. Shift return springs weak or broken.
7. Shift return spring pin loose
8. Shift mechanism arm spring is broken.
9. Shift mechanism arm is broken.
10. Shift drum is broken.
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.
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Sep 16, 2012 | 2005 Yamaha TT-R 125 LE

1 Answer

2002 yamaha ttr 225 idles high when let off gas but eventually idles down on its own and hard to start when cold with choke or without


Hi, David and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links blue below. Good luck and have a wonderful day.
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http://tjsconcepts.com/ttr225/TTR225_Service_Manual.pdf
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Jun 21, 2011 | 2002 Yamaha TT-R 225

1 Answer

What type of oil does my 2002 yamaha ttr 125 take


10w-40 should work just fine. I prefer a full synthetic, like Amsoil or Bel Ray. Avoid "energy conserving" oils. They contain additives the clutch won't tolerate. API rating SL/CF,SJ,SH,SG are all acceptable. Happy biking!

Jun 13, 2011 | 2002 Yamaha TT-R 125

1 Answer

Hi, it appears that the floats are sticking on my 2002 TTR 125L. I have taken the carb off and cleaned it really good numerous times, and I just purchased a new carb rebuilt kit, and replaced it, to no...


Hi, Anonymous 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.
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.
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Dec 27, 2010 | 2002 Yamaha TT-R 125 L

1 Answer

2002 yamaha ttr 125 engine flutters when you throttle it wide open


sounds like the rev limiter kicking in to me..not sure

May 28, 2010 | 2002 Yamaha TT-R 125

1 Answer

Why does my ttr 125 not start then backfires?


Your bike has a diaphragm on the carb. Every time you twist the throttle a shot of gas goes into the cylinder. Chances are you are flooding the engine by twisting the throttle too often. Flooding can create a backfire. Start with a clean dry plug. Twist the throttle once then leave it alone for about six kicks. Repeat the process if needed.

Aug 13, 2009 | 2002 Yamaha TT-R 125

2 Answers

Got a 02' 125 ttr and it make a knocking noise in first gear? shifts fine and no other noise in other gears.


You have a broken tooth on the first gear set. This means two gears will need replaced; the drive gear and the driven gear in first gear range. DON'T just replace the gear with the broken tooth. Replace the gear it meshes with also.

Jul 23, 2009 | 2002 Yamaha TT-R 125 L

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