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2001 yamaha ttr 125 when started it runs at full throttle without me touching the throttle

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  • Motorcycles Master
  • 1,554 Answers

Most likely causes:
Cable needs to be lubed
Cable is routed so it's being pulled on
Cable was pulled so one end (at throttle or carb) of the outer cable sheath became pulled out, and needs to be put back into place.

Posted on Nov 22, 2013

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  • Contributor
  • 23 Answers

I would check the throttle adjustment screw on the throttle assembly on handle bars. Be sure it is not screwed all the way in for max throttle. You can also check the carb and be sure that the idle screw is not adjusted for high idle as well. There may be an adjustment screw on carb for the cable stop.

Posted on Nov 22, 2013

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Posted on Jan 02, 2017

voodoomox
  • 1689 Answers

SOURCE: I have a 2003 yamaha ttr 125. At times it acts

3 things,

carb check
float bowl check
and clutch check.

these, if not set right will give out what you are experiencing.

you may refer to the manual on the default / recommended settings depending on the type of gas you are using.

regards, safe trails.

Posted on Jun 30, 2009

  • 15 Answers

SOURCE: front brakes on my yamaha ttr 125 wont work

First. Check the brake fluid level.
Second. Look for leaks in the lines and calipers.
Third. Check the brake pads.
Fourth. If pads worn, pull and replace
Fifth. If pads are okay and all works above the calipers.
Time to pull the calipers and rebuild.
Go to local dealer buy some parts and clean.
Rebuild

Posted on Aug 19, 2009

Testimonial: "thank you i had to rebuild"

  • 1 Answer

SOURCE: Yamaha TTR 125 L won't idle

i cleaned the carb on the bike and put it back together and now it is as if the float is stuck open and is just dumping gas out of the carb all over the ground.

Posted on Sep 02, 2009

ollie reece
  • 1167 Answers

SOURCE: Oil capacity for a 2004 Yamaha TTR 125 LE

1.2 litres or 1200 mls buddy

Posted on Nov 07, 2009

  • 1 Answer

SOURCE: 2001 yamaha ttr 250, starts, idles ok, bogs at acceleration

I have the same bike and same problem. Check the intake hose that connects the carb to the motor it may have a crack mine did and lost power when the bike warmed up. They don't make a replacement hose for it so I am using a rubber plumbers coupling with hose clamps. Might work? The hose is inch and a half diameter and about three inches long try that maybe. Good luck If it makes a chirping sound when the bike gets warm it's probably that hose sucking in air and screwingup your mixture.

Posted on May 06, 2010

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1 Answer

2001 ttr fuel line routing


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 $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.
2001 ttr 125 fuel line routing Google Search
2003 TTr 125 Update 2
http://www.yamaha-motor.com/assets/service/manuals/2007/LIT-11626-20-01_ttr125all_1961.pdf
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2012/2012_ttr125le_lit-11626-25-32_2021.pdf

Jul 13, 2014 | 2002 Yamaha TT-R 125 L

1 Answer

How to replace 2003 Yamaha TT-R 125 clutch


Hi, Scott 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 $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.
TTR 125 Clutch Replacement Question TTR
2001 Yamaha TTR 125 Clutch Removal
http://www.yamaha-motor.com/assets/service/manuals/2007/LIT-11626-20-01_ttr125all_1961.pdf
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2012/2012_ttr125le_lit-11626-25-32_2021.pdf

Jul 09, 2014 | 2003 Yamaha TT-R 125

1 Answer

Adjust carburetor yamaha 125 ttr


Hi, Anonymous if you have changed your fuel delivery system, air filter size or flow rate, mufflers or exhaust system 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, 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 websites below. Good luck and have nice a day.
Stock TTR125 Carb Screw Settings TTR
Ttr 125 Carb Idol settings
http://www.yamaha-motor.com/assets/service/manuals/2007/LIT-11626-20-01_ttr125all_1961.pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-tt-owners-manuals

Jun 21, 2014 | 2006 Yamaha TTR 125 E

1 Answer

2001 ttr 125 smoking problems


Hi, Anonymous your instrument gauges and lights can alert you to most electrical and engine issues they can not warn you about failed engine gaskets or seals so your engine has to resort to the old fashion method of colored "SMOKE SIGNALS" here is a breakdown of their meaning:
1. WHITE SMOKE on start-up can is usually caused by a blown head gasket allowing coolant to enter the combustion chamber and may start dripping out of the exhaust pipes or mufflers.
2. BLUE SMOKE on start-up is usually caused by failed valve seals. Smoke that is constant while riding is usually caused by valve to guide and piston ring clearances that have exceeded service wear limits.
3. BLACK SMOKE on start-up is usually caused by too much fuel in the combustion chamber this can be due to air/fuel mixture adjustment too rich, accelerator pump improperly adjusted, faulty choke/enrichner or not in the off position, faulty carburetor float needle and seat, pilot jet too large, fuel injectors leaking, smoke while riding is usually caused by the main jet being too large.
It should be noted that aggressive or abnormal throttle operation will cause these conditions to manifest themselves exponentially.
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 yamaha ttr 125 smoking bad TTR
Ttr 125 Smoking Problems
http://www.yamaha-motor.com/assets/service/manuals/2007/LIT-11626-20-01_ttr125all_1961.pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-tt-owners-manuals

Apr 13, 2013 | Yamaha TT-R 125 L Motorcycles

1 Answer

Yamaha 125 ttr idles to slow


Hi, Anonymous the carburetor throttle shaft wheel has two cables the cable closest to the right side of the bike is the throttle cable and the one closest to the left side is the idle cable. Right about the middle between the two is the idle adjustment bolt it faces out towards the air filter end of the carb. The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the idle adjustment bolt clockwise to increases idle speed and counterclockwise to decrease idle speed. If you have access to your air fuel mixture bolt you may adjust it as well if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture bolt clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the end, now back it out 2 full turns to establish a starting point start the engine and check the idle rpm's and adjust the idle adjustment bolt accordingly for 950-1050 rpm if necessary, adjust the air fuel mixture bolt 1/4 turn at a time and let the engine settle for about 10 seconds, clockwise for a leaner mixture and counterclockwise for a richer mixture you are seeking the highest rpm your air fuel mixture bolt can acquire without going past 3 full turns from bottom then readjusting the idle adjustment bolt back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air-fuel mixture bolt all the way in then your pilot/low-speed jet is too big. Final adjustment should be made with a clean air filter mounted to the carburetor. 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 wonderful a day.
Other Yamaha TTR 125 4T carb help
how to set idle up on ttr125 Texas Offroad Network Forums
YAMAHA TT R125 Owner Service Manual
OEM parts for Yamaha
YAMAHA TT R110E Owner Manual

Jul 20, 2012 | 2006 Yamaha TTR 125 E

1 Answer

How do I adjust the carburetor mixture screws on a 2001 yamaha ttr 125L


Hi, Anonymous the carburetor throttle shaft wheel has two cables the cable closest to the right side of the bike is the throttle cable and the one closest to the left side is the idle cable. Right about the middle between the two is the idle adjustment bolt it faces out towards the air filter end of the carb. The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the idle adjustment bolt clockwise to increases idle speed and counterclockwise to decrease idle speed. If you have access to your air fuel mixture bolt you may adjust it as well if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture bolt clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the end, now back it out 2 full turns to establish a starting point start the engine and check the idle rpm's and adjust the idle adjustment bolt accordingly for 950-1050 rpm if necessary, adjust the air fuel mixture bolt 1/4 turn at a time and let the engine settle for about 10 seconds, clockwise for a leaner mixture and counterclockwise for a richer mixture you are seeking the highest rpm your air fuel mixture bolt can acquire without going past 3 full turns from bottom then readjusting the idle adjustment bolt back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air-fuel mixture bolt all the way in then your pilot/low-speed jet is too big. Final adjustment should be made with a clean air filter mounted to the carburetor. 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 wonderful a day.
Stock TTR125 Carb Screw Settings
Ttr 125 Carb Idol settings
YAMAHA TT R125 Owner Service Manual
OEM parts for Yamaha
YAMAHA TT R110E Owner Manual

Apr 30, 2012 | 2002 Yamaha TT-R 125 L

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.
TTR 225 Carb Problems
TTR 125 Idle Issues
http://tjsconcepts.com/ttr225/TTR225_Service_Manual.pdf
OEM parts for Yamaha
http://tjsconcepts.com/ttr225/TTR225_Owner_Manual.pdf

Jun 21, 2011 | 2002 Yamaha TT-R 225

1 Answer

My Yamaha ttr 125 won't start. I cleaned the carb a few days ago and was able to jump start it with my car. I let it run for a while. but now i can't start it again, even when i try to jump it. What's...


I just had a similar issue. Bike would start when cold but once warmed up would die and not restart. My problem was the throttle valve. Check it by removing the black breather pipe at the rear of the carb. Look in the carb and twist the throttle. You should see the throttle valve slide up and down.

May 19, 2010 | 2003 Yamaha TT-R 125

2 Answers

This bike is a 2007 and is extremely cold blooded


check for air leak where carb meets intake manifold.air cleaner element must be in good condition and prpoerly seated.

Sep 22, 2009 | Yamaha TT-R 125 L Motorcycles

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