Question about Yamaha XT 125 R Motorcycles

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Yamaha XT 125 R float height

I have petrol leaking out of the overflow pipe on my Yamaha XT 125 r, I've had the carb off and its clean but I think the float height is wrong would you know the right height?

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  • Yamaha Master
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Hi, Alanwilson8 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 $9 you can download another one. 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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Posted on May 24, 2017

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Posted on Jan 02, 2017

Benimur
  • 6966 Answers

SOURCE: CARB PROBLEMS TTR 125 06 Reg

Hi,

Offhand, fuel overflow could be brought about by:

  • misadjusted/punctured float; and/or
  • dirt/sand lodged in the fuel inlet valve. Often this fuel inlet valve is a pin with one end pointed (sometimes rubber) and is controlled by the float.
A seized starter plunger would have to be replaced. This problem could have been brought about by:
  • short/jumping contacts of the starter switch;
  • sticking/corroded terminals/contactors of the starting relay.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 17, 2008

  • 3567 Answers

SOURCE: yamaha t80 townmate carb keeps overflowing with petrol

Yes, the float or the float needle is sticking in an open position. The only other possibility is a float that has a pinhole in it and has filled with petrol and will no longer float as it should.

Posted on Nov 22, 2009

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2 Answers

Yamaha XT 125 R Motorcycles carburetor leaks


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 links below. Good luck and have nice a day.
https://yamahaclub.com/forums/topic/34408-xt-125r-petrol-leak
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http://gigi600.altervista.org/immagini/xt125r/XT%20125%202005_service.pdf
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http://mybikemanuals.com/yamaha/yamaha-xt-owners-manuals

Jul 15, 2013 | Yamaha XT 125 R Motorcycles

1 Answer

Hi I have a yamaha xt 125 x and the bike is struggling to hit 45 mph I have devil exhaust but it happened wen I bought new wireing loom an put on the bike used to hit 80-85 mph any ideas what's wrong


Hi, Anonymous and the usual suspects are:
1. Inlet system air leak.
2. Enrichener valve not seated or leaking.
3. Damaged or restricted fuel tank vent system.
4. Restricted fuel supply tract.
5. Dirty or damaged air cleaner element.
6. Plugged bowl vent or overflow.
7. Worn or damaged needle or needle jet.
8. Vacuum piston assembly malfunction.
9. Loose or plugged main jets or passages.
10. Improper float level.
11. Accelerator pumps inoperative.
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.
https://yamahaclub.com/forums/topic/7132-seriously-slow-xt125-probem
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Jul 14, 2012 | 2005 Yamaha XT 125 X

1 Answer

Overflow pipe leaking on carburetor 125 xtz yamaha


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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http://gigi600.altervista.org/immagini/xt125r/XT%20125%202005_service.pdf
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Apr 19, 2012 | Yamaha XT125 Motorcycles

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Problem with starting my bike


Sticking floats or worn float valve needles or incorrect float height, tap float bowls to see it overflow stops (sticky float), remove and clean float bowls and fuel inlet passage with carb cleaner and compressed air, check float valve for wear to the rubber tip. Reset float height by slightly bending the metal tab on the float to adjust the closing height of the valve measure from the carb bowl mating surface to the top of the float when fitted then re adjust 1mm at a time higher untill fuel doesnt over flow.

Jan 25, 2012 | 1989 Yamaha FZX 750

1 Answer

I have a yamaha xt 125 r and every time i am flat out it dies


Hi, Broozer123 and the usual suspects are:
1. Inlet system air leak.
2. Enrichener valve not seated or leaking.
3. Damaged or restricted fuel tank vent system.
4. Restricted fuel supply tract.
5. Dirty or damaged air cleaner element.
6. Plugged bowl vent or overflow.
7. Worn or damaged needle or needle jet.
8. Vacuum piston assembly malfunction.
9. Loose or plugged main jets or passages.
10. Improper float level.
11. Accelerator pumps inoperative.
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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http://mybikemanuals.com/yamaha/yamaha-xt-owners-manuals

Jul 21, 2010 | 2005 Yamaha XT 125 R

1 Answer

Leaks gas from the carburator.


Hi, Morgan_honda 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 links below. Good luck and have nice a day.
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Jun 19, 2010 | 2003 Yamaha YZ 125

1 Answer

Yamaha t80 townmate carb keeps overflowing with petrol


Yes, the float or the float needle is sticking in an open position. The only other possibility is a float that has a pinhole in it and has filled with petrol and will no longer float as it should.

Nov 22, 2009 | 2005 Yamaha XT 125 R

1 Answer

LEAKING FUEL


You need to get some new float needles, and have the carbs cleaned and the float heights set correctly.

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2 Answers

2000 yamaha ttr90 fuel leaking out overflow tube


your float is stuck take carburator off and clean wiggle float and it shouldnt leak gas anymore

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