Question about Yamaha DT 125 R Motorcycles

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DT 125 shuts off when i pull throttle. Its been standing for 3 years. when i take it for a drive it shuts off by itself. feels kinda hot but overheating shouldnt be the problem as its air cooled. anyone can help me plz?

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  • derekbez Sep 06, 2009

    Thanks for the fast reply. Do you know where i can get a repair manual for my bike? I've been looking around but can't find one anywhere. I think it's a 1996 model. I will clean the carb tomorrow and reply if it was the problem or not. But I'd like to clean everything and fix all other problems that might be there.

  • derekbez Sep 06, 2009

    Thanks for the fast reply. Do you know where i can get a repair manual for my bike? I've been looking around but can't find one anywhere. I think it's a 1996 model. I will clean the carb tomorrow and reply if it was the problem or not. But I'd like to clean everything and fix all other problems that might be there.

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It may have a dirty carb remove the float bowl and clean out the **** that may be inside, it may be as easy as that reassemble float bowl and start, if problem is not fixed remove the carb disassemble and clean then reassemble and try again to run the bike, remove the fuel hose from tank and ensure that a good flow of fuel is coming through fuel delivery hose from tank.

Posted on Sep 06, 2009

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1 Answer

My dtr gets hot easly


Hi, Anonymous and the usual suspects are:
1. Low coolant level.
2. Restricted radiator air flow.
3. Faulty thermostat.
4. Coolant pump or fans inoperative.
5. Vent hose crimped.
6. Air in the coolant.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
yamaha dt 125 engine problem plz help
Overheating Dt125R
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
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Hot to take apart a yamaha dt 125


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 blue links below. Good luck and have a wonderful day.
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I have a dt 125 2005 and the throttle will not return


simple you need a new throttle cable, its frayed hence the non return of the cable

May 05, 2011 | 2000 Yamaha DT 125 R

1 Answer

My dtr125 96 i have done top end pistone rebore starts every time runs but over heats has been stolen 6 years ago


The DT series had I believe a separate oil tank and oil injection pump.
Ensure the oil tank vent is clear, (some tanks have vent hose, others vented cap)...you need a vent to delivery oil to pump suction.
On the pump, ensure the stroke adjustment cable from the throttle is connected and rotates with throttle.

Mar 10, 2011 | 2000 Yamaha DT 125 R

1 Answer

Yamaha dt 125 r 2001, was overheating, i took me rad off and can smell fuel in the rad, ive put a new headgasket on and thermostat housing gasket, cud any1 tell me what else to check,that would of made it...


Your bike is fairly new, the water pump should be fine. But you can see the water moving in the top of the radiator when the cap is off and the thermostat is open, I don't know how you got the gas in there, unless somebody is pulling a prank on you. The head gasket wouldn't do it, you would find oil in there, or water in the oil, but not gas. Gas could leak down through the pump if it was bad and get into the oil.
Fill up your radiator with premixed coolant, and check the fuel lines, filters, shut offs, etc, check the oil for water, gas, and then check the thermostat if nothing else works, it should be closed in cold water and open up when the water gets hot, put it in a pan on the stove and watch it. A thermometer will match the number on the thermostat. like 125 degrees. Or something like that.Hope this helps.

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Problem with autolube pipe 1999 yamaha dt 125 air cooled


it will rev cause it is sucking air where the oil pipe used to be. the tube will be close to the rubber intake, if not on the intake itself

Feb 12, 2010 | 2000 Yamaha DT 125 R

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I have just put my clutch and clutch plates back on my dt 125 and when i pull the clutch leaver in it feels like nothing is there and the cable is connected


If it is a hydraulic clutch, i would continue to squeeze handle to build up pressure. If it is only a cable clutch, Re-check your clutch springs that you should have replaced. They should not be all in the same direction.

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Yamaha DT 125 R intake leaks


Pull the heads and have the intake manifold mating surface planed.

Nov 10, 2008 | 2003 Yamaha DT 125 R

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