Question about Yamaha DT 125 R Motorcycles

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My yamaha dt 125 r takes to long for power bands

My dtr power bands usely kick in round 6000res now it like it doesnt have them the jst after 7000res they wod kick in can any help

Posted by Anonymous on

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  • Yamaha Master
  • 40,804 Answers

Hi, Anonymous your power valve may be going south 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.
Yamaha DTR Power Problem Not Hitting powerband Help needed motorcycles
DT125 whys my bike so slow
OEM parts for Yamaha

Posted on Mar 10, 2016

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Posted on Jan 02, 2017

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SOURCE: hi there i have a yamaha dtr 125 thats smokes

Assuming you are using two stroke engine oil, the pump is pumping too much into the gas. DO NOT use motor oil in the gas. If 2 stroke oil is being used, then get a new pump, fix the one you have or disconnect the pump and mix the oil with gas when you fill up. Four ounces of 2 stroke oil per gallon of gas equals the standard 32/1 fuel mix.

Posted on Apr 28, 2009

  • 1 Answer

SOURCE: yamaha DT 125 2003 Main beam headlight keeps

i have well, had a very similar problem, my headlight kept going on my 1990 dt125r from 1990 to 2003 the engine is the same so i feel it may be the same fix, the regulator/rectifier stopped working properly and was alowying to much power to get to the headlight and blew it, i got a new regulator/rectifier for around £30 ish, you could tell when it went caus the higher you reved it the brighter the light got until it blew not like when it gets brighter from tickover, it was just proggesive and just kept getting brighter the more you revved it, hope this helps

Posted on Aug 06, 2009

ollie reece
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SOURCE: Yamaha DT 125 runs well but won't power band

servo valve sounds like it needs adjust or the power valve adjusting do you have a manual ?

Posted on Dec 03, 2009

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SOURCE: 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

Posted on Apr 14, 2010

  • 1508 Answers

SOURCE: yamaha dt 125 red oil light has just started to

Yes , time to top up the oil, Yamaha just want to give you plenty of notice, cause nothing will destroy the engine quicker than running out. I would be topping it up as soon as you see a bubble in the window.

Posted on May 01, 2010

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1990 Yamaha DTR 125

Hi, Jonathan after careful deliberation 4 out 5 Yamaha 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. Good luck and have a nice day.
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Were is the cdi box on a yamaha dtr 125 2002

Hi, Anonymous sorry 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 visit the websites below. Good luck and have a nice day.
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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.
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Jst gt dtr wen my bands kick in its spluttering and theres no power

being a 2 stroke it has a lot to do with fuel mixture if you mix your own gas try mixing less if its a oil pump theres a screw on the carb fairly big turn it a little to the right and see

most important let it warm up

Mar 24, 2011 | 2000 Yamaha DT 125 R

2 Answers

No spark on yamaha dtr 125cc

Sounds like you are flooding the engine with gas. Put in a new spark plug then twist the throttle one time to prime the cylinder. Now get your hands off the throttle and give it a few kicks. Each time you twist the throttle the power valve gives a shot of gas. Too much can flood the engine quickly.

May 17, 2010 | 2000 Yamaha DT 125 R

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Can you put a kick start on a dt x and what sort of fuse do i need for me electric start to work agen

hi buddy do these bikes all ready have a kick start as i know the dtr has also you will need a 15a fuse for elec starter

Dec 02, 2009 | 2006 Yamaha DT 125 X

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Hi there i have a yamaha dtr 125 "1990 on a h,plate my left hand engine casein is cracked at gear select,coul anyone tell me what year of casings will fit,ive seen a 1999 one will it fit,also piston and...

The bike is 19 years old. Caseings will be VERY hard to find. Suggestion; take the case to a welding shop and ask them to weld the crack. Teey will have a MIG or TIG welder which will do the job and the cost should only be about 20 bucks.

Mar 09, 2009 | 2003 Yamaha DT 125 R

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