20 Most Recent 2005 Yamaha DT 125 X Questions & Answers


Hi, Blasphemo956 YaYa is correct

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2005 Yamaha DT... | Answered on May 25, 2017


Hi, Anonymous the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
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.
DT 125 de restricting
How to Derestrict Yamaha DT 125 RE
Yamaha DT125RE 2005 Service Manual
OEM parts for Yamaha
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2005 Yamaha DT... | Answered on May 11, 2017


Hi, Mani33_1978 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.
2005 Yamaha DT 125 wiring diagram Google Search
Yamaha Motorcycle Wiring Diagrams
Yamaha DT125RE 2005 Service Manual
OEM parts for Yamaha
http://www.dt125.cz/download/Owners_Manual-DT125X_RE.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2005 Yamaha DT... | Answered on May 09, 2017


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.
Yamaha DT125RE 2005 Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-dt
Yamaha DT 125 2006
Yamaha DT125 Wikipedia

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2005 Yamaha DT... | Answered on Apr 05, 2017


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 $ 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.
Dtr 125 water pump diagram Google Search
water pump gear
http://www.motogelnar.cz/manual/YAMAHA/DT125X_RE-05-Service_Manual.pdf
OEM parts for Yamaha
YAMAHA DT125R Owner Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2005 Yamaha DT... | Answered on Jan 09, 2017


Two cycle engine injection oil - any quality two cycle injection oil.
Crankcase oil - Quality 10-w30.

A DT2 is a 250cc enduro - on/off road.

2005 Yamaha DT... | Answered on Mar 12, 2016


1. Why do you think you need a "racing" cdi? What circumstances present themselves to require you have a "racing" cdi?

2005 Yamaha DT... | Answered on Mar 12, 2016


hi,most two strokes run a gear oil in the gearbox,unless specified by the manufacturer dont use engine oil as it is not heavy enough,i use a 75w gear oil in my nsr 250 and it works fine..cheers

2005 Yamaha DT... | Answered on Mar 12, 2016


10w40 is what you want for the gear box. Yamalube two stroke engine oil is what you want for the small oil resevoir side cover

Please rate this solution as a "FixYa". Thanks!

2005 Yamaha DT... | Answered on Mar 12, 2016


Do a Vin number search and you will find out what you have, the frames are identical as i have done complete builds of both the 125 and DT175MX and every part fits each bike here in the UK

2005 Yamaha DT... | Answered on Oct 26, 2014


your clutch disc might be bad.

2005 Yamaha DT... | Answered on Mar 28, 2014


Not familiar with that bike...is the oil tank higher than the carb? I have seen 2 strokes weep past the injection pump into the carb if the tank was high. a simple fix to that is to get a longer line and put a loop in it. I have also seen vents on the oil tank get clogged with dirt, then expansion of the oil in the tank forces it into the carb...check to make sure the tank is venting. If it is venting...then I would loop the oil feed line,,,don't even really have to loop it...just at some point the line needs to be lower than the carb, how much lower is trial and error, but oil generally doesn't weep upwards very easily.

2005 Yamaha DT... | Answered on Mar 23, 2014


If all other gears are doing okay then I would check with your local dealers parts department and ask the number of teeth on the counter sprocket and on the rear sprocket on a stock dtr 250. The prior owner may have mounted a larger counter sprocket and / or a smaller rear sprocket on the bike. The drive ratio may be out of range such that the engine is trying to make for a really high top speed but just doesn't have the strength to do it.

Please rate this solution. Thanks.

2005 Yamaha DT... | Answered on Dec 15, 2012


If is violently loosing coolant from overflow then best case you need new radiator cap worst case head gasket needs replacing.

If it squirts a little when hot now and again or when you turn motor off squirts or drips a little then this is probably normal. just releasing pressure

I am guessing its leaking alot or you wouldn't have posted here.

www.motoxpartsonline.com

2005 Yamaha DT... | Answered on Oct 26, 2012


Hi,,,put a bigger sprocket on the front and or smaller gear on the back wheel.

more teeth on front less teeth on rear

2005 Yamaha DT... | Answered on Mar 14, 2012


if it seems to be running fine, its probably about as good as its gonna get. the 125 just isn't a power house. you might be able to gain a little bit of extra power through add ons like exhaust, rejetting the carb, etc.

2005 Yamaha DT... | Answered on Mar 03, 2012


32 to 1 is the proper fuel mix > 4 ounces of two stroke engine oil per gallon of gas. Advance the timing a couple of degrees for more rpm. The power wil come with the revs. Boring the cylinder and installing a larger piston will help. Also, consider installing fresh crank seals. Rejet the carb one or two steps larger and move the jet needle clip downward one or two notches.

2005 Yamaha DT... | Answered on May 20, 2011


usuaully rule of thumb .002"piston to cylinder wall clearence,anything more than .004"is about do for next size piston and bore.

2005 Yamaha DT... | Answered on Feb 16, 2011


Hi,
A new one costs about 3990.00 euros
and a used one from 1000 to 1800 euros, here in italy.
Regards,
Alex
PS-Dont't forget to vote me, thank you !

2005 Yamaha DT... | Answered on Feb 04, 2011


If you don't put pre-mixed fuel in your tank then the tank in the back is probably a fuel mix oil tank. You'd use an injector oil to fill that so it has something to mix into your fuel. Engine crankcase oil is a different thickness and wouldn't work for that application.

2005 Yamaha DT... | Answered on Sep 11, 2010

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