Question about 2006 Yamaha DT 125 X

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Yamaha Dt125x problems

Hi
I have a '57 plate Yamaha DT125X. i have two problems.
the first is the rear light (night light, not brake light) and number plate light don't work, they both share the same supply but i cant trace the problem back, any ideas?

And secondly the power-valve servo has stopped resetting itself when the ignition is turned on, I tested the main plug to it (4 wires), two of which had power (3-4v max) but it still doesn't reset or work when running, again suggestions please!!

any ideas would be greatly appreciated,
many thanks
James

Posted by on

  • James Moon Jul 07, 2010

    the later half of 2007, i.e. the first half is 07 the later half is 57 reg.

    I have set the power valve manually to half open for now but its still not right, its such a pain in the arse!

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  • Yamaha Master
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Hi, James you need a wiring diagram for this scenario you will need your service/owners manual if you can't find the 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.
DT 125 175 Electrical Problems
DT 125 Power valve problems
Yamaha DT125RE 2005 Service Manual
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YAMAHA DT125R Owner Manual

Posted on Jun 06, 2017

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Posted on Jan 02, 2017

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SOURCE: how do i drain the transmission oil on my dt125x

There will be a large bolt on the bottom of the gearbox. Remove the bolt and the oil will drain from that location. Replace the bolt, put in fresh oil then go riding.

Please rate this solution as a FixYa. Thanks!

Posted on Mar 19, 2009

  • 202 Answers

SOURCE: i have a yamaha dt125x sm losing power in 5th and 6th

your clutch disc might be bad.

Posted on Dec 13, 2009

SOURCE: i have a yamaha dt125x sm losing power in 5th and 6th

Mine does the same in 5th and 6th mines a 2006 it just won't hit power valve some times

Posted on Mar 28, 2014

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