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Topic: New stator from Yamaha - three bad parts in a row!  (Read 1179 times)

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KLRchickie
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« on: June 25, 2010, 07:55:29 AM »

My XT225 has been down since March with a failed ignition charge coil on the stator.  I have had three bad replacement parts from Yamaha!  The wire to the ignition charge coil which is supposed to have only 20-30 Ohms of resistance to ground has a dead open - on all three!

Has anybody else seen this problem lately, or am I the only one that's needed this part in this time frame?  The tech that looked at the last one felt that the stator assembly was "not up to Yamaha's usual standards".  We're assuming they went to a different supplier & got a whole batch of duds.  Now the stator is unable to even be ordered from Yamaha in their computers, we can only assume that Yamaha is now aware of the problem and has pulled all the parts from the shelf.  I talked to the parts guy again yesterday & he said he's in touch with their Yamaha rep but hasn't gotten any firm answers yet.

An attempt to have the original rewound has resulted in finding out that the wire in the ignition charge coil is ultra fine with several thousand windings.  The guy who can do it would have to charge as much as the new part would cost.  Seems a little steep....

I don't know what I'm really looking for with this post.  A little commiseration maybe?  A good part for my bike popping up out of the blue would be nice - but a little unexpected Lol.
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« on: June 25, 2010, 07:55:29 AM »

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chasemercer
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« Reply #1 on: June 13, 2012, 02:55:11 PM »

I had a similar problem with mine so I ordered a replacement stator from Rick's Motorsport Electrics. Then I found this how to video to help me with the testing and replacement. http://www.ricksmotorsportelectrics.com/how-to-test-a-yamaha-warrior-stator.php
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VTFJR13
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« Reply #2 on: June 23, 2012, 04:53:54 AM »


I had a similar problem with mine so I ordered a replacement stator from Rick's Motorsport Electrics. Then I found this how to video to help me with the testing and replacement. http://www.ricksmotorsportelectrics.com/how-to-test-a-yamaha-warrior-stator.php

The only problem I see with that video is just doing a ohms test is not the best and conclusive way to test the electrical components. I'm a factory Yamaha certified service technician and Yamaha trained us to use the Iginition mate which reads peak voltage. The charging coil and the pulser coil or also known as the pick up coil or trigger coil is best tested with it in the vehicle and cranking the motor then measuring the peak voltage output which is ac current. That will tell you if both coils are really working properly and putting out enough voltage to do there job. The stator windings are also best tested in the bike while runnging and checking the ac output on all three or in some cases just two legs of the stator with stator unplugged. The problem with the ohms test is I have tested many electrical components which ohm tested good but when you do the ac output test or peak voltage test you find the real problem.
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