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northernmi

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Posts posted by northernmi

  1. Interesting flywheel, it has solid magnet ring pressed into it, no magnet gaps. 

    If this is case, along with what you discovered with stator, that would influence ignition timing @ mid to top end due to 2 magnet gaps? 

    Since there is no physical damage to the old stator frame or mounting area. Guess that rules out a magnet breaking inside, and then WHO ever? re-appoxing the 2 exisiting magnets creating a gap. My guess, incorrect flywheel was installed @ factory or by former owner.

     

     

  2. ETON Multiple Models ATV Service Manuals


    Shop manuals from various ETON ATV models. Includes the following service manuals:

    ETON 2004 VIPER 50-90R & RXL50-70-90

    ETON 2009 VIPER & YUKON YXL-CXL-RXL150cc

    ETON 2011 VIPER SILVER 90R

    ETON 2009 VIPER SILVER 70

    ETON 2009 VECTOR VXL250

    ETON 2000 SIERRA DXL90 

    ETON 2000 LIGHTING 50 & THUNDER 90 

    ETON 2005 VIPER & RX4 4-CYCLE 


     

  3. Frank

    Just 1 last thought, you using an (analog ohm meter) instead of digital 1 for the (pick-up coil and stator & voltage regulator)  Engine Off tests.

    I know on most older and some newer Honda's,  Kaw's, Suzuki's required a non digital meter for these types of test to get good solid reading measurement,

    due to the sensitivity of some of the digital meters.   I'm Hoping the CDI box solves your problem, it will be interesting what your future posts will

    reveal for the fix. Good luck!  

     

    • Like 1
  4. Without a factory service manual in front of me,  I'm just throwing this as an idea to a possible cause? or it could be some other related safety switch inline the ignition circuit harness.

    Just curious if the your quad was equipped with some form of (ETC) Electronic Throttle Control switch, like a Polaris product would be equipped with. Or some form of 1? used by Suzuki. In the advent the throttle cable breaks or becomes stuck  or out of adjustment the ETC kicks in, Grounding the CDI BOX out.  I had this problem before on my 01 trailboss because the cable needed adjusted. normally it should of just killed the engine going from idle into "mid range" throttle. but the switch contacted ground intermittedly (causing backfiring) when it should of just killed the CDI box all together at mid range throttle if adjusted correctly.

    Knowing you already checked the ,  1) In & Ex Valve clearances, 2)Spark Plug resistor cap (Rx Value), 3) Spark plug, even though new? got some out the box that were bad. Flywheel Key half sheared  due to the back firing, Flywheel Magnets (magnetic poles become unstable to be not useable). Even if a ignition coil tested good, seen them also cut-out when accelerated due to a internal crack inside the field windings which you can or cannot see. The Stator plate and alternator windings for shorts?  After the wiring harness being cooked, your lucky to have spark, depending how good of condition the CDI box and pick-up coil in the stator are? after the fire. Finding were the previous owner left off?, is real treat or sometimes a real headache.

     

    • Like 1
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