Thank YOU, lugnuts!  If it were not for you, I would not have gone inside the engine without replacing the CDI first.

Ahhh another guy burned by cheap Chinese crap.  I too am a victim but when I consider the fact that my 7 year old's cheap POS was only 1/8th of what a similar sized Yamaha was, I'll just throw the thing away and buy another.  We're on our second one in 5 years so financially, I'm still way ahead of the curve.  For little kids that outgrow them anyway, why pay THAT much more?  My son that had the first el cheapo (which inhaled the screw that held the round "butterfly?" on the lever that went through the carb) is now on a Yamaha Warrior 350 and I'm still on my Banshee.

On that note, you have to keep in mind that this is their business model.  They sell you cheap crap and can't back them up with service. I learned my lesson with that first one and the first thing I did was apply some loc-tite where that other one failed when we bought this one. (You might consider doing the same)  Another thing to think about is that these all appear (to me) to be made by essentially the same company anyway.  While they can't readily be serviced (at $50 an hour labor for 10 hours you can just buy a NEW one as opposed to paying somebody to fix it) you CAN buy stuff for them off E-bay.  Just go to E-bay and search "110cc". A new engine only looks to be about $150.00. There's a TON of crap for these things

Hope this helps in some way.

PROBLEM SOLVED!  It was the pick-up coil as suspected.  I found a different vendor, RMSTATOR up in Canada (www.rmstator.com) as opposed to going with www.rickystator.com and I got the following kit...

 http://www.rmstator.com/en/atv/yamaha/yfm_350_warrior/stator/300_watts_stator_assembly_+_gasket_+_spark_plug_yfm_350_warrior_/2002-2004/5530.htm

...which included a replacement Stator and pick-up coil combo, a gasket and a new spark plug for $125.95. Rickystator was $150.00 just for the coil with no gasket or spark plug. (Again, Barney's Yamaha wanted TWICE as much just for the coil).

I installed it today when I got home from work, filled it with oil and it cranked RIGHT up.  In fact, by the way it started and ran today it's quite clear now that perhaps this pick-up coil has been going out for quite some time.  It started much quicker and idles much smoother than it has in a very long time.  I'm thrilled. 

What readings are read between which wires?  Here's what I got..
2002 Warrior 350
FOUR PRONG PLUG:
Pick-up Coil:
White with Green Stripe and White with Red Stripe wires.
Specs: 475-500 ohms
My Reading: OPEN (Way out of spec)

Stator:
White w/blue stripe and Red wires:
Specs: 0-1 Ohm
My Reading: .7 (Within Spec)

STATOR THREE PRONG PLUG
Specs: 0-1 Ohm
My Reading White 1 to White 2: .7 ohms (Within Spec)
My Reading White 1 to White 3: .7 ohms (Within Spec)
My Reading White 2 to White 3: .7 ohms (Within Spec)

So at this point I believe the problem to be the pick-up coil.  A call to Barney's found them to be $259.99 but rickystator.com has them for $150.00.  Can't say I'm surprised.  I'll order the new one and update this thread once it's installed.

I've got a Yamaha Warrior 350 that sat for a few months and it ran fine the last time we rode.  I went to go riding and the battery was weak so I put it on the battery tender over night.  When I went to start it, it did not start.  I've gotten it down to "no spark".  I changed spark plug and the coil out with one from another running quad and still no spark.  Is my next option the CDI unit?  Does anybody have any experience with this or know of a reputable non-Barney's shop or guy-in-his-garage?  Again, nothing of note happened while riding last.  Simply finished riding and shut it off.  Now there's nothing.

Thanks.

I second the MX track(s) question.  Looks like a killer place via GoogleEarth if those tracks were open!

My son's all-stock Warrior 350 is seemingly tired and worn out.  I''m considering a rebuild and I'm wondering if anyone (non-dealership) in the Brandon/Tampa area is capable of doing the work?  Does anybody have any experience with anyone they can suggest?

OK, the course is a new one on me now as well.  Again, we've been riding in Croom (last time was Jan 2007) and we've never been asked for anything other than the titles for our quads.  Are you saying I need to show some Rider Training Certification for Croom now as well?

I can understand trying to prevent bone-headed parents from buying their kids some quads and letting them run loose but I've been riding with all my kids since they were 5.  (13 year old boy, 11 year old girl, 6 year old boy) But THOSE parents are NOT the ones taking their kids to parks!

Regardless, can I get a response from somebody who has been to Croom RECENTLY with their kids for clarification on this stuff?

Thanks all.
Scott

I have a 13 year old son (5'3/150 lbs) who has been riding ATV's and dirtbikes (on private land and Croom) since he was 5.  He now owns a Warrior 350 and Barney's Yamaha told us today that he will not be allowed into Croom anynmore (we have not been in 3 years) because anyone 15 years or younger must be on an ATV of 90cc's or less.  Allegedly, if we show up there, we will be turned away at the gate. REALLY?! Has anyone had any experience with this supposed enforcement at Croom?