HELP! Hub seized to axle

Hey guys, I’m new to the forum. What I got is a 2001 Yamaha Bear Tracker 250, got it as a project on trade and the problem I’m dealing with is a “no spark” problem and been trying to hunt down the cause for two weeks. I’ve replaced the stator, pick up coil, CDI, wiring harness, ignition, coil pack, spark plug, solenoid, battery, etc. and I’m still not getting any luck. Even tried bypassing the kill switch. I also noticed two things on this quad, another CDI under the back plastic by the voltage regulator, and a blue and green wire coming from the motor behind  the foot shift, tried to hook it up but it broke off and I’m thinking the broken wire would cause it to have no spark, if not then I need someone’s help on this and wanna see if I can get spark again. If anyone knows why I have this problem, the help would be greatly appreciated.

Hi!
I got my KLF300 running again with your help a couple of months ago, at that time it was the ignition coil that had failed. It has been in use since then without issues until two weeks ago.
When the new issue showed I was going at about 10km/h and it suddenly slowed to a halt. I started it again after that with choke and I drove it 400 meters and parked. Next time it was really hard to start, and since it was low on gas I thought that was the problem. It didn't get any better with a full tank, so I assumed it was the cold weather, and adjusted the pilot slightly.
After that it I actually got it started again with full choke and some slight gas, I drove about 300 meters and then it slowed down to a halt again. After that, it hasn't started again.
The compression is 165psi. The spark has good intensity, the ATV has functioned before with the same spark "intensity"/light. I *assume* that it has gas as well, there is definitely gas on the spark plug when I remove it
I have checked the carburetor slightly, the float works, diaphragm looks ok, but I haven't disassembled it to really look for dust and such in all the small places.
My theory right now is that it might've been some dust in the gas tank that went into the system, it's just a theory
I'm thankful for all the help and pointers I can get, don't hesitate

/ Pär, Sweden

I am looking for what you would consider the best ATV winch for under $125.  Thanks in advance.

The gas in the tank was bad so I drained it and put new fuel in. It still wouldn't run so I took the carb out and cleaned it. Re-installed the carb and now it will only start and run under full throttle. It also runs rough like this. The engine stops running once I back out to 1/4 throttle. What the heck is going on?

Hey all got a Kawasaki 300 that's seen better days I'm looking to get running.  But first, I'm working on a Honda 350 ES and mainly needing where are you all finding quality parts at good prices.  Atvs are really hot items around here right now and most of the folks wanting and needing them are not familiar with working on them.  I'm looking to find a good resource for information and if it works out well pass this group along to the folks I help to get them in the know how to get the most out of their machines.  Thanks in advance.