Polaris Predator 500

So I have a Polaris  predator 500 and everything works on it but not getting spark and no power going to CDI box. Please help 

Does anybody know what the standard adjustment is for the air screw on the carb? How many turns out from full in?
Cheers,
John
 
 

So my front hub broke, I’d like to put aftermarket on. Hard to find new oe ones. Please help. I’m new to all of this, I have some car knowledge and try to apply it

Hello. I got this fourwheeler to fix for my buddy. It wasnt starting at all when I got it so I opened the valve cover up and checked the timing and the timing was way off. I set the timing bolted all back together and it started. It only stays running with very little throttle applied. There is a weird noise coming from the engine and it smells like its burning and also smokes from the headers. I posted a video idk how helpful it will be but I need some advice on the next step. I want to say it's the piston and rings, but I'm not too sure was also thinking something was up with the valves. Thought I would get some advice before trying anything. Thanks!
 
 

Hi there , have a KAZUMA 500 JAGUAR the rear diff is permanently locked , how can I get it out of lock just about tried everything I think, ?? .  Thank you your help is appreciated.