Four wheeler my Polaris scrambler 500 wont start just backfires

gee is it a
2001 Polaris Scrambler 500 4x4 atv real if yes ask maker for that Polaris.
here
USA site, here, so if not USA change to your secret country

https://atv.polaris.com/en-us/sportsman-xp-1000-s/

5 years standing is a long time. Carburetor float will be stuck. Pull the plugs and see if they are wet and also if you have a spark.

Strip and clean carb and jets.
Check fuel tap and fuel delivery.
Drain any fuel and replace with new.
Replace the spark plug.
No lights is odd. Check if there are fuses?

Manual

https://www.google.com/search?q=2000+polaris+scrambler+500+service+manual+pdf

Parts and Parts Schematics
https://www.polarispartshouse.com/oemparts/l/pol/50343730f870023468a741cc/2000-scrambler-500-a00bg50aa-parts

..

check the distributer an cap

your reverse over ride not working , u need to open switch box see if you have power to the switch when bike is running with a test light then with brake on and in reverse check the output wire to see if you have power out when depressed be sure you have the wheels up in the air when you do this for safety sake

If it is running but backfiring out the carb, I'd be looking at a burned intake valve.
If it's not nunning but backfires out the carb when you try to start it, I'd be looking at bad ignition or valve timing. I'd suggest that you review any recent maintenance to see if that could be the source of the problem.

restricted water flow around the engine flush it out with a hose pipe

some four wheelers require a battery to run correctly. sounds like you need a new one.

1. eHow
2. Car Repair & Maintenance
3. Car Oil Maintenance
4. Drain Car Oil
5. How to Repair a Polaris Four Wheeler

How to Repair a Polaris Four Wheeler By Brianna Byrne, eHow Contributor Spark plug inspection and adjustment can be one way to repair a Polaris ATV.

Almost every vehicle needs regular servicing and repairs in order to continually perform at its best, and Polaris' lineup of four wheelers is no exception. The company has released dozens of ATV makes and models throughout the years, ranging from sporty racing quads to youth models to heavy-duty utility ATVs. Despite the differences between the company's many makes and models, general repair tips and troubleshooting instructions remain consistent for all Polaris four-wheelers. The electrical, ignition and fuel systems are some of the most common sources of Polaris ATV problems.

Read more: How to Repair a Polaris Four Wheeler ' eHow.com http://www.ehow.com/how_8074861_repair-polaris-four-wheeler.html#ixzz26pmQIzeh

my artic cat did this found that the carb was dirty