Wont start or stay running unless battery charger is on it

https://www.youtube.com/watch?v=b95hA1t7eo8

It sounds as though your ignition switch is not hooked up correctly. Follow the harness from the ignition switch to the bullet connectors under the front body plastic. Make sure the colors all match up.

Odds are your carb needs to be taken apart, cleaned, reassembled and adjusted if needed.

Check the battery terminals for connection. Check the fuse box to see if power is getting to the fuses. Check to see if the starter is getting power from the ignition switch. Make sure the shifter is in N. Move the shifter back and forth while having the key in the start position.

Carb could be dirty, float stuck or choke stuck. Pull plugs, crank engine and see if you are getting raw gas in the cylinder(s). If you don't get gas to the cylinders, you won't start. You also could have a flooded carburetor.

Your Charging system is not working. You may need to replace the alternator. The only reason it runs when you are hooked to a charger is your battery is not holding a charge and the alternator is not producing the electricity needed to fire the spark plugs. When you hook up to charger, you now have the voltage necessary to fire the spark plugs.

if your four wheeler is back firing you may have water in your gas or your gap on the plug

get a polaris battery or the largest possible battery to fit battery compartment or re locate battery box and install a lawn tractor battery

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