2003 Polaris 600 sportsman four wheeler runs for about 20 minutes and then quits. Let set for a while and then it will restart .

Question moved from Cars and Trucks to model category.

I have two thoughts on this.

You either have water in the electrics from hosing the mud off, especially if you used a power washer.

Or

If mud and water got into the stator and coated the sensor for the CDI. It is magnetic, but in close proximity.

Basically strip and clean and spray WD40 in connectors.

Other ideas here. The ATV forums are a great resource.

https://www.google.com/search?q=2004+polaris+sportsman+600+backfiring

..

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.

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.

Hey Peter,
Sounds like the temperature sensor/fan control has gone bad...

Search Results Page 1 of 2 Clymer Manuals Polaris Sportsman 600 700 800...

Check the Flywheel key. It should be locked under the pull cord, where the stator is located. I will be a small piece of metal that slides into the spline from the engine and the stator. If it is worn the stator will rotate off the spline and the timing will be off, she won't start and if she does will be really rough and backfire, sputter and have power loss.

Sounds like you have some trash in the main jet of your carb. Take the carb off and clean it. That's prob all it is. Hope this helps.

that sounds like your clock. engine codes don't go that high.and if it was your clock you must of lost 12 volt power at some point.

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You can try to adjust the linkage below the shifter should be 2 rods there one is low gear other is forward and backwards if that's doesn't do it then you have to pull trans out and sleeve the shift heads hope you can just adjust it

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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