Question about Polaris 2007 Sportsman 450

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No electrical (lights, electric start, 4 wheel drive

We installed a brand new battery and everything was working fine until we turned off the atv. When we tried to start it there was no power. Nothing. No starter, no lights no 4 wheel drive.

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Posted on Jan 02, 2017

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playercardzr
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SOURCE: How do I fix my front wheel drive system on my 2004 ATV 400 Sportsman Late model? After extensive work and parts replacement my all wheel drive is not working.

I have battled with my 4wd, did many of the same parts changes you did. Put it in the garage and was about to tear it all apart, and I brushed against the red kill switch on the left handlebar, and the 4wd icon on the dash lit up, and everything worked! There is a little dead spot in the switch, and if it isn't clicked right in the middle, AWD doesn't work. Once I figured this out, it works great! Hope it's as simple as that for someone else!

Posted on Mar 17, 2015

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1 Answer

Will not crank over to start and nothing electrical works. Just installed a new battery. What can cause this problem? It was working fine when parked 3 weeks ago.


Test the battery with a voltmeter, if good, check connection to battery. Has to have a real good ground.

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Take your battery to O'Reilly's or AutoZone and have the CCA (Cold Cranking Amps) checked..(load test).. this WILL tell you if your battery is good or not.
Just because you have 12 VOLTS doesn't mean it's A GOOD BATTERY..You MUST have amperage to start/run your ATV

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The front end works off 12volts.If you have moisture in your dash your dash may not let your 4 wheel drive work and it could also not let your atv start if it doesn;t every start unplug your dash but your dash has to work to have 4 wheel drive.

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Could be time to replace battery, this is most likely the culprit. These fourwheelers are very picky when it comes to low power. Your starter is also most likely just fine, the clicking you hear is the solenoid on the starter, so your battery has some juice, but not enough amps to turn over the starter. Also If the fourwheeler has sat for a long time then you may just need to charge the battery. The 2007 is most likely fuel inject which uses even more fuel when running and it also has its own computer kind of like a PCM in a car or truck. These all need a good supply of power and the stator which is like an alternator usually needs the help of a fully charged battery to keep everything running properly. Also note, once you get a new battery or charge it in some cases the ATV should run smoother.

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1 Answer

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Hey Randy,
Sounds like the battery needs to be replaced. Take the battery to O'Reilly, Autozone, Advance Auto and have the CCA, (Cold Cranking Amps) checked..(load test).. this will tell you whether the battery is good or not. When you get a new battery.. make sure the connections are clean and tight..put a little heavy grease on the connections to prevent corrosion. This should fix your problem.

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Simply unplug the key switch you might find the electric start works too if not should start by hand of coast start every 4 wheeler I can ever remember always started this way hope that helps good luck

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