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Old 03-07-2011, 02:32 PM
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Smile 2003 500 HO wont start

I started it up to run it and keep the battery charged ! It started right up , rode it for 3 or 4 minutes and it shut off . That was a few weeks ago . Since then I have checked for spark ,changed plug . checked valve timing and spark timing , Plenty of battery and comp. was full of gas ! Whats going on ?? It was always a good running mach. , was running great just before it shut down !
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Old 03-07-2011, 07:25 PM
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Welcome to the board!
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Old 03-07-2011, 10:02 PM
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Always the basics.
Is it getting Spark? (yes)
Is it getting Air?
Is it getting Gas?

Try taking the air filter off and dump a tiny bit of gas in the intake to see if she fires at all.
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Old 03-08-2011, 02:55 AM
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I keep having the same problem with my 700 i let it sit for a week because of bad weather and then it wont start. I charge the battery and then its fine.
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2003 Polaris Sportsman 700 Twin
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2002 Polaris Sportsman X 500 HO(The Workhorse)
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Old 03-26-2011, 04:55 PM
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Once in a while mine does that. Its usually is vaporlocked when hat happens. A
s mentioned earlier, give it a little gas. That is assuming you have already verifed your getting a hot spark.
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Old 03-26-2011, 08:09 PM
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Thanks for the come back guys !! I did it all , first thing I did was starting fluid , NOTHING !! I opened it up , timing chain OK , timing marks OK , checked valve clearance ( .006 ) intake & ex , magnetic pickup clearance to flywheel ,changed plug !
The gas that was in it ( full ) I put in about 2 weeks earlier . I have good spark at the plug when it's against the frame and I crank it , but put the plug in and NOTHING ! Also checked around air intake for air leaks !! The most I got was a small pop out of the muffler !
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Old 03-26-2011, 09:04 PM
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If you used starting fluid with correct timiing and it wouldnt start than you have no spark. Go back to the basics, the problem is probably very simple. I have a fair amount of exp with repairs after all I own a Polaris (only joking, but not really)
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