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Posted on May 10, 2010
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Polaris 500 losing power wont idle - Polaris ATV

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Matthew Albert

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  • Expert 281 Answers
  • Posted on May 16, 2010
Matthew Albert
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Joined: Dec 16, 2008
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If you havint changed the oil when needed or used the wrong oil, then the problum is the cam lobe is gone!! this happened to me.

The two exhaust valves share one lobe on the cam, its common for that lobe to ware down to the point that its not opening the valves,

My lobe was rounded off!!

you have to take off the gas tank, up by the sparkplug is the valve cover take that off and try to start,, if you dont see the valves on bottom moving then its the cam,

new cam = $250

if you do it your self make sure to tie the cam gear to the frame so the timing chain dont skip a touth,

if you find out that it is the cam and need some more tips e-mail me @ [email protected]

3 Related Answers

Anonymous

  • 11 Answers
  • Posted on Jul 09, 2010

SOURCE: 2009 polaris 500 ho losing power in reverse only.

hopefully you just got this machine or never owned a polaris or no one ever explained it to you in reverse you must push the yellow button for full power care full though

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Anonymous

  • 242 Answers
  • Posted on Dec 24, 2009

SOURCE: 1998 polaris sportsman 500 losing power when hot

try head gasket as this is very comen on atvs

Anonymous

  • 200 Answers
  • Posted on Jul 20, 2010

SOURCE: polaris sportsman 500 wont idle

Put a new carb kit in the carb. Thanks you for asking and I hope it helps.Please leave me a 4 thumbs up.

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I HAVE A 97 POLARIS 500 SPORTSMAN. INSTALLED NEW CARBURETOR ,IDLES ROUGH AND WONT REV, BUT BACKFIRES WHEN I TRY.

Hi there,

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