20 Most Recent Polaris 2008 Sportsman 500 H.O Questions & Answers


Check your fuel system components and make sure theres no dirt in there anywhere

Polaris 2008... | Answered on May 06, 2019


  • Check the attached links,Manuals and guides, Good luck with your ATV
    "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
ATV Service and Repair Manuals
ATV Motorcycle Repair Manuals Repair Manuals Online
http://www.atv-forum.com/general-atv-discussion/706-atv-troubleshooting-guide.html
How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc

Polaris 2008... | Answered on Apr 10, 2019


Hi Tom:
Sounds like a challenge.
I'd probably check the ignition system if I thought the fuel supply was working properly.
Replace spark plugs - test run
If there is a manual hi speed adjust screw on the carb, have you tried adjusting it at high RPM?
reply as a comment to this post and I'll try to help.

Polaris 2008... | Answered on Jun 17, 2016


  • Check the attached links,Manuals and guides, Good luck with your ATV
    "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
ATV Service and Repair Manuals
ATV Motorcycle Repair Manuals Repair Manuals Online
How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc

Polaris 2008... | Answered on Mar 15, 2016


Check the attached links,Manuals and guides, Good luck with your ATV
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

ATV Service and Repair Manuals
ATV Motorcycle Repair Manuals Repair Manuals Online
http://www.atv-forum.com/general-atv-discussion/706-atv-troubleshooting-guide.html
How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc

Polaris 2008... | Answered on Mar 15, 2016


Check the attached links,Manuals and guides, Good luck with your ATV
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

ATV Service and Repair Manuals
ATV Motorcycle Repair Manuals Repair Manuals Online
How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc
http://www.atv-forum.com/general-atv-discussion/706-atv-troubleshooting-guide.html

Polaris 2008... | Answered on Mar 15, 2016


Jim, you need a manual,Check the attached links,Manuals and guides, Good luck with your ATV
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

ATV Service and Repair Manuals
ATV Motorcycle Repair Manuals Repair Manuals Online
http://www.atv-forum.com/general-atv-discussion/706-atv-troubleshooting-guide.html
How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc

Polaris 2008... | Answered on Mar 15, 2016


Could be worn clutch.

Polaris 2008... | Answered on Feb 10, 2016


There is a bunch of things including, Hole in float, Dirty gas has left deposits on the needle and doesn't allow a complete shutoff, A damaged needle or seat, If carburetor has been taken off the float setting could be off, gas breaking down leaving a deposit on the needle or seat. Usually can be cured with a good cleaning and a new needle and seat. Check float to be sure it doesn't have a hole in it. If using 10% ETHANOL. fuel the fuel can be damaging your carburetor. I have had it eat a hole in the bottom of one of my carburetors so it does happen. I do not use ethanol fuel in any of my 4x4's anymore. May be more but good cleaning is needed.

Polaris 2008... | Answered on Mar 14, 2015


check your timing advance. It may be advanced a little too much. If that is okay, then make sure your spark plug is the proper one and not a sub. Most ATV's use DENSO plugs and these seem to work the best. (Having a spark with a higher heat range will cause the overheat condition). The other thing is your mixture... you may be running a tad rich.. lean it up 1/8 of a turn. Finally, remove the exhaust pipe and see if they is carbon build-up at the exhaust port... lean it over and remove all you can, careful not to allow any to fall into the engine. (Blocking the exhaust will cause a dramatic temperature increase.)

Polaris 2008... | Answered on Mar 07, 2015


51 is a injector on #1 cylinder is stuck open.. will need to check wireing for damage first. 52 is cooling system fan issue.. fan is overload condition or maybe shorted to ground. Will likely have to chase wires to find issue.

Polaris 2008... | Answered on Dec 09, 2014


Sounds like a carb issue...make sure you have fresh ,clean gas.You havent got water in your carb/tank have you? I would start by taking the carb apart and give it a really good clean.Check all jets and orifices.Another words,take apart anything in the carb that you can,clean and replace.

Polaris 2008... | Answered on Oct 15, 2014


water in gas or bad gas. fuel filter replace. check plug too prolly fouled or worn out.

Polaris 2008... | Answered on Jul 22, 2014


you might have a dirty carb.check the big jet in there as it might have a blockage.sounds like you have enough gas going through the small jet to start the quad and for slow speed but when you want to give it good power, it starts to bog down.do the carb thing first

Polaris 2008... | Answered on Jul 18, 2014


If the shocks are worn out, get off the machine and lift up on the back rack. This takes up the slop between the shifter box and the transmission, and usually allows me to shift. I also had an issue with the thin steel plate behind the shifter box. Got a crack in the top , so it was flexing, creating more slop. Welded it shut, good as new.

Polaris ATVs | Answered on Mar 17, 2015


isnt that a 2 stroke? go to polaris for an owners manual

Polaris ATVs | Answered on Feb 08, 2015


Sounds like a bad regulator.

Polaris ATVs | Answered on Sep 29, 2014

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