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polaris predator 90 what would cause it to jump ahead slightly while idleing

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Old Sep 5, 2009 | 08:56 PM
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Default polaris predator 90 what would cause it to jump ahead slightly while idleing

my daughters quad jumps ahead slightly its like it doesnt quite kick down all the way carb is cleaned and adjusted but still lurches ahead sometimes it kicks down but not always any solutions?
 
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Old Sep 6, 2009 | 07:16 AM
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"it doesnt quite kick down all the way "
You mean it doesn't idle down correctly?
If so, maybe a crank seal.
When is the last time you serviced the clutchs?
 
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Old Sep 6, 2009 | 07:44 AM
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Clutches would have been my first guess too.
 
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Old Sep 6, 2009 | 09:01 AM
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i was starting to think that way about clutches but wasnt to sure want a second opinion first thank you guys ill have to try it . you think a crank seal would cause that too. why a crank seal?
 
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Old Sep 6, 2009 | 02:18 PM
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If a seal is leaking, it leans out the fuel causing a higher rpm.
Let us know how the clutchs look please.
 
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Old Sep 7, 2009 | 08:48 AM
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i think ill try to take clutch apart today if i have time if not it wont be for a week i work on the road gone for week at a time but ill get back to ya when i can. my girls want that new polaris razor i think ill get them one next spring any body hear anything about them . my daughter took one for a test drive and did alright and bonus they have reverse. looks like a barbie jeep on steroids lol
 
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Old Sep 8, 2009 | 09:04 AM
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There is a centrifugal clutch that is speed sensitive, either the shoes are coming in contact with the bell due to spring breakage or fatique, or the engine RPM at idle is too high.
Is this a 2 stroke? If turning down the idle screw on the carb doesn't fix it, check that the throttle cable isn't out of adjustment and preventing the slide from returning all the way to seat against the throttle screw. Take the boot off the carb so you can see into the bell, see if the slide is seating.
If so then LT80 might be right, air leak causing a lean mixture. Could be a cracked intake manifold, as well.
 
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Old Sep 8, 2009 | 11:52 AM
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"it doesnt quite kick down all the way"
"You mean it doesn't idle down correctly?"

He never did clarify.
Maybe I just didn't understand. LOL
 
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Old Sep 10, 2009 | 05:04 PM
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sorry lt80 didnt know u were askin a question but it seems to idle down but only run 3 seconds then likes to jump ahead than idle agian for 3 seconds and so on i am really leanin towards cluch problems ill let you know when i get it apart thanx.
 
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