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View Poll Results: Poll: For the 850 engine, have you ever had oil in your airbox?
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2009 850 - Yes
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22 |
10.19% |
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2009 850 - No
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13 |
6.02% |
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2010 850 - Yes
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39 |
18.06% |
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2010 850 - No
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18 |
8.33% |
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2011 850 - Yes
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88 |
40.74% |
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2011 850 - No
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29 |
13.43% |
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2012 850 - Yes
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2 |
0.93% |
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2012 850 - No
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5 |
2.31% |
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2013 850 - Yes
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0 |
0% |
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2013 850 - No
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0 |
0% |
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03-15-2011, 09:25 PM
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Extreme ATV Enthusiast
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Member #6542
Join Date: Aug 2010
Location: North Virginia
Posts: 478
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Polaris Tech Tip: Oil in Airbox Fix
2009 - 2011 SPORTSMAN XP 850 Tech Tip.
The fix in the Polaris Tech Tip is the same as the one developed by Supercoe with one exception. Use grease on the bottom O ring (number 5 in Supercoe's pic) to help it slide into the labyrinth hole (number 8 in Supercoe's pic). Supercoe, please add your picture to this thread so we have everything in one place.
So just coat the O ring with a little grease to help it slide better and follow Supercoe's solution of gently twisting the Rocker Cover Breather assembly down. Twist it in before bolting it in place.
I see two O rings in the diagram and I would probably grease them both.
If you do this fix and you still get oil in the airbox, it may be because the labyrinth was bent during the initial install or the Rocker Cover Breather is still not in the labyrinth hole correctly. This can be seen by leaving the Rocker Cover Breather assembly on the Rocker Cover, removing the Rocker Cover and then looking at the labyrinth to see if it is pushed away from the side of the Rocker Cover. I don't know how resilient the labyrinth is.
The torque spec for the two Rocker Cover Breather assembly bolts is 15.5 foot pounds.
See the service manual for Rocker Cover bolts torque specs if you need those.
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2010 Polaris 850 XP, Warn XP-30 Winch, KFI Winch Mount, Steel Front & Rear Rack Extenders
My neighbor called the cops because I was playing Radar Love too loud.... they arrested him.
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Last edited by Stealthepooty; 03-17-2011 at 12:29 AM.
Reason: Technical Correction
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03-16-2011, 05:58 AM
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ATV Enthusiast
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Member #12522
Join Date: Mar 2011
Location: PA and TX
Posts: 46
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 So, who requested you to remove a fix for this problem? And why?
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03-16-2011, 08:54 AM
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Extreme ATV Enthusiast
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Member #6542
Join Date: Aug 2010
Location: North Virginia
Posts: 478
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Quote:
Originally Posted by brazosboy
So, who requested you to remove a fix for this problem? And why? |
Technical Revision. Sorry for the delay.
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_______________________
2010 Polaris 850 XP, Warn XP-30 Winch, KFI Winch Mount, Steel Front & Rear Rack Extenders
My neighbor called the cops because I was playing Radar Love too loud.... they arrested him.
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03-16-2011, 09:00 AM
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Extreme ATV Enthusiast
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Member #12480
Join Date: Feb 2011
Location: Walker, MN
Posts: 206
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Link to my original thread:
Just ordered a 2011 850 X2 LE :)
Pictures after my first ride on a new 2011 850 X2:
Video explanation:
Micro fiche explanation of the steps:
Last edited by supercoe; 03-16-2011 at 09:41 AM.
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03-16-2011, 09:57 AM
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Extreme ATV Enthusiast
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Member #6542
Join Date: Aug 2010
Location: North Virginia
Posts: 478
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Congrats to Supercoe for figuring out the fix and providing the solution to the community before the factory.
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_______________________
2010 Polaris 850 XP, Warn XP-30 Winch, KFI Winch Mount, Steel Front & Rear Rack Extenders
My neighbor called the cops because I was playing Radar Love too loud.... they arrested him.
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03-16-2011, 10:03 AM
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Super Moderator
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Member #230
Join Date: Feb 2009
Location: The UP of Michigan
Posts: 5,566
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I will add that polaris did just recently release a "Team Tip" to all the dealers that describes how to fix this problem in just this way. I find it awesome that Supercoe figured it out first, on his own.
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03-16-2011, 10:06 AM
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Extreme ATV Enthusiast
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Member #12480
Join Date: Feb 2011
Location: Walker, MN
Posts: 206
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Thanks for the compliment but let's see if this works for someone else besides me before getting to excited. 
If anyone has tried this solution please post your results of it working/not working/helping/etc...
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03-16-2011, 10:26 AM
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ATV Enthusiast
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Member #12522
Join Date: Mar 2011
Location: PA and TX
Posts: 46
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Thank you, I'll do mine ASAP.
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03-16-2011, 12:54 PM
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Extreme ATV Enthusiast
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Member #12591
Join Date: Mar 2011
Location: Launceston Tasmania Australia
Posts: 133
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I think your fix will work just fine for anyone so long as the labyrinth plate hasn't been damaged by excess pressure, I suspect mine has had this done pre-delivery as the breather screws appear to have been undone and there was a dribble of oil on the cover assembly screw so my dealer may be aware of it, I will ask them when I take it in for the 1st service. Is there a source somewhere out there of tech tips and service bulletins from Polaris?
Best Regards - MM 
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It's Trail Time!!! 
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03-16-2011, 01:03 PM
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Polaris ATV Junkie!
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Member #5254
Join Date: Jun 2010
Location: Innisfil Ontario, Canada
Posts: 1,017
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Hopefully this cures it.
Is this an issue with the 850 only?? How about the 550??
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Thanks,
Will
2004 GMC 1500CC Z71.
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