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2011 4010 gas Mule -oil in air filter housing

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2011 4010 gas Mule -oil in air filter housing

Old 02-13-2018, 08:13 AM
Weekend Warrior
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Join Date: Apr 2011
Posts: 17
Default 2011 4010 gas Mule -oil in air filter housing

This mule has oil in the air filter housing. I am thinking that maybe there is some type of crankcase ventilation system that is not working correctly? Any ideas? Thanks!
Old 02-13-2018, 08:27 AM
old polaris tech's Avatar
Polaris ATV Expert
Retired and loving it!
Join Date: Jun 2008
Location: North Texas
Posts: 24,352

Most crank case vents lead to the air box so fumes/gasses can be sucked back in and recirculated to keep from emitting fumes to the atmosphere. Kinda of an epa thing which is good.Too much oil in the engine can also cause an excess of oil mist in air boxes,filters. Plus not checking air box/filters often enough can surprise people on amount of accumulated oil.Plus most air boxes have a drain tube or plug for this also.
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