2009 Polaris Outlaw 450/525 Service Manual, Page 242Get this manual
6-17 Mounting the oil filter
Fill both oil filter housings 14 full with engine oil and soak new oil filters with engine oilInsert the long oil filter in the front and the short oil filter in the back of the case
Lightly oil the new O-rings for the oil filter cover and mount with cover 3Mount the screws and tighten to Nm
Adding engine oil