Polaris Storm 800 oil line question

I have a storm 800 I have been putting together the last few week. while running the oil lines tonight I noticed that I am unable to blow through the fittings on the intake for the oil lines, I took them off and the banjo bolts are clear, the fitting itself seems to have a check ball of somesort in it, I cannot see how oil will make it into the intake if I cannot blow through the fitting. They are at the end of the lines in this listing


http://ift.tt/2DsDTin 0177948870

Polaris Storm 800 oil line question