Polaris Magnum Polaris magnum 325 4wd not working June 6, 2015 My 4wd doesn’t work when I bought it from the previous owner they gave me parts to supposedly fix it but its for the front differential and I don’t hear a grinding sound so I don’t think that’s the problem what do u guys think it is Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related