I just bought a 2006 Scag Walk Behind belt drive. It only has about 30 hours on it and looks like new. They guy I bought it from had never done any maintenance to it yet because of the little use it got. I have done all the routine maintenace on it but when I greased the rear wheels no grease ever came out of the hub. I mean I pumped my "large" grease gun at least 40 times on each of the rear wheels and nothing on the inside or outside of the wheel hub. How dry could these things be? How much grease do they hold? Am I going to blow a seal or something if I put any more grease in there? With any other WB I had in the past the grease would come out the outside of the hub and that was how I knew it was full. What do you all think?