About 1000 miles when I first bought my 521 and drove it from Seaside, OR to Santa Barbara, CA. Lost a lash pad and thought the engine sounded like it was going to die. Lights quit working because of the crappy glass fuse block. Fuel filler hose was disintegrating and dropping small chunks into the tank causing the filter to clog and cut fuel to engine. Barely made it to an auto parts store for a new filter, changed it in the rain. Back was killing me so I drove most of the way with a 32oz nalgene bottle behind the small of my back