Hope this the right forum. I mow this 25+ acre farm with their Kubota and 4 foot brushcutter. Anyhow the blades are totally blunt now ,they dont appear to be damaged at all (no nicks ,bends etc.)amazing! It still cuts but obviously needs sharpening. I think the brand of the cutter is Pittsburgh or something like that. Its orange. Do I remove the blade assemblies from the spindle like a z-turn and most mowers? or do I remove the blades somehow off the piece the blades are actually attached to? The blades move fairly freely on the ends of a center piece thats attached to the spindle. I guess it cuts almost like a giant weedeater with steel blades instead of monofilament of course. Are all brushcutters like that or similar? Are they going to be a pita to remove? I have been mowing with it for about a year. Everything I know about operating it I have figured out on my own,like the many adjustments for the deck. It was freshly serviced and set up when I first started using it ,so I just try to adjust it by common sense and memory and past experience with normal commercial mowers. I THINK I have it pretty well dialed in. The only thing that has broken since I have been operating it was the fuel filter housing on the tractor. The clear cup like part cracked. Simple fix. Any advice or wisdom on brush mowing would be greatly appreciated. I think I do a fine job with it but I would love to have more knowledge.