Just replaced the cutter ASY on my AH231 Mine was dull and bent up from loaning it out one time awhile back and I think they thought it was a chain saw. Never will loan it again, I knew better but I went against my own rule and paid for it. lol I forgot how nice this hedger was, zipped through my box woods like a hot knife on butter. As we all know in this business, good hedgers aren't cheap. I'm glad I ordered the cutter ASY and it was easy to swap out. It even sounds completely different now. If yours is dull or bent I urge you to replace your cutter asy and save yourself some $$$. I ordered mine at "Pats small engine". First time I ordered from them, they have $7.95 flat rate shipping so I ordered 4 spindle asy also. They had the lowest prices I have seen anywhere online and they offer OEM or aftermarket parts. I'm defiantly a satisfied customer and will most certainly use them again.