My title may not be what it needs to be. I am solo and small, since I do this part time. I've read a lot on here trying to learn from all the experienced people in the industry. Want to know about blades. When should they be sharpened, changed/replaced. Do you do it your self or what? I have a honda that has the dual blade on it so not sure how to sharpen it. Some of the yards I cut have those weeds that are hard to cut....and my blade hates it.