On a project I'm not familiar with I usually take lots of pictures. I always think I'll remember what goes where, until I actually start putting stuff together. I like to clean everything. Good cleaner is Purple Cleaner, hard on skin but not solvent based, washes off with water. Take a bolt out, put it back in the old block when possible until you actually need it. One nice thing, these engines are pretty simple. Hardest part might be getting the blade adapter off. Have you actually checked that the crank is bent and not the blade or adapter bent?