What is missing in the "solutions" is the fact that you need to raise the bar with the guides on it that is part of the trimmer. Depending upon how you removed the existing blade, the bar may be flat against the trimmer. Take a flat head screwdriver and raise that guide. Slide the new blade on and line up the slot at the cutting edge of the blade. The whole problem is that the guide is likely flat which makes it impossible to install the new blade. VERY POOR directions from Oster.
You have to have it on when you do this. You put your thumb right near Where the big "O" is and push it out. They will not cut you as long as the blades are intact and never been dropped. Then the head will swing out. You will see a area where the next side head will slide right on, then close it. You should always keep your blades well oiled also. Good Luck!
Answers & Comments
What is missing in the "solutions" is the fact that you need to raise the bar with the guides on it that is part of the trimmer. Depending upon how you removed the existing blade, the bar may be flat against the trimmer. Take a flat head screwdriver and raise that guide. Slide the new blade on and line up the slot at the cutting edge of the blade. The whole problem is that the guide is likely flat which makes it impossible to install the new blade. VERY POOR directions from Oster.
You have to have it on when you do this. You put your thumb right near Where the big "O" is and push it out. They will not cut you as long as the blades are intact and never been dropped. Then the head will swing out. You will see a area where the next side head will slide right on, then close it. You should always keep your blades well oiled also. Good Luck!