I have tried two new blades for my 20 inch mower. Both times they cause the mower to be louder and have a slight vibration. When I take them off and put the old blade on, the issues go away. Did something change with the blade or did I just have two unlucky purchases from Amazon?
Yes. Both the old blade and the new blade were installed in the same direction. The old blade is getting a little dull and I don't have much experience sharpening. We have a local place that sharpens but it is only a few dollars cheaper than just getting a new blade. Probably time to just invest in the tools to sharpen the old blade.