
I think the blade on my mower has been upside down since I bought it...
Full disclosure I don't mow my own lawn because of allergies, family takes care of it but it's been having a lot of trouble cutting so I took the blade off to sharpen it and noticed that it was upside down. The cutting surface faced up, the wings faced down but the chevrons that hold it in place will only let it go on in that direction... I asked everybody who uses my lawn mower and no one's ever replaced the blade so it seems to be the one that came with it like 3 years ago. Any clue what's going on here?