Why do the mower blades look like razor blades? What is the blade disc for?

The mower blades are designed for frequent, low-energy mowing. They are intended to maintain your lawn at a specific height rather than doing infrequent, heavy mowing jobs that traditional mower blades would do. They are also easy to replace and are safer to handle than normal mower blades.

Inspect the blades weekly to look for wear. You might need to replace the blades more often if the mower is cutting heavy grass or if it does frequent mowing jobs.

The blade disc is the metal disc mounted to the cutting motor that protects it as well as the cutting blades. When replacing the blades, rotate the disc until the holes align with the blade screws, then use a screwdriver to remove the blade screws.