Blade Holder 526921001

Uneven cutting or excessive deck vibration may indicate a cracked, distorted, or damaged blade adapter. The holder supports the blade on the motor shaft and maintains alignment during operation. First check that the blade is balanced, the retaining hardware is tight, and the shaft is not bent. Match the replacement to the full mower model because mounting profiles can differ. Disconnect every power source before reaching beneath the deck and handle the blade carefully. Install all washers and spacers in their original order, then verify that the blade sits flat and rotates without interference.