Rotary Blade Adapter

This adapter is designed as a direct replacement for MTD part number 748-04082. Before purchasing, verify that your current mower requires this specific part number and check that your crankshaft matches the 25 mm shaft size requirement.

The bowtie-shaped center hole is a specific mounting configuration used to lock the blade adapter securely onto the crankshaft. It ensures proper alignment and prevents the blade from slipping or vibrating during operation, which is critical for both cutting performance and safety.

While this part is engineered as a direct replacement for MTD 748-04082, it may fit other brands that utilize the same MTD-manufactured components. Always cross-reference your mower's specific parts manual or the original part number rather than relying on the brand name alone.

You will generally need a socket wrench set to remove the old blade and adapter bolt. Because this part secures the cutting blade, ensure you have a way to safely stabilize the mower blade while loosening or tightening the mounting bolt to prevent it from spinning.

Not necessarily, but you should inspect the adapter closely whenever you change your blade. If you notice any cracks, stripped threads, or if the bowtie hole has become rounded or worn, it should be replaced immediately to ensure the blade stays securely attached to the crankshaft.