Lawn Mower Blade Details

Blade Width: Measure Near the Center of the Blade

Thickness: Measure Near the Center of the Blade

Blade Length: Measured Diagonally From the Corners of the Blade

Center Hole Size: Many Blades will Have a Round Hole in the Center of the Blade and You Will Need to Know its Diameter. Blade Length 5 or 7 Point Star Center Holes May be 5 or 7 Point Star Shaped. 5 Point Star on Blade 7 Point Star on Blade Square or Rectangular The MTD Built Blades on Many Walk Behind Lawn Mowers Have a 'Bow-Tie' Hole. In this Case the Oregon Replacement Blade Will Have a Rectangular center hole which will fit on the bow-tie pattern on the blade adapter. Square or Rectangular Hole on MTD Blades The MTD® Built Blades (Bolens, Cub Cadet, Troy-bilt, White, Yard Machine, and Yardman) May Have a 6 Point Star. Oregon Replacement Blades Will Have a 'Y' Shaped Center Hole Which Will Fit Exactly On the 6 Point Star on the Blade Spindle. 6 Point Star for MTD Blades The Two Sizes of the 6 Point Star. If Your Blade Spindle Has a Bolt and Lock Washer that Holds the Blade to the Machine You Would Use the 11/16" Star or 'Y' Blade. Blade Spindle With Bolt andLlock Washer. If Your Blade is Secured With a Large Flange Nut Then You Would Use the 5/8" Star or 'Y' Blade. Bblade Spindle With Large Flange Nut.

OffSet: (Sometimes Referred to as Offset): If You Set the Blade on a Table This is the Distance The Center of the Blade is Above the Table Top (if any) When the Cutting Edges are Flat on The Table.

Air Lift: Air Lift is the Distance the Lift Panel Rises Above the Cutting Edge.