Oregon Tool® 96-607 - Gator™ G3™ 21-11/16" Blade

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
Outer Hole Diameter - This is the diameter of any holes to the sides of the center hole.
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 blade7 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 blade 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 and lock washer. If your blade is secured with a large flange nut then you would use the 5/8" star or 'Y' blade. blade spindle with large flange nut
Center-to-Center - If there are outer holes; this is the distance between the centers of those outer holes.
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.

Fit Guide
Lawn-Boy: 10654, 10655, 10656
Toro: 20001, 20003, 20005, 20007, 20008, 20009, 20012, 20013, 20014, 20016, 20017, 20018, 20019, 20031, 20041, 20047, 20049, 20051, 20064, 20065, 20066, 20067, 20068, 20069, 20070, 20071, 20071A, 20072, 20072A, 20073, 20073A, 20074, 20074A, 20075, 20076, 20076A, 20079, 20086, 20087, 20089, 20094, 20096, 20098, 20110, 20111, 20112, 20113, 20330, 20330C, 20331, 20331C, 20332, 20332C, 20333, 20333C, 20334, 20334C, 20338, 20350, 20351, 20352, 20355, 20370, 20371, 20377, 20655, 20656

Replacement Guide
Arnold: 490-100-0065, 490-100-0102
Lawn-Boy: 131-4547-03
MTD: 742-04135-4045
Rotary: 12649
Stens: 302-462
Toro: 104-8697, 104-8697-03, 104-8697-03P, 108-9764, 108-9764-03, 108-9764-03P, 131-4546-03, 131-4547-03, 59534, 59534P