Oregon Tool® - 21" Lawn Mower 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
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
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
Ferris: 1000Z, IS2000Z, IS3100Z, IS4500Z, IS5100Z, PCM4818K, PCM6118K, PCM61200, PCT4818B, PCT6118B, PCW6114K, R61R
Gravely: 988159, 988169, 992411, 992600, 992605, 992606, 992607, 992611, 994111, 994112, 994113, 994114, 994115, 994117, 994118
Husqvarna: 2348, 30, 4217, 4819, 4821, 5221, 5223, 5225, 5227, 6123, 6125, 6127, 6130, 6134, 7230
Hustler: 926667, 926675, 926741, 926915, 926923, 926931, 926949, 926980, 927038, 927053, 927111, 927178, 927186, 927327, 927558, 927616, 929497, 929513, 929638, 931949, 931956, 932343US, 932350US, Super Z, X1, Z
Kees: ZKH61121, ZKH61251, ZMKW61231, ZVHO61242, ZVKH61272, ZVKW61252, ZWKH61243, ZWKH61273, ZWKH61303
Lastec: 2261, 2661, 2861, 2961, EF 100 Series
Massey Ferguson: 3900
Snapper: EZF2100DKU, EZF2101DKU, EZF5200M, EZF6100M, MZM2200KH, MZM2300KH, MZM2301KH, NZM19480KWV, NZM19481KWV, NZM19482KWV, NZM19483KWV, NZM21520KWV, NZM21521KWV, NZM21522KWV, NZM21523KWV, NZM25523KWV, NZM25611KWV, NZM25612KWV, NZM25613KWV, NZM27611KH, NZM27612KH, NZM27613KH, NZMJ23521KH, NZMJ23522KH, NZMJ23523KH, NZMJ25611KH, NZMJ25612KH, NZMJ25613KH, NZMXL30614KH, NZMXL32734BV, PL8140KVE, PL8180KE, PMA610, PMA8610, PPU140KO, PPU140KVE, PPU140KW, PPU140R, PPU180KE, SPA361, SPA481, SPA521, SPA611, SPLH140KH, SPLH140KW, SPLH140KWE, SPLH150KH, SPLH153KW, SPLH160BV, SPLH170KW, SPLH173KW, SPLH180KHE, SPLH220KHE, ZF2100DKU, ZF2101DKU, ZF2200K, ZF2300GKU, ZF2301GKU, ZF2500K, ZF2500KH, ZF5200M, ZF6100M, ZM2200K, ZM2200KH, ZM2500KH, ZM2501KH, ZM2502KH, ZMT2500KH

Replacement Guide
Bobcat: 42180B, WM142180B
Dixon: 522829301, 522936601, 539105711, 539109755, 574481301
Ferris: 20842, 20842s, 481712, 5020842, 5020842s, 5101755, 5101755BM, 5101755S, 5101755YP, 5103305S, A48304
Gravely: 79-117, D18036, GDU10232, PC005, PL4207
Great Dane: D18036, GDU10232
Husqvarna: 522829301, 522936601, 539101733, 539102093, 539105711, 539105714
Hustler: 602439, 602439X, 602439Y, 793380, 793380X, 793380Y, 794859, 794859X, 794859Y, 795252, 795252X, 795252Y
John Deere: GDU10232, TCU36515
Kees: 101733
Lastec: 063265, P128, P246, P322
Lesco: 50170, 5070, 60116
Massey Ferguson: 5101755S, 5101755SYP, 5104045SYP
Rotary: 10720
Simplicity: 5022808ASM, 5104045SYP
Snapper: 17081, 5103305S, 5104045SYP, 7017081, 7073396, 7073396YP, 7075770, 7075770BMA, 7075770BZ, 7075770YP, 75770
Stens: 303-060, 303-188
Sunbelt: B1HS1009
Yazoo-Kees: 1-7081, 101733, 17081