Specifications
| Blade Width | |
|---|---|
| Thickness | |
| Blade Length | |
| Center Hole Size | |
| OffSet | |
| Air Lift | |
| Color | |
| Volume | |
| Product UOM | |
| Weight (with Packaging) | |
| Product Height | |
| Product Length | |
| Product Width |
Features
- Requires 3 blades for 60" cut
- Fits many 7 iron decks
- Major brand replacement: John Deere
- Replace OEM No. M128485
Product Details
20-7/8" Lawn Mower Blade (91-078) by Oregon Tool®. You can count on the Oregon™ 91-078 replacement lawn mower blade to be the best in the industry. Oregon Tool 26 quality standards ensure that you're buying a sharp, high-performance blade that mounts properly. It delivers a clean cut for quality results.
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
John Deere: 10332, 10333, 10334, 10335, 10346, 10351, 10357, 10359, 10361, 10384, 10408, 10463, 10464, 10876, 10890, 11775, 11776, 11777, 11778, 11779, 11781, 11782, 11783, 11842, 11843, 11844, 11845, 11846, 11847, 11848, 11849, 11850, 12053, 12156, 12157, 12158, 12159, 12160, 12161, 12225, 1400, 1500, 2520, 2631, 2662, 2667, 2814, 2862, 2863, 4100, 4200, 4400, 4500, 4600, 4700, 495, 595, 600L, 9146, 9280, 9323, 9426, 9477, 9579, 9679, 9681, 9682, 9683, 9684, 9709, 9986, M665, Z-Trac 520, Z-Trac 667, Z-Trac 720, Z-Trac 757, Z-Trac 797, Z-Trac 820, Z-Trac 830, Z-Trac 840, Z-Trac 850, Z-Trac 860, Z-Trac 915
Replacement Guide
J Thomas: DE-881, DE-941, TCU15881
John Deere: M128485, M131958, M133381, M144196, M163983, M168223, TCU15881, TCU18990
Laser: 91668
Mowmore: JD6479
PLP: 7-08550
Rotary: 6479
Stens: 330-591
Sunbelt: B1JD1040