Mower blades for b1750 with RC60B deck

[AndyC15]

Does anyone happen to which part number I need for the Oregon g6 gator blades for this mower? Book says 20.6 inches or 523mm blades. Oregon has 396-810 which is 20 1/2” or the 396-787 that’s 20 9/16”. I tried to measure my old blades but they are pretty shot and rounded on the edges but kind of appear to be 20 1/2, but with the wear I’m not sure.

 

[bird dogger]

Does anyone happen to which part number I need for the Oregon g6 gator blades for this mower? Book says 20.6 inches or 523mm blades. Oregon has 396-810 which is 20 1/2” or the 396-787 that’s 20 9/16”. I tried to measure my old blades but they are pretty shot and rounded on the edges but kind of appear to be 20 1/2, but with the wear I’m not sure.

If the book says 20.6 inches: 20 9/16" equals 20.625 inches. My guess is that's the exact match. I doubt the extra .025" would cause any problems. Thus the 396-787 should work.