HUSTLER FasTrak 36" & 42" Decks none Parts Manual page 89

Do not sharpen to original pattern (below).
It is easier to get a straight cutting edge following
the re sharpening pattern shown above.
333559 09/08
Re sharpening
pattern
Original edge
FIG. 18
Warped Blade (Replace)
Straight Blade (Replace)
Comparison of Warped and Straight Blades
Cutting edge
Cutting Plane
Cutting edge
End view of blades, comparing
twisted and straightened blades
9-19
Cutting
plane
FIG. 19
Twisted Blade Edge
(replace)
Straight Blade Edge
FIG. 20