HUSTLER TrimStar Hydro WalkBehind Operator's Manual page 27

Do not sharpen to original pattern (below).
It is easier to get a straight cutting edge following
the resharpening pattern shown above.
Figure 4-11
Warped Blade (Replace)
Straight Blade
Comparison of Warped and Straight Blades
Figure 4-12
Cutting Edge
Cutting Plane
Cutting Edge
Straight Blade Edge
End view of blades, comparing
twisted and straighten blades.
Figure 4-13
104893 10/05
Resharpening Pattern
Original Edge
Cutting
Plane
Twisted Blade Edge
(Replace)
Bushing
Bushing
4-7
Height
adjusting
pin
Figure 4-14
Height
adjusting
pin
Figure 4-15