Toro Reel Mower Basics 09168SL Lawn Mowers

24
Reel Mowers
Attitude and Behind Center
Distance (BCD) of Bedknife
The cutting unit attitude is the angle between the bottom of the bedknife and the surface of the turf under the
cutting unit. As the bedknife attitude is changed, it is important to note that the reel to bedknife shear point
changes relative to the center line of the reel. This is known as the Behind Center Distance (BCD). A change
in the behind center distance can change the after cut appearance of the turf. The result may be better or
worse depending on several factors.
Bedknife attitude is adjusted by changing the height of the front, rear, or both rollers depending on the design
of the cutting unit. A height of cut change is not necessarily part of a change to the bedknife attitude. A large
angle is also referred to as an aggressive bedknife attitude. A small angle is also referred to as a less
aggressive bedknife attitude.
The front or the cutting edge must be lower than the back. This prevents the bedbar from contacting the
ground surface in low heights of cut. It will also prevent streaking or ruffling of the turf after it has been cut
and passed over by the bedbar.
Toro University Technical Training
Product Specification
CategoriesLawn Mower Manual
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