OPERATING INSTRUCTIONS
WHEN TO SHARPEN THE BEDKNIFE
When the grass is not being cut cleanly, or the cut
ends of the grass appear torn or ragged, the edges
of the reel blade and bedknife have become rounded
and need sharpening. See FIG. 1A. The purpose of
sharpening is to restore the sharp edges to the reel
and bedknife.
IMPORTANT: To fully sharpen a reel mower, you
need to grind the reel blades (using a Reel Grinder)
and reshape the cutting edge of the bedknife.
NOTE: New bedknives should be ground before
being put into use. New bedknives deform and move
to match the shape of the bedbar at the time of
installation and therefore MUST be ground to a
straight surface after installation.
BEDKNIFE GRINDING ANGLES
The bedknife has two faces that normally need to be
ground, the top face and the front face (on some
models, the front face may be curved and may not
need grinding).
The proper grinding angles for the two faces will vary
depending on the model. Always follow the
manufacturer's recommended specifications
for bedknife angles.
Typical Bedknife angles:
There will be a +4 to -10 degrees clearance
angle ground on the top face. The angle is
usually measured relative to the bedknife
mounting surface. See FIG. 2A.
There will be a 0-30 degrees clearance angle
ground on the front face. The angle is
usually measured relative to a line
perpendicular to the bedknife mounting
surface. See FIG. 2B.
11
+4 TO - 10
O O
o
O
0 - 30
FIG. 1
FIG. 2