Baroness LM180C, Owner'S Operating Manual

Page: 50 / 66

Insert two or three strips of newspaper into
the space between the reel cutter (cutting
cylinder) and the bed knife (bottom blade) at
an angle of 90 degrees, then rotate the reel
cutter (cutting cylinder) counter-clockwise
(when you face the mower unit from the left)
by hand to check the sharpness.
Check the sharpness at entire range (three
or four points from left edge to right one) of
the reel cutter (cutting cylinder).
Using a piece of chalk, mark locations on the
blade that are sharp.
Lower all the mower units to the ground.
Connect the lapping machine and the shaft
of reel cutter (cutting cylinder) with the
socket (opposite side 27).
Turn on the switch of the lapping machine to
rotate the reel cutter (cutting cylinder) in the
direction opposite to the cutting direction.
Apply the abrasive evenly with the brush on
the top side of reel cutter (cutting cylinder)
where the newspaper was cut well or of
chalk-marked locations. (Never apply to
blunt areas.)
Idle the machine for a while, and then switch
off the lapping machine to stop rotation of
the reel cutter (cutting cylinder) when contact
noise is no longer heard.
Wash off or wipe off with cloth etc. the
abrasive from the reel cutter (cutting
cylinder), then check it for sharpness.
Repeat steps 4 to 12 until the entire range
(three or four points) of the reel cutter
(cutting cylinder) will be uniformly
sharpened.
Finally, apply the abrasive on the entire
blade width of the reel cutter (cutting
cylinder) and perform final back lapping.
Stop the rotation of the reel cutter (cutting
cylinder), and then carefully and thoroughly
wash off any remaining abrasive.
While checking the blade for sharpness,
adjust blade engagement. 4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Sharpening of Reel Cutter (Cutting
Cylinder)
Caution
Both the reel cutter (cutting cylinder) and the
bed knife (bottom blade) are edged tools.
Handle them carefully, since they could cut
your hands and feet.
Caution
Wear gloves when touching edged tools to
avoid cutting your hands.
The sharpening of the reel cutter (cutting
cylinder) consists in maintaining its roundness
and creating a relief (second edge face).
This work should be performed if the
sharpness cannot be restored, even after back
lapping, or if the relief (second edge face) has
worn away.
Sharpen the reel cutter (cutting cylinder) when
the sharpness cannot be restored, even after
back lapping, or when the relief (second edge
face) has worn away, there is full contact or
back lapping takes too much time.
In addition, if the reel cutter (cutting cylinder)
becomes worn and its shape conical, perform
cylindrical grinding to return it to a cylindrical
shape.
For sharpening the reel cutter (cutting
cylinder), contact your dealer or Baroness.
If the outer diameter of the reel cutter (cutting
cylinder) after sharpening is more than the
usage limit, the reel cutter (cutting cylinder) can
be sharpened.
New Usage limit
Dimension A
(Outer
diameter of
reel cutter
(cutting
cylinder))
Dimension B
(Distance
from blade
edge to
outer edge
of reel cutter
(cutting
cylinder)
shaft)
Dimension A
(Outer
diameter of
reel cutter
(cutting
cylinder))
Dimension B
(Distance
from blade
edge to
outer edge
of reel cutter
(cutting
cylinder)
shaft)
163 mm
(6.42 in) 68.8 mm
(2.71 in) 143 mm
(5.63 in) 58.8 mm
(2.31 in)
LM180C
Maintenance
Page 5-10
Maintenance Work