Baroness LM281, Owner'S Operating Manual

Page: 73 / 92

Mower unit #3
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Lubricating Points_005
Maintenance Work
Back Lapping
Back lapping is work similar to sharpening a
cooking knife. If the edges of the reel cutter
(cutting cylinder) and the bed knife (bottom
blade) become blunt and make cutting difficult,
both the reel cutter (cutting cylinder) and the
bed knife (bottom blade) should be
simultaneously sharpened by reversing the reel
cutter (cutting cylinder) with an abrasive paste
applied.
However, back lapping is a temporary measure
and would not restore the sharpness
completely.
If the edges of the reel cutter (cutting cylinder)
and the bed knife (bottom blade) become blunt
and make cutting difficult, follow the steps
below to perform back lapping.
Warning
During back lapping, the reel cutter (cutting
cylinder) rotates.
Keep hands and feet away from moving parts.
Caution
Be careful not to inhale exhaust gas during
back lapping.
Caution
Do not perform back lapping with any other
persons.
Have the following items ready: Strips of
newspaper, Abrasive [Back lapping powder
mixed with oil; or gel compound (Baroness
genuine abrasive)], Brush. 1.
1 2 3 4
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Back Lapping_001
1 Newspaper
2 Back lapping powder
3 Gel compound
4 Brush
Note:
The mixing ratio for the abrasive, in volume,
is one part back lapping powder (#150 -
#200) to three or four parts oil.
Caution
When handling the reel cutter (cutting
cylinder) or bed knife (bottom blade), wear
gloves to protect your hands.
Pay attention not to let the reel cutter (cutting
cylinder) catch your gloves. Otherwise, you
may injure your hand or fingers.
Caution
Before adjusting the blade engagement, be
sure to set the reel rotation/stop switching
lever for the reel motor (attached to the mower
unit) to the "Stop" position.
Important
For checking the sharpness of the blade,
adjust the blade engagement after cutting
grass.
Stop the engine. 2.
Maintenance
LM281
Maintenance
Page 5-11
Maintenance Work