Baroness GM2810, Service Manual

Page: 140 / 185

Grinding of Rotary Knife
Danger Danger
The rotary knife is an edged tool.
Take extra care in handling since they could
cut your hands or legs.
Danger Danger
If the rotary knife becomes worn or damaged,
a crack or tear between the sail and flat part
will result.
Take extra care since a broken piece of the
rotary knife may fly off while it is rotating.
Warning
Using an imbalanced rotary knife may cause
vibrations, resulting in damage to the
machine.
Caution
When grinding the rotary knife, be sure to
wear safety glasses and gloves.
When the edge of the rotary knife becomes
rounded and no longer cuts well, sharpen the
worn cutting edge with a grinder or sander.
If the edge of the rotary knife becomes
chipped or thin, replace it with a new one.
The criteria for grinding the rotary knife is
described below.
When, after grinding, the width of the rotary
knife to the blade edge is 2/3 or more of the
total width of a new knife
When, after grinding, the blade base of the
rotary knife does not reach the sail
C
B
1
A
A
2
3
4
2tn594-003
Grinding of Rotary Knife_001
1.
2.
1 Total width
2 Blade edge
3 Blade base
4 Sail
A 2/3 or more
B 30 - 40°
C 0.5 - 1.0 mm
When the thinnest part of the rotary knife
has a thickness of 1/3 or more of the
thickness of a new knife
1
1
A
2tn594-004
Grinding of Rotary Knife_002
1 Thickness
A 1/3 or more
3.
GM2810
Operating Machine and Mower Units
Page 7-22
Inspection and repair of each section