Chain Saws
Greenlee / A Textron Company
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
18
Maintenance
(cont’d)
SHARPENING THE SAW CHAIN
The saw chain must be sharpened to the manufacturer’s
specifications. If the saw chain is not properly sharp-
ened, the risk of kickback increases.
If using a filing guide or hand-held grinder, refer to the
manufacturer’s instructions provided with the unit.
See Illustration
➞
Figure A
Figure B
Figure C
Figure D
Figure E
—
Figure F
—
Model
Number
Chain Part
Number
Pitch
Gauge
Side
Plate
Angle
Top Plate
Cutting
Angle
Top Plate
Filing
Angle
File
Guide
Angle
Depth
Gauge
Setting
Round
File
Size
HCS513
50433709
.325"
.058"
60°
60°
25°
90°
.025°
5/32"
HCS513
50433709
.325"
.058"
60°
60°
25°
90°
.025°
5/32"
HCS516
50482661
.325"
.058"
60°
60°
25°
90°
.025°
5/32"
HCS520
90551893
.325"
.058"
60°
60°
25°
90°
.025°
5/32"
HCS816
50419600
3/8"
.050"
85°
60°
30°
90°
.030°
3/16"
HCS820
90551915
3/8"
.050"
85°
60°
30°
90°
.030°
3/16"
HCS824
90551923
3/8"
.050"
85°
60°
30°
90°
.030°
3/16"
Saw Chain Pitch
See Figure A. Pitch refers to the saw chain measure-
ment. A chain’s pitch is the distance between any three
consecutive rivets divided by two. Example: .65 divided
by two equals .325 pitch.
Figure A – Pitch
This distance divided
by two equals Pitch “A”.
Figure C
Figure D
Side Plate Angle
Top Plate Cutting Angle
“C”
“D”
Saw Chain Gauge
See Figure B. Gauge refers to the thickness of that
portion of the drive link which fits into the guide bar
groove. The guide bar and saw chain gauge must
match. Industry standards are .050, .058 and .063.
Figure B – Gauge
Thickness of bottom section
of drive link equals Gauge “B”.
Figure E
Figure F
Top Plate Filing Angle
Depth Gauge Setting
“E”
“F”
