Sharpening The Saw Chain; Ground - Greenlee Fairmont HCS5130CB Operation Manual

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 sharpened,
the risk of kickback increases.
See Illustration ‚
Model Chain Part
Number Number
HPS513CB 50433709
HCS513XCB 50433709
HPS516XCB 50482661
HCS520XCB 90551893
HCS816XCB 50419600
HCS820XCB 90551915
HCS824CB 90551923
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 C
Side Plate Angle
"C"
Greenlee / A Textron Company
Figure A Figure B
Pitch Gauge
.325" .058"
.325" .058"
.325" .058"
.325" .058"
3/8" .050"
3/8" .050"
3/8" .050"
Figure A
Pitch
This distance divided
by two equals Pitch "A".
Figure D
Top Plate Cutting Angle
Chain Saws with Chain Brake
If using a filing guide or hand-held grinder, refer to the
manufacturer's instructions provided with the unit.
Figure C Figure D
Top Plate
Side Plate
Cutting
Angle
Angle
60° 60°
60° 60°
60° 60°
60° 60°
85° 60°
85° 60°
85° 60°
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 E
Top Plate Filing Angle
"D"
"E"
17
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
Figure E — Figure F
Top Plate File
Filing Guide
Angle Angle Setting
25° 90°
25° 90°
25° 90°
25° 90°
30° 90°
30° 90°
30° 90°
Figure B
Gauge
Thickness of bottom section
of drive link equals Gauge "B".
Depth Gauge Setting
—
Depth
Round
Gauge
File Size
.025" 5/32"
.025" 5/32"
.025" 5/32"
.025" 5/32"
.030" 3/16"
.030" 3/16"
.030" 3/16"
Figure F
"F"