Sharpening The Saw Chain - Greenlee LRF 75 Manuel D'instructions

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.
See Illustration:
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.
This distance divided
by two equals Pitch "A".
Figure C
Side Plate Angle
"C"
Greenlee Tools, Inc.
Figure A Figure B Figure C
Pitch Gauge
.325" .058"
Figure A
Pitch
Figure D
Top Plate Cutting Angle Top Plate Filing Angle
"D"
Long-Reach Chain Saws (Foam-filled)
If using a filing guide or hand-held grinder, refer to the
manufacturer's instructions provided with the unit.
All Long-Reach Chain Saws are equipped with the
following chain:
Figure D Figure E
Side Top Plate Top Plate
Plate Cutting Filing
Angle Angle Angle
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
File Guide Angle
"E"
19
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
— Figure F
File Depth
Guide Gauge
Angle Setting
30° 10° .025"
Figure B
Gauge
Thickness of bottom section
of drive link equals Gauge "B".
Depth Gauge Setting
10°
—
Round
File
Size
3/16"
Figure F
"F"