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107990
OWNER’S MANUAL
For more information, visit www.desatech.com
FILE HOLDER
WARNING: Unplug chain saw
from power source before servic-
ing. Severe injury or death could
occur from electrical shock or
body contact with moving chain.
WARNING: Cutting edges on
chain are sharp. Use protective
gloves when handling chain.
Figure 19 - File and File Guide Placement On Chain
Note:
This illustration
shows file guide
placement and filing
direction for sharpen-
ing cutters on left side
of chain.
Figure 20 - Chain Part Locations
Right Side of
Chain
Left Side of
Chain
Groove
Groove
Depth Gauge
(left side of chain)
Depth Gauge
(right side
of chain)
Top Plate
(left side of chain)
Top Plate
(right side of chain)
SHARPENING SAW CHAIN
Keep chain sharp. Your saw will cut faster
and more safely. A dull chain will cause
undue sprocket, guide bar, chain, and motor
wear. If you must force chain into wood and
cutting creates only sawdust with few large
chips, chain is dull.
Items Needed to Sharpen Chain
Purchase these items from your local dealer,
hardware store, or chain saw supplies outlet.
• 5/32" round file
• Depth gauge tool
• File guide
•Vise
• Medium sized flat file
Continued
30° Guide
Mark
File
Guide
Filing
Direction
5/32"
Round File
Sharpening Cutters
Use file guide for 30° filing.
1. Adjust chain for proper tension (see Saw
Chain Tension Adjustment, page 7).
2. Clamp guide bar in vise to hold saw
steady.
Note:
Do not clamp chain.
3. Press 5/32" round file (attached to file
guide) into groove between top plate
and depth gauge on chain. File guide
should rest on both top plate and depth
gauge (see Figures 19 and 20).
Note:
File at midpoint of guide bar.
4. Hold file guide level. Make sure 30°
mark on file guide is parallel to center
of guide bar (see Figure 19). This will
insure that you file cutters at 30° angle.
5. File from inside towards outside of cut-
ter until sharp. Only file in this one direc-
tion (see Figure 19).
Note:
Two or three
strokes with file should sharpen cutter.
6. After each cutter is sharpened, move
chain forward to sharpen next cutter.
File all cutters on one side of chain.
7. Move to other side of chain and repeat
process.
CLEANING AND
MAINTENANCE
Continued