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105020
OWNER’S MANUAL
For more information, visit www.desatech.com
F
ILE HO
LD
ER
Normal Guide Bar Maintenance
1. Remove guide bar from chain saw.
2. Remove sawdust from guide bar groove
periodically. Use putty knife or wire.
3. Clean oil slots after each day of use.
4. Remove burrs from sides of guide bar.
Use flat file to make side edges square.
Replace guide bar when
• bar is bent or cracked
• inside groove of bar is badly worn
Note:
When replacing guide bar, see Re-
placement Parts, page 14, for proper bar.
Figure 18 - Guide Bar Maintenance
SHARPENING YOUR SAW
CHAIN
Cleaning Groove
With Putty Knife
Oil Slot
Flat File
Burr
Guide
Bar
30° Guide
Mark
File Guide
4 mm (5/32")
Round File
Note:
This illustration shows file guide place-
ment and filing direction for sharpening cut-
ters on left side of chain.
Filing
Direction
Figure 19 - File and File Guide Placement
On Chain
Figure 20 - Chain Part Locations
CLEANING AND
MAINTENANCE
Continued
Keep chain sharp. Your saw will cut faster
and more safely. A dull chain will cause
undue sprocket, guide bar, chain, and mo-
tor 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.
•4 mm (5/32") round file
• File guide
• Medium sized flat file
•Depth gauge tool
•Vise
Sharpening Cutters
Use file guide for 30° filing.
1. Adjust chain for proper tension (see Saw
Chain Tension Adjustment, page 8).
2. Clamp guide bar in vise to hold saw
steady.
Note:
Do not clamp chain.
3. Press four millimeter (5/32") round file
(attached to file guide) into groove be-
tween 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 if 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.
WARNING: Cutting edges on
chain are sharp. Use protective
gloves when handling chain.
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.
Top Plate
(left side
of chain)
Groove
Depth Gauge
(left side
of chain)
Groove
Depth Gauge
(right side
of chain)
Top Plate
(right side
of chain)
Left Side
of Chain
Right Side
of Chain
Continued