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SAFETY OPERATION MAINTENANCESETUP
Sharpening/Replacing the Saw Chain
WARNING! TO PREVENT SERIOUS INJURY: Wear heavy-duty work gloves when handling the Saw Chain.
1. For smooth and safe operation,
always keep the Saw Chain cutters sharp.
2. Have the cutters sharpened by a qualified technician
when you notice any of the following symptoms:
a. The sawdust becomes powder-like.
b. You can’t make the cut without extra force.
c. The Chain Saw does not cut straight.
d. Vibration increases.
3. A Saw Chain that is damaged or too worn to be
restored to a useable condition by sharpening will
need to be replaced. Refer to Guide Bar / Saw
Chain Installation / Replacement on page 10.
WARNING! TO PREVENT SERIOUS
INJURY: Replace the Saw Chain only
with an identical Saw Chain.
Chain Guide Bar Care
1. Remove the Chain Guide Bar
periodically to clean and lubricate.
2. Deburr rails of Guide Bar as needed. Use
a flat file to make side edges square.
3. Remove sawdust and sap from the
Bar Groove using a Guide Bar cleaning
tool (sold separately), then lubricate the
nose sprocket at the ports with grease.
Oil Holes
Groove
Grease Port
Figure S: Cleaning and Lubricating Guide Bar
4. Reverse the Guide Bar when replacing the
Saw Chain to prevent uneven wear. When
doing this, the Bar Support Plate will need to be
remounted to the other side of the Guide Bar.
5. The rails of the Guide Bar groove should
always be parallel to each other. Place a
ruler along the surface of the Guide Bar and
Saw Chain. If there is a gap, the bar is normal.
Straight
Guide Bar
Ruler
Rail
Saw
Chain
Gap
Figure T: Normal Guide Bar
If the ruler is flush with the Guide Bar and
Saw Chain, or the Chain tilts to one side, then
the Bar is worn and needs to be replaced.
Ruler
Worn
Guide Bar
Tilting Saw
Chain
Figure U: Worn Guide Bar